diff --git a/packages/message-encryption/src/symmetric.ts b/packages/message-encryption/src/symmetric.ts
index 3e531edeb3..8f289324cc 100644
--- a/packages/message-encryption/src/symmetric.ts
+++ b/packages/message-encryption/src/symmetric.ts
@@ -1,4 +1,4 @@
-import { Symmetric } from "./constants";
+import { Symmetric } from "./constants.js";
 import { getSubtle, randomBytes } from "./crypto.js";
 
 export async function encrypt(