diff --git a/src/index.ts b/src/index.ts
index 04fae0d..c05c6ca 100755
--- a/src/index.ts
+++ b/src/index.ts
@@ -1 +1 @@
-export { default } from './lib/reoff-cite'
+export { default } from './lib/reoff-cite.js'
diff --git a/src/lib/reoff-cite.spec.ts b/src/lib/reoff-cite.spec.ts
index a7a1c8d..acd3cd8 100755
--- a/src/lib/reoff-cite.spec.ts
+++ b/src/lib/reoff-cite.spec.ts
@@ -1,4 +1,4 @@
-import reoffCite from './reoff-cite'
+import reoffCite from './reoff-cite.js'
 
 describe('reoffReoffCite', () => {
   it('should work', () => {