diff --git a/docs/developer-docs/latest/development/providers.md b/docs/developer-docs/latest/development/providers.md
index 4cb30d513f..04a19a3010 100644
--- a/docs/developer-docs/latest/development/providers.md
+++ b/docs/developer-docs/latest/development/providers.md
@@ -151,6 +151,11 @@ module.exports = {
       delete(file) {
         // delete the file in the provider
       },
+      checkFileSize(file, { sizeLimit }) {
+        // implement your own file size limit logic
+        // there is a default logic in place if this
+        // method is not implemented
+      },
     };
   },
 };
diff --git a/docs/developer-docs/latest/plugins/upload.md b/docs/developer-docs/latest/plugins/upload.md
index cb25dda41c..1cc5b04105 100644
--- a/docs/developer-docs/latest/plugins/upload.md
+++ b/docs/developer-docs/latest/plugins/upload.md
@@ -135,7 +135,7 @@ export default [
 
 </code-group>
 
-In addition to the middleware configuration, you can pass the `sizeLimit`, which is an integer in bytes, in the `providerOptions` of the [plugin configuration](/developer-docs/latest/setup-deployment-guides/configurations/optional/plugins.md) in `./config/plugins.js`:
+In addition to the middleware configuration, you can pass the `sizeLimit`, which is an integer in bytes, in the [plugin configuration](/developer-docs/latest/setup-deployment-guides/configurations/optional/plugins.md) in `./config/plugins.js`:
 
 <code-group>
 
@@ -148,9 +148,7 @@ module.exports = {
   // ...
   upload: {
     config: {
-      providerOptions: {
-        sizeLimit: 250 * 1024 * 1024 // 256mb in bytes
-      }
+      sizeLimit: 250 * 1024 * 1024 // 256mb in bytes
     }
   }
 };
diff --git a/docs/developer-docs/latest/update-migration-guides/migration-guides/v4/migration-guide-4.5.1-to-4.6.1.md b/docs/developer-docs/latest/update-migration-guides/migration-guides/v4/migration-guide-4.5.1-to-4.6.1.md
index 5d2be00770..b869df6a99 100644
--- a/docs/developer-docs/latest/update-migration-guides/migration-guides/v4/migration-guide-4.5.1-to-4.6.1.md
+++ b/docs/developer-docs/latest/update-migration-guides/migration-guides/v4/migration-guide-4.5.1-to-4.6.1.md
@@ -6,10 +6,13 @@ canonicalUrl: https://docs.strapi.io/developer-docs/latest/update-migration-guid
 
 # v4.5.1+ to v4.6.1 migration guide
 
-The Strapi v4.5.1+ to v4.6.1 migration guide upgrades v4.5.1+ to v4.6.1. We introduced a configuration for webhooks to receive populated relations. The migration guide consists of:
+The Strapi v4.5.1+ to v4.6.1 migration guide upgrades v4.5.1+ to v4.6.1. We introduced a configuration for webhooks to receive populated relations. Also, this migration guide is needed for all users who were limiting media size for the local upload provider.
+
+The migration guide consists of:
 
 - Upgrading the application dependencies
 - Changing the webhooks configuration (optional)
+- Updating the local upload provider `sizeLimit`
 - Reinitializing the application
 
 ## Upgrading the application dependencies to 4.6.1
@@ -66,4 +69,64 @@ With this, you will no longer receive populated relations in webhooks, and **res
 
 You can see more of the available configuration options in the [server configuration documentation](/developer-docs/latest/setup-deployment-guides/configurations/required/server.md).
 
+## Updating the sizeLimit provider configuration
+
+This step is only required if you were using the [`sizeLimit` configuration](/developer-docs/latest/plugins/upload.md#max-file-size) for your upload provider.
+
+:::caution
+The documentation required the `sizeLimit` to be in bytes, but it was actually in kilobytes. This is now fixed, and the limit will be interpreted as bytes.
+
+If you, for some reason, were limiting the file size to kilobytes, you should update the value to be in bytes.
+:::
+
+We recommend to move the `sizeLimit` outside the provider options like the following, as it will be deprecated in the next major version.
+<code-group>
+
+<code-block title="JAVASCRIPT">
+
+```js
+// path: ./config/plugins.js
+
+module.exports = {
+  // ...
+  upload: {
+    config: {
+      sizeLimit: 250 * 1024 * 1024 // Now
+      providerOptions: {
+        sizeLimit: 250 * 1024 * 1024 // Before
+      }
+    }
+  }
+};
+```
+
+</code-block>
+
+<code-block title="TYPESCRIPT">
+
+```js
+// path: ./config/plugins.ts
+
+export default {
+  // ...
+  upload: {
+    config: {
+      sizeLimit: 250 * 1024 * 1024 // Now
+      providerOptions: {
+        sizeLimit: 250 * 1024 * 1024 // Before
+      }
+    }
+  }
+};
+```
+
+</code-block>
+
+</code-group>
+
+To change the script:
+
+1. In the `./config/plugins.js` file, identify the upload configuration if you have one.
+2. (_optional_) If you have a `sizeLimit`, move it one level above `providerOptions`.
+
 !!!include(developer-docs/latest/update-migration-guides/migration-guides/v4/snippets/Rebuild-and-start-snippet.md)!!!