diff --git a/scripts/core/issueLoader.ts b/scripts/core/issueLoader.ts
index cbdd0fc0..8d9b6479 100644
--- a/scripts/core/issueLoader.ts
+++ b/scripts/core/issueLoader.ts
@@ -15,11 +15,11 @@ export class IssueLoader {
     if (TESTING) {
       switch (labels) {
         case 'broken guide,status:warning':
-          issues = (await import('../../tests/__data__/input/issues/broken_guide_warning.js'))
+          issues = (await import('../../tests/__data__/input/issues/broken_guide_warning.mjs'))
             .default
           break
         case 'broken guide,status:down':
-          issues = (await import('../../tests/__data__/input/issues/broken_guide_down.js')).default
+          issues = (await import('../../tests/__data__/input/issues/broken_guide_down.mjs')).default
           break
       }
     } else {