diff --git a/package.json b/package.json
index 839e3d84..f9bbc070 100644
--- a/package.json
+++ b/package.json
@@ -35,7 +35,7 @@
     "ava": "^1.2.0",
     "c8": "^3.4.0",
     "documentation": "^9.1.1",
-    "esm": "^3.2.0",
+    "esm": "^3.2.1",
     "markdown-doctest": "^0.9.1",
     "rollup": "^1.1.2",
     "rollup-plugin-cleanup": "^3.1.1",