diff --git a/frontend/src/scripts/misc.ts b/frontend/src/scripts/misc.ts
index edb7e3c20..83c94fb7b 100644
--- a/frontend/src/scripts/misc.ts
+++ b/frontend/src/scripts/misc.ts
@@ -322,18 +322,8 @@ export async function findCurrentGroup(
   return retgroup;
 }
 
-type Challenge = {
-  name: string;
-  display: string;
-  autoRole: boolean;
-  type: string;
-  parameters: string | number[];
-  message: string;
-  requirements: object;
-};
-
-let challengeList: Challenge[] = [];
-export async function getChallengeList(): Promise<Challenge[]> {
+let challengeList: MonkeyTypes.Challenge[] = [];
+export async function getChallengeList(): Promise<MonkeyTypes.Challenge[]> {
   if (challengeList.length === 0) {
     return $.getJSON("challenges/_list.json", function (data) {
       challengeList = data;
diff --git a/frontend/src/scripts/types/types.d.ts b/frontend/src/scripts/types/types.d.ts
index f65686990..b7ef20061 100644
--- a/frontend/src/scripts/types/types.d.ts
+++ b/frontend/src/scripts/types/types.d.ts
@@ -572,4 +572,18 @@ declare namespace MonkeyTypes {
     [row4: string]: string[];
     [row5: string]: string[];
   }
+
+  interface Challenge {
+    name: string;
+    display: string;
+    autoRole: boolean;
+    type: string;
+    parameters: (string | number | boolean)[];
+    message: string;
+    requirements: {
+      [requirement: string]: {
+        [parameter: string]: string | number | boolean;
+      };
+    };
+  }
 }