diff --git a/source/image-handler/src/index.ts b/source/image-handler/src/index.ts
index 0a6c46118..f4df5ae4c 100755
--- a/source/image-handler/src/index.ts
+++ b/source/image-handler/src/index.ts
@@ -112,6 +112,8 @@ function getResponseHeaders(isError: boolean = false, statusCode: number = Statu
 
   if (isError) {
     headers['Content-Type'] = 'application/json';
+  } else {
+    headers['Vary'] = 'Accept';
   }
 
   switch (statusCode) {
diff --git a/source/image-handler/test/index.spec.ts b/source/image-handler/test/index.spec.ts
index 61da60590..b2cc61eb0 100644
--- a/source/image-handler/test/index.spec.ts
+++ b/source/image-handler/test/index.spec.ts
@@ -36,6 +36,7 @@ describe('index', () => {
         'Content-Type': 'image/jpeg',
         'Cache-Control': 'max-age=31536000, immutable',
         Expires: undefined,
+        Vary: 'Accept',
         'Last-Modified': undefined,
       },
       body: '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',