diff --git a/src/schemas/comfyWorkflowSchema.ts b/src/schemas/comfyWorkflowSchema.ts
index 2b67dcf0c7..74f7c7a8d0 100644
--- a/src/schemas/comfyWorkflowSchema.ts
+++ b/src/schemas/comfyWorkflowSchema.ts
@@ -224,6 +224,7 @@ const zConfig = z
 const zExtra = z
   .object({
     ds: zDS.optional(),
+    frontendVersion: z.string().optional(),
     linkExtensions: z.array(zComfyLinkExtension).optional(),
     reroutes: z.array(zReroute).optional()
   })
diff --git a/src/utils/executionUtil.ts b/src/utils/executionUtil.ts
index 018e3b1c07..b630be5398 100644
--- a/src/utils/executionUtil.ts
+++ b/src/utils/executionUtil.ts
@@ -41,6 +41,8 @@ export const graphToPrompt = async (
   }
 
   compressWidgetInputSlots(workflow)
+  workflow.extra ??= {}
+  workflow.extra.frontendVersion = __COMFYUI_FRONTEND_VERSION__
 
   const output: ComfyApiWorkflow = {}
   // Process nodes in order of execution