diff --git a/docs/classes/Seam.md b/docs/classes/Seam.md
index f606c63d..09005158 100644
--- a/docs/classes/Seam.md
+++ b/docs/classes/Seam.md
@@ -62,6 +62,7 @@ Routes.constructor
 | `create` | (`params`: [`AccessCodeCreateOngoingRequest`](../interfaces/AccessCodeCreateOngoingRequest.md)) => `Promise`<[`OngoingAccessCode`](../interfaces/OngoingAccessCode.md)\>(`params`: [`AccessCodeCreateScheduledRequest`](../interfaces/AccessCodeCreateScheduledRequest.md)) => `Promise`<[`TimeBoundAccessCode`](../interfaces/TimeBoundAccessCode.md)\> |
 | `delete` | (`params`: [`AccessCodeDeleteRequest`](../modules.md#accesscodedeleterequest)) => `Promise`<`unknown`\> |
 | `list` | (`params`: { `device_id`: `string`  }) => `Promise`<[`AccessCode`](../modules.md#accesscode)[]\> |
+| `update` | (`params`: [`AccessCodeUpdateRequest`](../modules.md#accesscodeupdaterequest)) => `Promise`<[`OngoingAccessCode`](../interfaces/OngoingAccessCode.md) \| [`TimeBoundAccessCode`](../interfaces/TimeBoundAccessCode.md)\> |
 
 #### Inherited from
 
@@ -69,7 +70,7 @@ Routes.accessCodes
 
 #### Defined in
 
-[src/routes.ts:193](https://github.com/seamapi/javascript/blob/main/src/routes.ts#L193)
+[src/routes.ts:196](https://github.com/seamapi/javascript/blob/main/src/routes.ts#L196)
 
 ___
 
@@ -89,7 +90,7 @@ Routes.actionAttempts
 
 #### Defined in
 
-[src/routes.ts:264](https://github.com/seamapi/javascript/blob/main/src/routes.ts#L264)
+[src/routes.ts:260](https://github.com/seamapi/javascript/blob/main/src/routes.ts#L260)
 
 ___
 
@@ -121,7 +122,7 @@ Routes.connectWebviews
 
 #### Defined in
 
-[src/routes.ts:167](https://github.com/seamapi/javascript/blob/main/src/routes.ts#L167)
+[src/routes.ts:170](https://github.com/seamapi/javascript/blob/main/src/routes.ts#L170)
 
 ___
 
@@ -142,7 +143,7 @@ Routes.connectedAccounts
 
 #### Defined in
 
-[src/routes.ts:243](https://github.com/seamapi/javascript/blob/main/src/routes.ts#L243)
+[src/routes.ts:239](https://github.com/seamapi/javascript/blob/main/src/routes.ts#L239)
 
 ___
 
@@ -164,7 +165,7 @@ Routes.devices
 
 #### Defined in
 
-[src/routes.ts:148](https://github.com/seamapi/javascript/blob/main/src/routes.ts#L148)
+[src/routes.ts:151](https://github.com/seamapi/javascript/blob/main/src/routes.ts#L151)
 
 ___
 
@@ -187,7 +188,7 @@ Routes.locks
 
 #### Defined in
 
-[src/routes.ts:113](https://github.com/seamapi/javascript/blob/main/src/routes.ts#L113)
+[src/routes.ts:116](https://github.com/seamapi/javascript/blob/main/src/routes.ts#L116)
 
 ___
 
@@ -209,7 +210,7 @@ Routes.workspaces
 
 #### Defined in
 
-[src/routes.ts:97](https://github.com/seamapi/javascript/blob/main/src/routes.ts#L97)
+[src/routes.ts:100](https://github.com/seamapi/javascript/blob/main/src/routes.ts#L100)
 
 ## Methods
 
diff --git a/docs/interfaces/AccessCodeBase.md b/docs/interfaces/AccessCodeBase.md
index d38d0f41..4b592520 100644
--- a/docs/interfaces/AccessCodeBase.md
+++ b/docs/interfaces/AccessCodeBase.md
@@ -26,7 +26,7 @@
 
 #### Defined in
 
-[src/types/models.ts:133](https://github.com/seamapi/javascript/blob/main/src/types/models.ts#L133)
+[src/types/models.ts:135](https://github.com/seamapi/javascript/blob/main/src/types/models.ts#L135)
 
 ___
 
@@ -36,7 +36,7 @@ ___
 
 #### Defined in
 
-[src/types/models.ts:135](https://github.com/seamapi/javascript/blob/main/src/types/models.ts#L135)
+[src/types/models.ts:137](https://github.com/seamapi/javascript/blob/main/src/types/models.ts#L137)
 
 ___
 
@@ -46,4 +46,4 @@ ___
 
 #### Defined in
 
-[src/types/models.ts:134](https://github.com/seamapi/javascript/blob/main/src/types/models.ts#L134)
+[src/types/models.ts:136](https://github.com/seamapi/javascript/blob/main/src/types/models.ts#L136)
diff --git a/docs/interfaces/AccessCodeCreateBaseRequest.md b/docs/interfaces/AccessCodeCreateBaseRequest.md
index 5bd42442..cc11af74 100644
--- a/docs/interfaces/AccessCodeCreateBaseRequest.md
+++ b/docs/interfaces/AccessCodeCreateBaseRequest.md
@@ -26,7 +26,7 @@
 
 #### Defined in
 
-[src/types/route-requests.ts:16](https://github.com/seamapi/javascript/blob/main/src/types/route-requests.ts#L16)
+[src/types/route-requests.ts:17](https://github.com/seamapi/javascript/blob/main/src/types/route-requests.ts#L17)
 
 ___
 
@@ -36,7 +36,7 @@ ___
 
 #### Defined in
 
-[src/types/route-requests.ts:14](https://github.com/seamapi/javascript/blob/main/src/types/route-requests.ts#L14)
+[src/types/route-requests.ts:15](https://github.com/seamapi/javascript/blob/main/src/types/route-requests.ts#L15)
 
 ___
 
@@ -46,4 +46,4 @@ ___
 
 #### Defined in
 
-[src/types/route-requests.ts:15](https://github.com/seamapi/javascript/blob/main/src/types/route-requests.ts#L15)
+[src/types/route-requests.ts:16](https://github.com/seamapi/javascript/blob/main/src/types/route-requests.ts#L16)
diff --git a/docs/interfaces/AccessCodeCreateOngoingRequest.md b/docs/interfaces/AccessCodeCreateOngoingRequest.md
index 71ace36b..1db71783 100644
--- a/docs/interfaces/AccessCodeCreateOngoingRequest.md
+++ b/docs/interfaces/AccessCodeCreateOngoingRequest.md
@@ -28,7 +28,7 @@
 
 #### Defined in
 
-[src/types/route-requests.ts:16](https://github.com/seamapi/javascript/blob/main/src/types/route-requests.ts#L16)
+[src/types/route-requests.ts:17](https://github.com/seamapi/javascript/blob/main/src/types/route-requests.ts#L17)
 
 ___
 
@@ -42,7 +42,7 @@ ___
 
 #### Defined in
 
-[src/types/route-requests.ts:14](https://github.com/seamapi/javascript/blob/main/src/types/route-requests.ts#L14)
+[src/types/route-requests.ts:15](https://github.com/seamapi/javascript/blob/main/src/types/route-requests.ts#L15)
 
 ___
 
@@ -56,4 +56,4 @@ ___
 
 #### Defined in
 
-[src/types/route-requests.ts:15](https://github.com/seamapi/javascript/blob/main/src/types/route-requests.ts#L15)
+[src/types/route-requests.ts:16](https://github.com/seamapi/javascript/blob/main/src/types/route-requests.ts#L16)
diff --git a/docs/interfaces/AccessCodeCreateScheduledRequest.md b/docs/interfaces/AccessCodeCreateScheduledRequest.md
index 89136896..bb828687 100644
--- a/docs/interfaces/AccessCodeCreateScheduledRequest.md
+++ b/docs/interfaces/AccessCodeCreateScheduledRequest.md
@@ -30,7 +30,7 @@
 
 #### Defined in
 
-[src/types/route-requests.ts:16](https://github.com/seamapi/javascript/blob/main/src/types/route-requests.ts#L16)
+[src/types/route-requests.ts:17](https://github.com/seamapi/javascript/blob/main/src/types/route-requests.ts#L17)
 
 ___
 
@@ -44,7 +44,7 @@ ___
 
 #### Defined in
 
-[src/types/route-requests.ts:14](https://github.com/seamapi/javascript/blob/main/src/types/route-requests.ts#L14)
+[src/types/route-requests.ts:15](https://github.com/seamapi/javascript/blob/main/src/types/route-requests.ts#L15)
 
 ___
 
@@ -54,7 +54,7 @@ ___
 
 #### Defined in
 
-[src/types/route-requests.ts:25](https://github.com/seamapi/javascript/blob/main/src/types/route-requests.ts#L25)
+[src/types/route-requests.ts:26](https://github.com/seamapi/javascript/blob/main/src/types/route-requests.ts#L26)
 
 ___
 
@@ -68,7 +68,7 @@ ___
 
 #### Defined in
 
-[src/types/route-requests.ts:15](https://github.com/seamapi/javascript/blob/main/src/types/route-requests.ts#L15)
+[src/types/route-requests.ts:16](https://github.com/seamapi/javascript/blob/main/src/types/route-requests.ts#L16)
 
 ___
 
@@ -78,4 +78,4 @@ ___
 
 #### Defined in
 
-[src/types/route-requests.ts:24](https://github.com/seamapi/javascript/blob/main/src/types/route-requests.ts#L24)
+[src/types/route-requests.ts:25](https://github.com/seamapi/javascript/blob/main/src/types/route-requests.ts#L25)
diff --git a/docs/interfaces/AccessCodeUpdateBaseRequest.md b/docs/interfaces/AccessCodeUpdateBaseRequest.md
new file mode 100644
index 00000000..c67c2a43
--- /dev/null
+++ b/docs/interfaces/AccessCodeUpdateBaseRequest.md
@@ -0,0 +1,30 @@
+[seamapi](../README.md) / [Exports](../modules.md) / AccessCodeUpdateBaseRequest
+
+# Interface: AccessCodeUpdateBaseRequest
+
+## Table of contents
+
+### Properties
+
+- [access\_code\_id](AccessCodeUpdateBaseRequest.md#access_code_id)
+- [device\_id](AccessCodeUpdateBaseRequest.md#device_id)
+
+## Properties
+
+### access\_code\_id
+
+• **access\_code\_id**: `string`
+
+#### Defined in
+
+[src/types/route-requests.ts:35](https://github.com/seamapi/javascript/blob/main/src/types/route-requests.ts#L35)
+
+___
+
+### device\_id
+
+• `Optional` **device\_id**: `string`
+
+#### Defined in
+
+[src/types/route-requests.ts:34](https://github.com/seamapi/javascript/blob/main/src/types/route-requests.ts#L34)
diff --git a/docs/interfaces/ActionAttemptResultTypeMap.md b/docs/interfaces/ActionAttemptResultTypeMap.md
index 1b559747..8fa5064a 100644
--- a/docs/interfaces/ActionAttemptResultTypeMap.md
+++ b/docs/interfaces/ActionAttemptResultTypeMap.md
@@ -16,6 +16,7 @@
 - [DELETE\_ACCESS\_CODE](ActionAttemptResultTypeMap.md#delete_access_code)
 - [LOCK\_DOOR](ActionAttemptResultTypeMap.md#lock_door)
 - [UNLOCK\_DOOR](ActionAttemptResultTypeMap.md#unlock_door)
+- [UPDATE\_ACCESS\_CODE](ActionAttemptResultTypeMap.md#update_access_code)
 
 ## Properties
 
@@ -35,7 +36,7 @@ Record.CREATE\_ACCESS\_CODE
 
 #### Defined in
 
-[src/types/models.ts:100](https://github.com/seamapi/javascript/blob/main/src/types/models.ts#L100)
+[src/types/models.ts:101](https://github.com/seamapi/javascript/blob/main/src/types/models.ts#L101)
 
 ___
 
@@ -66,3 +67,23 @@ ___
 #### Inherited from
 
 Record.UNLOCK\_DOOR
+
+___
+
+### UPDATE\_ACCESS\_CODE
+
+• **UPDATE\_ACCESS\_CODE**: `Object`
+
+#### Type declaration
+
+| Name | Type |
+| :------ | :------ |
+| `access_code` | [`AccessCode`](../modules.md#accesscode) |
+
+#### Overrides
+
+Record.UPDATE\_ACCESS\_CODE
+
+#### Defined in
+
+[src/types/models.ts:102](https://github.com/seamapi/javascript/blob/main/src/types/models.ts#L102)
diff --git a/docs/interfaces/ActionAttemptWithError.md b/docs/interfaces/ActionAttemptWithError.md
index 84804329..9747ac48 100644
--- a/docs/interfaces/ActionAttemptWithError.md
+++ b/docs/interfaces/ActionAttemptWithError.md
@@ -36,7 +36,7 @@ ActionAttemptBase.action\_attempt\_id
 
 #### Defined in
 
-[src/types/models.ts:74](https://github.com/seamapi/javascript/blob/main/src/types/models.ts#L74)
+[src/types/models.ts:75](https://github.com/seamapi/javascript/blob/main/src/types/models.ts#L75)
 
 ___
 
@@ -50,7 +50,7 @@ ActionAttemptBase.action\_type
 
 #### Defined in
 
-[src/types/models.ts:75](https://github.com/seamapi/javascript/blob/main/src/types/models.ts#L75)
+[src/types/models.ts:76](https://github.com/seamapi/javascript/blob/main/src/types/models.ts#L76)
 
 ___
 
@@ -71,7 +71,7 @@ ActionAttemptBase.error
 
 #### Defined in
 
-[src/types/models.ts:92](https://github.com/seamapi/javascript/blob/main/src/types/models.ts#L92)
+[src/types/models.ts:93](https://github.com/seamapi/javascript/blob/main/src/types/models.ts#L93)
 
 ___
 
@@ -85,7 +85,7 @@ ActionAttemptBase.result
 
 #### Defined in
 
-[src/types/models.ts:91](https://github.com/seamapi/javascript/blob/main/src/types/models.ts#L91)
+[src/types/models.ts:92](https://github.com/seamapi/javascript/blob/main/src/types/models.ts#L92)
 
 ___
 
@@ -99,4 +99,4 @@ ActionAttemptBase.status
 
 #### Defined in
 
-[src/types/models.ts:90](https://github.com/seamapi/javascript/blob/main/src/types/models.ts#L90)
+[src/types/models.ts:91](https://github.com/seamapi/javascript/blob/main/src/types/models.ts#L91)
diff --git a/docs/interfaces/ConnectWebview.md b/docs/interfaces/ConnectWebview.md
index f26036ed..4cb9b81f 100644
--- a/docs/interfaces/ConnectWebview.md
+++ b/docs/interfaces/ConnectWebview.md
@@ -29,7 +29,7 @@
 
 #### Defined in
 
-[src/types/models.ts:120](https://github.com/seamapi/javascript/blob/main/src/types/models.ts#L120)
+[src/types/models.ts:122](https://github.com/seamapi/javascript/blob/main/src/types/models.ts#L122)
 
 ___
 
@@ -39,7 +39,7 @@ ___
 
 #### Defined in
 
-[src/types/models.ts:119](https://github.com/seamapi/javascript/blob/main/src/types/models.ts#L119)
+[src/types/models.ts:121](https://github.com/seamapi/javascript/blob/main/src/types/models.ts#L121)
 
 ___
 
@@ -49,7 +49,7 @@ ___
 
 #### Defined in
 
-[src/types/models.ts:122](https://github.com/seamapi/javascript/blob/main/src/types/models.ts#L122)
+[src/types/models.ts:124](https://github.com/seamapi/javascript/blob/main/src/types/models.ts#L124)
 
 ___
 
@@ -59,7 +59,7 @@ ___
 
 #### Defined in
 
-[src/types/models.ts:121](https://github.com/seamapi/javascript/blob/main/src/types/models.ts#L121)
+[src/types/models.ts:123](https://github.com/seamapi/javascript/blob/main/src/types/models.ts#L123)
 
 ___
 
@@ -69,7 +69,7 @@ ___
 
 #### Defined in
 
-[src/types/models.ts:129](https://github.com/seamapi/javascript/blob/main/src/types/models.ts#L129)
+[src/types/models.ts:131](https://github.com/seamapi/javascript/blob/main/src/types/models.ts#L131)
 
 ___
 
@@ -79,7 +79,7 @@ ___
 
 #### Defined in
 
-[src/types/models.ts:116](https://github.com/seamapi/javascript/blob/main/src/types/models.ts#L116)
+[src/types/models.ts:118](https://github.com/seamapi/javascript/blob/main/src/types/models.ts#L118)
 
 ___
 
@@ -89,7 +89,7 @@ ___
 
 #### Defined in
 
-[src/types/models.ts:126](https://github.com/seamapi/javascript/blob/main/src/types/models.ts#L126)
+[src/types/models.ts:128](https://github.com/seamapi/javascript/blob/main/src/types/models.ts#L128)
 
 ___
 
@@ -99,7 +99,7 @@ ___
 
 #### Defined in
 
-[src/types/models.ts:123](https://github.com/seamapi/javascript/blob/main/src/types/models.ts#L123)
+[src/types/models.ts:125](https://github.com/seamapi/javascript/blob/main/src/types/models.ts#L125)
 
 ___
 
@@ -109,7 +109,7 @@ ___
 
 #### Defined in
 
-[src/types/models.ts:127](https://github.com/seamapi/javascript/blob/main/src/types/models.ts#L127)
+[src/types/models.ts:129](https://github.com/seamapi/javascript/blob/main/src/types/models.ts#L129)
 
 ___
 
@@ -119,7 +119,7 @@ ___
 
 #### Defined in
 
-[src/types/models.ts:118](https://github.com/seamapi/javascript/blob/main/src/types/models.ts#L118)
+[src/types/models.ts:120](https://github.com/seamapi/javascript/blob/main/src/types/models.ts#L120)
 
 ___
 
@@ -129,7 +129,7 @@ ___
 
 #### Defined in
 
-[src/types/models.ts:124](https://github.com/seamapi/javascript/blob/main/src/types/models.ts#L124)
+[src/types/models.ts:126](https://github.com/seamapi/javascript/blob/main/src/types/models.ts#L126)
 
 ___
 
@@ -139,7 +139,7 @@ ___
 
 #### Defined in
 
-[src/types/models.ts:125](https://github.com/seamapi/javascript/blob/main/src/types/models.ts#L125)
+[src/types/models.ts:127](https://github.com/seamapi/javascript/blob/main/src/types/models.ts#L127)
 
 ___
 
@@ -149,7 +149,7 @@ ___
 
 #### Defined in
 
-[src/types/models.ts:128](https://github.com/seamapi/javascript/blob/main/src/types/models.ts#L128)
+[src/types/models.ts:130](https://github.com/seamapi/javascript/blob/main/src/types/models.ts#L130)
 
 ___
 
@@ -159,4 +159,4 @@ ___
 
 #### Defined in
 
-[src/types/models.ts:117](https://github.com/seamapi/javascript/blob/main/src/types/models.ts#L117)
+[src/types/models.ts:119](https://github.com/seamapi/javascript/blob/main/src/types/models.ts#L119)
diff --git a/docs/interfaces/ConnectWebviewCreateRequest.md b/docs/interfaces/ConnectWebviewCreateRequest.md
index df52502d..e60418c0 100644
--- a/docs/interfaces/ConnectWebviewCreateRequest.md
+++ b/docs/interfaces/ConnectWebviewCreateRequest.md
@@ -16,4 +16,4 @@
 
 #### Defined in
 
-[src/types/route-requests.ts:4](https://github.com/seamapi/javascript/blob/main/src/types/route-requests.ts#L4)
+[src/types/route-requests.ts:5](https://github.com/seamapi/javascript/blob/main/src/types/route-requests.ts#L5)
diff --git a/docs/interfaces/ConnectedAccount.md b/docs/interfaces/ConnectedAccount.md
index 325742bb..f7f66c5f 100644
--- a/docs/interfaces/ConnectedAccount.md
+++ b/docs/interfaces/ConnectedAccount.md
@@ -19,7 +19,7 @@
 
 #### Defined in
 
-[src/types/models.ts:158](https://github.com/seamapi/javascript/blob/main/src/types/models.ts#L158)
+[src/types/models.ts:160](https://github.com/seamapi/javascript/blob/main/src/types/models.ts#L160)
 
 ___
 
@@ -29,7 +29,7 @@ ___
 
 #### Defined in
 
-[src/types/models.ts:155](https://github.com/seamapi/javascript/blob/main/src/types/models.ts#L155)
+[src/types/models.ts:157](https://github.com/seamapi/javascript/blob/main/src/types/models.ts#L157)
 
 ___
 
@@ -39,7 +39,7 @@ ___
 
 #### Defined in
 
-[src/types/models.ts:156](https://github.com/seamapi/javascript/blob/main/src/types/models.ts#L156)
+[src/types/models.ts:158](https://github.com/seamapi/javascript/blob/main/src/types/models.ts#L158)
 
 ___
 
@@ -49,4 +49,4 @@ ___
 
 #### Defined in
 
-[src/types/models.ts:157](https://github.com/seamapi/javascript/blob/main/src/types/models.ts#L157)
+[src/types/models.ts:159](https://github.com/seamapi/javascript/blob/main/src/types/models.ts#L159)
diff --git a/docs/interfaces/DevicesListRequest.md b/docs/interfaces/DevicesListRequest.md
index 133154c4..431d0316 100644
--- a/docs/interfaces/DevicesListRequest.md
+++ b/docs/interfaces/DevicesListRequest.md
@@ -18,7 +18,7 @@
 
 #### Defined in
 
-[src/types/route-requests.ts:9](https://github.com/seamapi/javascript/blob/main/src/types/route-requests.ts#L9)
+[src/types/route-requests.ts:10](https://github.com/seamapi/javascript/blob/main/src/types/route-requests.ts#L10)
 
 ___
 
@@ -28,7 +28,7 @@ ___
 
 #### Defined in
 
-[src/types/route-requests.ts:8](https://github.com/seamapi/javascript/blob/main/src/types/route-requests.ts#L8)
+[src/types/route-requests.ts:9](https://github.com/seamapi/javascript/blob/main/src/types/route-requests.ts#L9)
 
 ___
 
@@ -38,4 +38,4 @@ ___
 
 #### Defined in
 
-[src/types/route-requests.ts:10](https://github.com/seamapi/javascript/blob/main/src/types/route-requests.ts#L10)
+[src/types/route-requests.ts:11](https://github.com/seamapi/javascript/blob/main/src/types/route-requests.ts#L11)
diff --git a/docs/interfaces/OngoingAccessCode.md b/docs/interfaces/OngoingAccessCode.md
index 2f693908..6f22c6e4 100644
--- a/docs/interfaces/OngoingAccessCode.md
+++ b/docs/interfaces/OngoingAccessCode.md
@@ -31,7 +31,7 @@
 
 #### Defined in
 
-[src/types/models.ts:133](https://github.com/seamapi/javascript/blob/main/src/types/models.ts#L133)
+[src/types/models.ts:135](https://github.com/seamapi/javascript/blob/main/src/types/models.ts#L135)
 
 ___
 
@@ -45,7 +45,7 @@ ___
 
 #### Defined in
 
-[src/types/models.ts:135](https://github.com/seamapi/javascript/blob/main/src/types/models.ts#L135)
+[src/types/models.ts:137](https://github.com/seamapi/javascript/blob/main/src/types/models.ts#L137)
 
 ___
 
@@ -55,7 +55,7 @@ ___
 
 #### Defined in
 
-[src/types/models.ts:140](https://github.com/seamapi/javascript/blob/main/src/types/models.ts#L140)
+[src/types/models.ts:142](https://github.com/seamapi/javascript/blob/main/src/types/models.ts#L142)
 
 ___
 
@@ -69,7 +69,7 @@ ___
 
 #### Defined in
 
-[src/types/models.ts:134](https://github.com/seamapi/javascript/blob/main/src/types/models.ts#L134)
+[src/types/models.ts:136](https://github.com/seamapi/javascript/blob/main/src/types/models.ts#L136)
 
 ___
 
@@ -79,7 +79,7 @@ ___
 
 #### Defined in
 
-[src/types/models.ts:141](https://github.com/seamapi/javascript/blob/main/src/types/models.ts#L141)
+[src/types/models.ts:143](https://github.com/seamapi/javascript/blob/main/src/types/models.ts#L143)
 
 ___
 
@@ -89,4 +89,4 @@ ___
 
 #### Defined in
 
-[src/types/models.ts:139](https://github.com/seamapi/javascript/blob/main/src/types/models.ts#L139)
+[src/types/models.ts:141](https://github.com/seamapi/javascript/blob/main/src/types/models.ts#L141)
diff --git a/docs/interfaces/PendingActionAttempt.md b/docs/interfaces/PendingActionAttempt.md
index 1b41be0e..018db80e 100644
--- a/docs/interfaces/PendingActionAttempt.md
+++ b/docs/interfaces/PendingActionAttempt.md
@@ -36,7 +36,7 @@ ActionAttemptBase.action\_attempt\_id
 
 #### Defined in
 
-[src/types/models.ts:74](https://github.com/seamapi/javascript/blob/main/src/types/models.ts#L74)
+[src/types/models.ts:75](https://github.com/seamapi/javascript/blob/main/src/types/models.ts#L75)
 
 ___
 
@@ -50,7 +50,7 @@ ActionAttemptBase.action\_type
 
 #### Defined in
 
-[src/types/models.ts:75](https://github.com/seamapi/javascript/blob/main/src/types/models.ts#L75)
+[src/types/models.ts:76](https://github.com/seamapi/javascript/blob/main/src/types/models.ts#L76)
 
 ___
 
@@ -64,7 +64,7 @@ ActionAttemptBase.error
 
 #### Defined in
 
-[src/types/models.ts:85](https://github.com/seamapi/javascript/blob/main/src/types/models.ts#L85)
+[src/types/models.ts:86](https://github.com/seamapi/javascript/blob/main/src/types/models.ts#L86)
 
 ___
 
@@ -78,7 +78,7 @@ ActionAttemptBase.result
 
 #### Defined in
 
-[src/types/models.ts:84](https://github.com/seamapi/javascript/blob/main/src/types/models.ts#L84)
+[src/types/models.ts:85](https://github.com/seamapi/javascript/blob/main/src/types/models.ts#L85)
 
 ___
 
@@ -92,4 +92,4 @@ ActionAttemptBase.status
 
 #### Defined in
 
-[src/types/models.ts:83](https://github.com/seamapi/javascript/blob/main/src/types/models.ts#L83)
+[src/types/models.ts:84](https://github.com/seamapi/javascript/blob/main/src/types/models.ts#L84)
diff --git a/docs/interfaces/SuccessfulActionAttempt.md b/docs/interfaces/SuccessfulActionAttempt.md
index 8c469627..d23da9cf 100644
--- a/docs/interfaces/SuccessfulActionAttempt.md
+++ b/docs/interfaces/SuccessfulActionAttempt.md
@@ -36,7 +36,7 @@ ActionAttemptBase.action\_attempt\_id
 
 #### Defined in
 
-[src/types/models.ts:74](https://github.com/seamapi/javascript/blob/main/src/types/models.ts#L74)
+[src/types/models.ts:75](https://github.com/seamapi/javascript/blob/main/src/types/models.ts#L75)
 
 ___
 
@@ -50,7 +50,7 @@ ActionAttemptBase.action\_type
 
 #### Defined in
 
-[src/types/models.ts:75](https://github.com/seamapi/javascript/blob/main/src/types/models.ts#L75)
+[src/types/models.ts:76](https://github.com/seamapi/javascript/blob/main/src/types/models.ts#L76)
 
 ___
 
@@ -64,7 +64,7 @@ ActionAttemptBase.error
 
 #### Defined in
 
-[src/types/models.ts:106](https://github.com/seamapi/javascript/blob/main/src/types/models.ts#L106)
+[src/types/models.ts:108](https://github.com/seamapi/javascript/blob/main/src/types/models.ts#L108)
 
 ___
 
@@ -78,7 +78,7 @@ ActionAttemptBase.result
 
 #### Defined in
 
-[src/types/models.ts:107](https://github.com/seamapi/javascript/blob/main/src/types/models.ts#L107)
+[src/types/models.ts:109](https://github.com/seamapi/javascript/blob/main/src/types/models.ts#L109)
 
 ___
 
@@ -92,4 +92,4 @@ ActionAttemptBase.status
 
 #### Defined in
 
-[src/types/models.ts:105](https://github.com/seamapi/javascript/blob/main/src/types/models.ts#L105)
+[src/types/models.ts:107](https://github.com/seamapi/javascript/blob/main/src/types/models.ts#L107)
diff --git a/docs/interfaces/TimeBoundAccessCode.md b/docs/interfaces/TimeBoundAccessCode.md
index f617b900..b4eceff4 100644
--- a/docs/interfaces/TimeBoundAccessCode.md
+++ b/docs/interfaces/TimeBoundAccessCode.md
@@ -33,7 +33,7 @@
 
 #### Defined in
 
-[src/types/models.ts:133](https://github.com/seamapi/javascript/blob/main/src/types/models.ts#L133)
+[src/types/models.ts:135](https://github.com/seamapi/javascript/blob/main/src/types/models.ts#L135)
 
 ___
 
@@ -47,7 +47,7 @@ ___
 
 #### Defined in
 
-[src/types/models.ts:135](https://github.com/seamapi/javascript/blob/main/src/types/models.ts#L135)
+[src/types/models.ts:137](https://github.com/seamapi/javascript/blob/main/src/types/models.ts#L137)
 
 ___
 
@@ -57,7 +57,7 @@ ___
 
 #### Defined in
 
-[src/types/models.ts:146](https://github.com/seamapi/javascript/blob/main/src/types/models.ts#L146)
+[src/types/models.ts:148](https://github.com/seamapi/javascript/blob/main/src/types/models.ts#L148)
 
 ___
 
@@ -67,7 +67,7 @@ ___
 
 #### Defined in
 
-[src/types/models.ts:149](https://github.com/seamapi/javascript/blob/main/src/types/models.ts#L149)
+[src/types/models.ts:151](https://github.com/seamapi/javascript/blob/main/src/types/models.ts#L151)
 
 ___
 
@@ -81,7 +81,7 @@ ___
 
 #### Defined in
 
-[src/types/models.ts:134](https://github.com/seamapi/javascript/blob/main/src/types/models.ts#L134)
+[src/types/models.ts:136](https://github.com/seamapi/javascript/blob/main/src/types/models.ts#L136)
 
 ___
 
@@ -91,7 +91,7 @@ ___
 
 #### Defined in
 
-[src/types/models.ts:148](https://github.com/seamapi/javascript/blob/main/src/types/models.ts#L148)
+[src/types/models.ts:150](https://github.com/seamapi/javascript/blob/main/src/types/models.ts#L150)
 
 ___
 
@@ -101,7 +101,7 @@ ___
 
 #### Defined in
 
-[src/types/models.ts:147](https://github.com/seamapi/javascript/blob/main/src/types/models.ts#L147)
+[src/types/models.ts:149](https://github.com/seamapi/javascript/blob/main/src/types/models.ts#L149)
 
 ___
 
@@ -111,4 +111,4 @@ ___
 
 #### Defined in
 
-[src/types/models.ts:145](https://github.com/seamapi/javascript/blob/main/src/types/models.ts#L145)
+[src/types/models.ts:147](https://github.com/seamapi/javascript/blob/main/src/types/models.ts#L147)
diff --git a/docs/modules.md b/docs/modules.md
index 36ac9981..0ca0366f 100644
--- a/docs/modules.md
+++ b/docs/modules.md
@@ -27,6 +27,7 @@
 - [AccessCodeCreateBaseRequest](interfaces/AccessCodeCreateBaseRequest.md)
 - [AccessCodeCreateOngoingRequest](interfaces/AccessCodeCreateOngoingRequest.md)
 - [AccessCodeCreateScheduledRequest](interfaces/AccessCodeCreateScheduledRequest.md)
+- [AccessCodeUpdateBaseRequest](interfaces/AccessCodeUpdateBaseRequest.md)
 - [AccessCodesListResponse](interfaces/AccessCodesListResponse.md)
 - [ActionAttemptCreateResponse](interfaces/ActionAttemptCreateResponse.md)
 - [ActionAttemptGetResponse](interfaces/ActionAttemptGetResponse.md)
@@ -65,6 +66,9 @@
 - [AccessCode](modules.md#accesscode)
 - [AccessCodeCreateRequest](modules.md#accesscodecreaterequest)
 - [AccessCodeDeleteRequest](modules.md#accesscodedeleterequest)
+- [AccessCodeUpdateOngoingRequest](modules.md#accesscodeupdateongoingrequest)
+- [AccessCodeUpdateRequest](modules.md#accesscodeupdaterequest)
+- [AccessCodeUpdateScheduledRequest](modules.md#accesscodeupdatescheduledrequest)
 - [ActionAttempt](modules.md#actionattempt)
 - [ActionType](modules.md#actiontype)
 - [AnyDevice](modules.md#anydevice)
@@ -112,7 +116,7 @@ ___
 
 #### Defined in
 
-[src/types/models.ts:152](https://github.com/seamapi/javascript/blob/main/src/types/models.ts#L152)
+[src/types/models.ts:154](https://github.com/seamapi/javascript/blob/main/src/types/models.ts#L154)
 
 ___
 
@@ -122,7 +126,7 @@ ___
 
 #### Defined in
 
-[src/types/route-requests.ts:28](https://github.com/seamapi/javascript/blob/main/src/types/route-requests.ts#L28)
+[src/types/route-requests.ts:29](https://github.com/seamapi/javascript/blob/main/src/types/route-requests.ts#L29)
 
 ___
 
@@ -139,7 +143,37 @@ ___
 
 #### Defined in
 
-[src/types/route-requests.ts:32](https://github.com/seamapi/javascript/blob/main/src/types/route-requests.ts#L32)
+[src/types/route-requests.ts:52](https://github.com/seamapi/javascript/blob/main/src/types/route-requests.ts#L52)
+
+___
+
+### AccessCodeUpdateOngoingRequest
+
+Ƭ **AccessCodeUpdateOngoingRequest**: `Except`<[`AccessCodeCreateOngoingRequest`](interfaces/AccessCodeCreateOngoingRequest.md), ``"device_id"``\> & [`AccessCodeUpdateBaseRequest`](interfaces/AccessCodeUpdateBaseRequest.md)
+
+#### Defined in
+
+[src/types/route-requests.ts:38](https://github.com/seamapi/javascript/blob/main/src/types/route-requests.ts#L38)
+
+___
+
+### AccessCodeUpdateRequest
+
+Ƭ **AccessCodeUpdateRequest**: [`AccessCodeUpdateOngoingRequest`](modules.md#accesscodeupdateongoingrequest) \| [`AccessCodeUpdateScheduledRequest`](modules.md#accesscodeupdatescheduledrequest)
+
+#### Defined in
+
+[src/types/route-requests.ts:48](https://github.com/seamapi/javascript/blob/main/src/types/route-requests.ts#L48)
+
+___
+
+### AccessCodeUpdateScheduledRequest
+
+Ƭ **AccessCodeUpdateScheduledRequest**: `Except`<[`AccessCodeCreateScheduledRequest`](interfaces/AccessCodeCreateScheduledRequest.md), ``"device_id"``\> & [`AccessCodeUpdateBaseRequest`](interfaces/AccessCodeUpdateBaseRequest.md)
+
+#### Defined in
+
+[src/types/route-requests.ts:43](https://github.com/seamapi/javascript/blob/main/src/types/route-requests.ts#L43)
 
 ___
 
@@ -155,13 +189,13 @@ ___
 
 #### Defined in
 
-[src/types/models.ts:110](https://github.com/seamapi/javascript/blob/main/src/types/models.ts#L110)
+[src/types/models.ts:112](https://github.com/seamapi/javascript/blob/main/src/types/models.ts#L112)
 
 ___
 
 ### ActionType
 
-Ƭ **ActionType**: ``"LOCK_DOOR"`` \| ``"UNLOCK_DOOR"`` \| ``"CREATE_ACCESS_CODE"`` \| ``"DELETE_ACCESS_CODE"``
+Ƭ **ActionType**: ``"LOCK_DOOR"`` \| ``"UNLOCK_DOOR"`` \| ``"CREATE_ACCESS_CODE"`` \| ``"UPDATE_ACCESS_CODE"`` \| ``"DELETE_ACCESS_CODE"``
 
 #### Defined in
 
@@ -202,7 +236,7 @@ ___
 
 #### Defined in
 
-[src/types/route-requests.ts:37](https://github.com/seamapi/javascript/blob/main/src/types/route-requests.ts#L37)
+[src/types/route-requests.ts:57](https://github.com/seamapi/javascript/blob/main/src/types/route-requests.ts#L57)
 
 ___
 
@@ -231,7 +265,7 @@ ___
 
 #### Defined in
 
-[src/types/route-requests.ts:45](https://github.com/seamapi/javascript/blob/main/src/types/route-requests.ts#L45)
+[src/types/route-requests.ts:65](https://github.com/seamapi/javascript/blob/main/src/types/route-requests.ts#L65)
 
 ___
 
diff --git a/src/routes.ts b/src/routes.ts
index 140f663a..bb5c4d8d 100644
--- a/src/routes.ts
+++ b/src/routes.ts
@@ -18,6 +18,9 @@ import {
   DeviceUpdateRequest,
   DeviceGetRequest,
   DevicesListRequest,
+  AccessCodeUpdateScheduledRequest,
+  AccessCodeUpdateOngoingRequest,
+  AccessCodeUpdateRequest,
 } from "./types/route-requests"
 import { SeamActionAttemptError } from "./lib/api-error"
 import {
@@ -198,32 +201,11 @@ export abstract class Routes {
       }),
 
     create: (async (params: AccessCodeCreateRequest) => {
-      const parsedParams: any = Object.assign({}, params)
-
-      if (
-        (params as AccessCodeCreateScheduledRequest).starts_at === "object" &&
-        (params as AccessCodeCreateScheduledRequest).starts_at !== null
-      ) {
-        parsedParams.starts_at = (
-          (params as AccessCodeCreateScheduledRequest).starts_at as Date
-        ).toISOString()
-      }
-
-      if (
-        typeof (params as AccessCodeCreateScheduledRequest).ends_at ===
-          "object" &&
-        (params as AccessCodeCreateScheduledRequest).starts_at !== null
-      ) {
-        parsedParams.ends_at = (
-          (params as AccessCodeCreateScheduledRequest).ends_at as Date
-        ).toISOString()
-      }
-
       const action =
         await this.createActionAttemptAndWait<"CREATE_ACCESS_CODE">({
           url: "/access_codes/create",
           method: "POST",
-          data: parsedParams,
+          data: params,
         })
 
       return action.access_code
@@ -232,6 +214,20 @@ export abstract class Routes {
       (params: AccessCodeCreateScheduledRequest): Promise<TimeBoundAccessCode>
     },
 
+    // We can't narrow the return type here like we do with create because we're given partial input
+    update: async (
+      params: AccessCodeUpdateRequest
+    ): Promise<OngoingAccessCode | TimeBoundAccessCode> => {
+      const action =
+        await this.createActionAttemptAndWait<"UPDATE_ACCESS_CODE">({
+          url: "/access_codes/update",
+          method: "POST",
+          data: params,
+        })
+
+      return action.access_code
+    },
+
     delete: (params: AccessCodeDeleteRequest) =>
       this.createActionAttemptAndWait({
         url: "/access_codes/delete",
diff --git a/src/types/models.ts b/src/types/models.ts
index 820efa95..6a3400e4 100644
--- a/src/types/models.ts
+++ b/src/types/models.ts
@@ -68,6 +68,7 @@ export type ActionType =
   | "LOCK_DOOR"
   | "UNLOCK_DOOR"
   | "CREATE_ACCESS_CODE"
+  | "UPDATE_ACCESS_CODE"
   | "DELETE_ACCESS_CODE"
 
 interface ActionAttemptBase<T extends ActionType> {
@@ -98,6 +99,7 @@ export interface ActionAttemptWithError<T extends ActionType>
 export interface ActionAttemptResultTypeMap
   extends Record<ActionType, unknown> {
   CREATE_ACCESS_CODE: { access_code: AccessCode }
+  UPDATE_ACCESS_CODE: { access_code: AccessCode }
 }
 
 export interface SuccessfulActionAttempt<T extends ActionType>
diff --git a/src/types/route-requests.ts b/src/types/route-requests.ts
index ac3a5b58..1f502ba1 100644
--- a/src/types/route-requests.ts
+++ b/src/types/route-requests.ts
@@ -1,3 +1,4 @@
+import { Except } from "type-fest"
 import { CommonDeviceProperties, Provider } from "./models"
 
 export interface ConnectWebviewCreateRequest {
@@ -29,6 +30,25 @@ export type AccessCodeCreateRequest =
   | AccessCodeCreateOngoingRequest
   | AccessCodeCreateScheduledRequest
 
+export interface AccessCodeUpdateBaseRequest {
+  device_id?: string
+  access_code_id: string
+}
+
+export type AccessCodeUpdateOngoingRequest = Except<
+  AccessCodeCreateOngoingRequest,
+  "device_id"
+> &
+  AccessCodeUpdateBaseRequest
+export type AccessCodeUpdateScheduledRequest = Except<
+  AccessCodeCreateScheduledRequest,
+  "device_id"
+> &
+  AccessCodeUpdateBaseRequest
+export type AccessCodeUpdateRequest =
+  | AccessCodeUpdateOngoingRequest
+  | AccessCodeUpdateScheduledRequest
+
 export type AccessCodeDeleteRequest = {
   device_id?: string
   access_code_id: string
diff --git a/tests/fixtures/plugins/get-server-plugin.ts b/tests/fixtures/plugins/get-server-plugin.ts
index 629b87b1..0fc2a1fa 100644
--- a/tests/fixtures/plugins/get-server-plugin.ts
+++ b/tests/fixtures/plugins/get-server-plugin.ts
@@ -3,12 +3,13 @@ import { URL } from "url"
 import defaultAxios from "axios"
 import knex from "knex"
 import path from "path"
-import Seam from "../../../src"
+import Seam, { AccessCode } from "../../../src"
 
 type SeedLock = {
   connectedAccountId: string
   id1: string
   name1: string
+  accessCode: AccessCode
 }
 
 export type WorkerPublishedMessage = {
diff --git a/tests/fixtures/workers/helpers/add-fake-august-devices.ts b/tests/fixtures/workers/helpers/add-fake-august-devices.ts
index f9407e4f..7c22aba1 100644
--- a/tests/fixtures/workers/helpers/add-fake-august-devices.ts
+++ b/tests/fixtures/workers/helpers/add-fake-august-devices.ts
@@ -12,7 +12,13 @@ const addFakeAugustDevices = async (axios: Axios) => {
 
   const [firstDevice] = await getDeviceType(axios, "august_lock")
 
-  await axios.post("/access_codes/create", {
+  const {
+    data: {
+      action_attempt: {
+        result: { access_code },
+      },
+    },
+  } = await axios.post("/access_codes/create", {
     device_id: firstDevice.device_id,
     name: "Sample Code",
     code: "1234",
@@ -23,6 +29,7 @@ const addFakeAugustDevices = async (axios: Axios) => {
     id1: firstDevice.device_id,
     name1: firstDevice.properties.name,
     connectedAccountId: firstDevice.third_party_account_id,
+    accessCode: access_code,
   }
 }
 
diff --git a/tests/fixtures/workers/helpers/add-fake-schlage-devices.ts b/tests/fixtures/workers/helpers/add-fake-schlage-devices.ts
index acdde753..554bf502 100644
--- a/tests/fixtures/workers/helpers/add-fake-schlage-devices.ts
+++ b/tests/fixtures/workers/helpers/add-fake-schlage-devices.ts
@@ -12,7 +12,13 @@ const addFakeSchlageDevices = async (axios: Axios) => {
 
   const [firstDevice] = await getDeviceType(axios, "schlage_lock")
 
-  await axios.post("/access_codes/create", {
+  const {
+    data: {
+      action_attempt: {
+        result: { access_code },
+      },
+    },
+  } = await axios.post("/access_codes/create", {
     device_id: firstDevice.device_id,
     name: "Sample Code",
     code: "1234",
@@ -23,6 +29,7 @@ const addFakeSchlageDevices = async (axios: Axios) => {
     id1: firstDevice.device_id,
     name1: firstDevice.properties.name,
     connectedAccountId: firstDevice.third_party_account_id,
+    accessCode: access_code,
   }
 }
 
diff --git a/tests/routes.test.ts b/tests/routes.test.ts
index 9ca59ebc..aca80468 100644
--- a/tests/routes.test.ts
+++ b/tests/routes.test.ts
@@ -130,3 +130,17 @@ test(
   },
   "AccessCode"
 )
+
+test(
+  testAPIMethod("accessCodes.update"),
+  {
+    args: (seed) => [
+      {
+        access_code_id: seed.devices.augustLock.accessCode.access_code_id,
+        name: "new name",
+      },
+    ],
+    modifiesState: true,
+  },
+  "AccessCode"
+)