diff --git a/client/gatsby-node.js b/client/gatsby-node.js
index df986c247cf..648a5ac5ef8 100644
--- a/client/gatsby-node.js
+++ b/client/gatsby-node.js
@@ -326,6 +326,7 @@ exports.createSchemaCustomization = ({ actions }) => {
       instructions: String
       isLastChallengeInBlock: Boolean
       isPrivate: Boolean
+      lang: String
       module: String
       msTrophyId: String
       nodules: [Nodule]
diff --git a/curriculum/src/file-handler.ts b/curriculum/src/file-handler.ts
index 0049432957e..5c27d32d391 100644
--- a/curriculum/src/file-handler.ts
+++ b/curriculum/src/file-handler.ts
@@ -153,6 +153,7 @@ export type Challenge = {
   missing?: boolean;
   challengeFiles?: ChallengeFile[];
   solutions?: ChallengeFile[][];
+  lang?: string;
 };
 
 export interface BlockStructure {