diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index 42c692db74..4adccddf65 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -106,7 +106,7 @@ jobs:
       fail-fast: false
       matrix:
         node: ['20.x']
-        ts: ['4.7', '4.8', '4.9', '5.0', '5.1', '5.2', '5.3']
+        ts: ['4.7', '4.8', '4.9', '5.0', '5.1', '5.2', '5.3', '5.4']
     steps:
       - name: Checkout repo
         uses: actions/checkout@v4
diff --git a/package.json b/package.json
index e454324c89..d8606e8cd5 100644
--- a/package.json
+++ b/package.json
@@ -50,7 +50,7 @@
     "release-it": "^14.12.5",
     "serve": "^14.2.0",
     "ts-node": "^10.9.2",
-    "typescript": "^5.2.2"
+    "typescript": "^5.4.3"
   },
   "resolutions": {
     "esbuild": "0.19.7",
diff --git a/packages/toolkit/package.json b/packages/toolkit/package.json
index 717cba2305..2c40556fcd 100644
--- a/packages/toolkit/package.json
+++ b/packages/toolkit/package.json
@@ -90,7 +90,7 @@
     "tslib": "^1.10.0",
     "tsup": "^7.2.0",
     "tsx": "^3.12.2",
-    "typescript": "^5.3.3",
+    "typescript": "^5.4.5",
     "vite-tsconfig-paths": "^4.3.1",
     "vitest": "^1.1.3",
     "yargs": "^15.3.1"
diff --git a/packages/toolkit/src/createAsyncThunk.ts b/packages/toolkit/src/createAsyncThunk.ts
index f384ab9af2..e7ee39a05a 100644
--- a/packages/toolkit/src/createAsyncThunk.ts
+++ b/packages/toolkit/src/createAsyncThunk.ts
@@ -116,7 +116,7 @@ export const miniSerializeError = (value: any): SerializedError => {
 
 export type AsyncThunkConfig = {
   state?: unknown
-  dispatch?: Dispatch
+  dispatch?: ThunkDispatch<unknown, unknown, UnknownAction>
   extra?: unknown
   rejectValue?: unknown
   serializedErrorType?: unknown
@@ -240,7 +240,7 @@ export type AsyncThunkAction<
   ThunkArg,
   ThunkApiConfig extends AsyncThunkConfig,
 > = (
-  dispatch: GetDispatch<ThunkApiConfig>,
+  dispatch: NonNullable<GetDispatch<ThunkApiConfig>>,
   getState: () => GetState<ThunkApiConfig>,
   extra: GetExtra<ThunkApiConfig>,
 ) => SafePromise<
@@ -577,7 +577,7 @@ export const createAsyncThunk = /* @__PURE__ */ (() => {
 
     function actionCreator(
       arg: ThunkArg,
-    ): AsyncThunkAction<Returned, ThunkArg, ThunkApiConfig> {
+    ): AsyncThunkAction<Returned, ThunkArg, Required<ThunkApiConfig>> {
       return (dispatch, getState, extra) => {
         const requestId = options?.idGenerator
           ? options.idGenerator(arg)
diff --git a/packages/toolkit/src/tests/createReducer.test-d.ts b/packages/toolkit/src/tests/createReducer.test-d.ts
index 535710a256..cfc0c899fb 100644
--- a/packages/toolkit/src/tests/createReducer.test-d.ts
+++ b/packages/toolkit/src/tests/createReducer.test-d.ts
@@ -43,10 +43,13 @@ describe('type tests', () => {
 
     // @ts-expect-error
     createReducer<string>(0 as number, (builder) => {
-      // @ts-expect-error
-      builder
-        .addCase('increment', incrementHandler)
-        .addCase('decrement', decrementHandler)
+      expectTypeOf(builder.addCase)
+        .parameter(1)
+        .not.toMatchTypeOf(incrementHandler)
+
+      expectTypeOf(builder.addCase)
+        .parameter(1)
+        .not.toMatchTypeOf(decrementHandler)
     })
   })
 
diff --git a/yarn.lock b/yarn.lock
index 62f59f6a2d..ded1d18947 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -7488,7 +7488,7 @@ __metadata:
     tslib: "npm:^1.10.0"
     tsup: "npm:^7.2.0"
     tsx: "npm:^3.12.2"
-    typescript: "npm:^5.3.3"
+    typescript: "npm:^5.4.5"
     vite-tsconfig-paths: "npm:^4.3.1"
     vitest: "npm:^1.1.3"
     yargs: "npm:^15.3.1"
@@ -25733,7 +25733,7 @@ __metadata:
     release-it: "npm:^14.12.5"
     serve: "npm:^14.2.0"
     ts-node: "npm:^10.9.2"
-    typescript: "npm:^5.2.2"
+    typescript: "npm:^5.4.3"
   languageName: unknown
   linkType: soft
 
@@ -28334,6 +28334,26 @@ __metadata:
   languageName: node
   linkType: hard
 
+"typescript@npm:^5.4.3":
+  version: 5.4.3
+  resolution: "typescript@npm:5.4.3"
+  bin:
+    tsc: bin/tsc
+    tsserver: bin/tsserver
+  checksum: 10/de4c69f49a7ad4b1ea66a6dcc8b055ac34eb56af059a069d8988dd811c5e649be07e042e5bf573e8d0ac3ec2f30e6c999aa651cd09f6e9cbc6113749e8b6be20
+  languageName: node
+  linkType: hard
+
+"typescript@npm:^5.4.5":
+  version: 5.4.5
+  resolution: "typescript@npm:5.4.5"
+  bin:
+    tsc: bin/tsc
+    tsserver: bin/tsserver
+  checksum: 10/d04a9e27e6d83861f2126665aa8d84847e8ebabcea9125b9ebc30370b98cb38b5dff2508d74e2326a744938191a83a69aa9fddab41f193ffa43eabfdf3f190a5
+  languageName: node
+  linkType: hard
+
 "typescript@npm:~4.2.4":
   version: 4.2.4
   resolution: "typescript@npm:4.2.4"
@@ -28384,6 +28404,26 @@ __metadata:
   languageName: node
   linkType: hard
 
+"typescript@patch:typescript@npm%3A^5.4.3#optional!builtin<compat/typescript>":
+  version: 5.4.3
+  resolution: "typescript@patch:typescript@npm%3A5.4.3#optional!builtin<compat/typescript>::version=5.4.3&hash=d69c25"
+  bin:
+    tsc: bin/tsc
+    tsserver: bin/tsserver
+  checksum: 10/3abea475798fdf7ee46e75dafc50c85f30fd1e7061559ec2af61646f23d16c91742703f04f0ac55be52f58ca05c02f77404b7b94bbad16278c9a54c9eeb4f4ea
+  languageName: node
+  linkType: hard
+
+"typescript@patch:typescript@npm%3A^5.4.5#optional!builtin<compat/typescript>":
+  version: 5.4.5
+  resolution: "typescript@patch:typescript@npm%3A5.4.5#optional!builtin<compat/typescript>::version=5.4.5&hash=d69c25"
+  bin:
+    tsc: bin/tsc
+    tsserver: bin/tsserver
+  checksum: 10/584be8bac7112ad49a9eb9992f71d542b1ff2fafb5bb315e1c196145e8feab589f1d7223cfb2d5df6770789582e6918f8287d1f2f89911b38eb80e29c560ad00
+  languageName: node
+  linkType: hard
+
 "typescript@patch:typescript@npm%3A~4.2.4#optional!builtin<compat/typescript>":
   version: 4.2.4
   resolution: "typescript@patch:typescript@npm%3A4.2.4#optional!builtin<compat/typescript>::version=4.2.4&hash=334f98"