diff --git a/src/cookie-jar.mjs b/src/cookie-jar.mjs
index 5bc9d73..2b18174 100644
--- a/src/cookie-jar.mjs
+++ b/src/cookie-jar.mjs
@@ -1,4 +1,4 @@
-import Cookie from "./cookie";
+import Cookie from "./cookie.mjs";
 import url from "url";
 
 export default class CookieJar {
diff --git a/src/index.mjs b/src/index.mjs
index c9f811f..334d6c8 100644
--- a/src/index.mjs
+++ b/src/index.mjs
@@ -1,6 +1,6 @@
-import fetch from "./fetch";
-import CookieJar from "./cookie-jar";
-import Cookie from "./cookie";
+import fetch from "./fetch.mjs";
+import CookieJar from "./cookie-jar.mjs";
+import Cookie from "./cookie.mjs";
 
 const cookieJar = new CookieJar();