diff --git a/backend/src/schema/resolvers/posts.js b/backend/src/schema/resolvers/posts.js
index b15b3a915..cf0cad7d3 100644
--- a/backend/src/schema/resolvers/posts.js
+++ b/backend/src/schema/resolvers/posts.js
@@ -263,7 +263,7 @@ export default {
         const { pinnedPost, pinnedAt } = transactionResult
         pinnedPostWithNestedAttributes = {
           ...pinnedPost,
-          pinnedAt
+          pinnedAt,
         }
       } finally {
         session.close()
diff --git a/backend/src/schema/resolvers/posts.spec.js b/backend/src/schema/resolvers/posts.spec.js
index fc739bbe6..ab6a73fd6 100644
--- a/backend/src/schema/resolvers/posts.spec.js
+++ b/backend/src/schema/resolvers/posts.spec.js
@@ -672,7 +672,7 @@ describe('UpdatePost', () => {
             data: {
               pinPost: {
                 id: 'created-and-pinned-by-same-admin',
-                pinnedAt: expect.any(String)
+                pinnedAt: expect.any(String),
               },
             },
             errors: undefined,