diff --git a/.changeset/spotty-students-pump.md b/.changeset/spotty-students-pump.md
new file mode 100644
index 0000000000..6b0c9074ae
--- /dev/null
+++ b/.changeset/spotty-students-pump.md
@@ -0,0 +1,5 @@
+---
+"@vue-storefront/multistore": patch
+---
+
+[UPDATED] Set the return type of the createMultistoreExtension helper to `ApiClientExtension`.
diff --git a/.changeset/strong-scissors-accept.md b/.changeset/strong-scissors-accept.md
new file mode 100644
index 0000000000..d462589539
--- /dev/null
+++ b/.changeset/strong-scissors-accept.md
@@ -0,0 +1,5 @@
+---
+"@vue-storefront/middleware": major
+---
+
+[CHANGED] Updated the type of the `hooks` property in the `ApiClientExtension` interface so that the hooks' `configuration` param is typed properly. This is a breaking change if you are using `@vue-storefront/middleware` version `4.1.2` or lower.
diff --git a/packages/middleware/src/types/common.ts b/packages/middleware/src/types/common.ts
index fb72c9b51b..51146db368 100644
--- a/packages/middleware/src/types/common.ts
+++ b/packages/middleware/src/types/common.ts
@@ -108,7 +108,7 @@ export interface ApiClientExtension<API = any, CONTEXT = any, CONFIG = any> {
     req: AlokaiRequest,
     res: AlokaiResponse,
     hooksContext: AlokaiContainer
-  ) => ApiClientExtensionHooks;
+  ) => ApiClientExtensionHooks<CONFIG>;
 }
 
 export type ErrorHandler = (
@@ -129,7 +129,7 @@ export interface Integration<
     extensions: ApiClientExtension<API, CONTEXT>[]
     // TODO(IN-4338): There is a bug in the types here
     // we're not able to verify if the methods are namespaced or not with this implementation.
-  ) => ApiClientExtension<API, CONTEXT>[];
+  ) => ApiClientExtension<API, CONTEXT, CONFIG>[];
   customQueries?: Record<string, CustomQueryFunction>;
   initConfig?: TObject;
   /**
diff --git a/packages/multistore/src/extension.ts b/packages/multistore/src/extension.ts
index f75857f9dd..c6ae34a1ff 100644
--- a/packages/multistore/src/extension.ts
+++ b/packages/multistore/src/extension.ts
@@ -8,7 +8,7 @@ import { fetchConfigWithCache } from "./cache/fetchConfigWithCache";
 
 export const createMultistoreExtension = (
   multistoreConfig: MultistoreExtensionMethods
-) => {
+): ApiClientExtension => {
   const cacheManager = multistoreConfig.cacheManagerFactory();
 
   return {
@@ -37,5 +37,5 @@ export const createMultistoreExtension = (
         },
       };
     },
-  } satisfies ApiClientExtension;
+  };
 };