diff --git a/CHANGELOG.md b/CHANGELOG.md
index 38c46ea..a78e178 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,11 @@
 # Changelog
 
+## 2025-11-13
+
+### 🔧 Changed
+
+- Update brand template ID migration warning message
+
 ## 2025-10-16
 
 ### 🔧 Changed
diff --git a/client/ts/sdk.gen.ts b/client/ts/sdk.gen.ts
index c273fe4..6c2056b 100644
--- a/client/ts/sdk.gen.ts
+++ b/client/ts/sdk.gen.ts
@@ -343,7 +343,7 @@ export class AutofillService {
   /**
    * <Warning>
    *
-   * Soon, all brand template IDs will be updated to a new format. If your integration stores brand template IDs, you'll need to migrate to use the new IDs. After we implement this change, you'll have 6 months to migrate before the old IDs are removed.
+   * Brand templates were migrated to use a new ID format in September 2025. If your integration stores brand template IDs, you'll need to migrate to use the new IDs. Old brand template IDs will continue to be accepted for 6 months to give you time to migrate to the new IDs.
    *
    * </Warning>
    *
@@ -419,7 +419,7 @@ export class BrandTemplateService {
   /**
    * <Warning>
    *
-   * Soon, all brand template IDs will be updated to a new format. If your integration stores brand template IDs, you'll need to migrate to use the new IDs. After we implement this change, you'll have 6 months to migrate before the old IDs are removed.
+   * Brand templates were migrated to use a new ID format in September 2025. If your integration stores brand template IDs, you'll need to migrate to use the new IDs. Old brand template IDs will continue to be accepted for 6 months to give you time to migrate to the new IDs.
    *
    * </Warning>
    *
@@ -447,7 +447,7 @@ export class BrandTemplateService {
   /**
    * <Warning>
    *
-   * Soon, all brand template IDs will be updated to a new format. If your integration stores brand template IDs, you'll need to migrate to use the new IDs. After we implement this change, you'll have 6 months to migrate before the old IDs are removed.
+   * Brand templates were migrated to use a new ID format in September 2025. If your integration stores brand template IDs, you'll need to migrate to use the new IDs. Old brand template IDs will continue to be accepted for 6 months to give you time to migrate to the new IDs.
    *
    * </Warning>
    *
@@ -475,7 +475,7 @@ export class BrandTemplateService {
   /**
    * <Warning>
    *
-   * Soon, all brand template IDs will be updated to a new format. If your integration stores brand template IDs, you'll need to migrate to use the new IDs. After we implement this change, you'll have 6 months to migrate before the old IDs are removed.
+   * Brand templates were migrated to use a new ID format in September 2025. If your integration stores brand template IDs, you'll need to migrate to use the new IDs. Old brand template IDs will continue to be accepted for 6 months to give you time to migrate to the new IDs.
    *
    * </Warning>
    *
diff --git a/openapi/spec.yml b/openapi/spec.yml
index 31238d5..26994d9 100644
--- a/openapi/spec.yml
+++ b/openapi/spec.yml
@@ -374,7 +374,7 @@ paths:
       description: |-
         <Warning>
 
-        Soon, all brand template IDs will be updated to a new format. If your integration stores brand template IDs, you'll need to migrate to use the new IDs. After we implement this change, you'll have 6 months to migrate before the old IDs are removed.
+        Brand templates were migrated to use a new ID format in September 2025. If your integration stores brand template IDs, you'll need to migrate to use the new IDs. Old brand template IDs will continue to be accepted for 6 months to give you time to migrate to the new IDs.
 
         </Warning>
 
@@ -534,7 +534,7 @@ paths:
       description: |-
         <Warning>
 
-        Soon, all brand template IDs will be updated to a new format. If your integration stores brand template IDs, you'll need to migrate to use the new IDs. After we implement this change, you'll have 6 months to migrate before the old IDs are removed.
+        Brand templates were migrated to use a new ID format in September 2025. If your integration stores brand template IDs, you'll need to migrate to use the new IDs. Old brand template IDs will continue to be accepted for 6 months to give you time to migrate to the new IDs.
 
         </Warning>
 
@@ -623,7 +623,7 @@ paths:
       description: |-
         <Warning>
 
-        Soon, all brand template IDs will be updated to a new format. If your integration stores brand template IDs, you'll need to migrate to use the new IDs. After we implement this change, you'll have 6 months to migrate before the old IDs are removed.
+        Brand templates were migrated to use a new ID format in September 2025. If your integration stores brand template IDs, you'll need to migrate to use the new IDs. Old brand template IDs will continue to be accepted for 6 months to give you time to migrate to the new IDs.
 
         </Warning>
 
@@ -669,7 +669,7 @@ paths:
       description: |-
         <Warning>
 
-        Soon, all brand template IDs will be updated to a new format. If your integration stores brand template IDs, you'll need to migrate to use the new IDs. After we implement this change, you'll have 6 months to migrate before the old IDs are removed.
+        Brand templates were migrated to use a new ID format in September 2025. If your integration stores brand template IDs, you'll need to migrate to use the new IDs. Old brand template IDs will continue to be accepted for 6 months to give you time to migrate to the new IDs.
 
         </Warning>