diff --git a/CHANGELOG.md b/CHANGELOG.md
index 6dd8fdf1..8d460e32 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,8 +1,11 @@
 # Change Log
 This project adheres to [Semantic Versioning](http://semver.org/).
 
+## 3.1.20
+* Fix ES modules support.
+
 ## 3.1.19
-* Reduce `customAlphabet` size (by Enrico Scherlies).
+* Reduced `customAlphabet` size (by Enrico Scherlies).
 
 ## 3.1.18
 * Fixed `package.exports`.
diff --git a/package.json b/package.json
index cad53d58..6121d28e 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "nanoid",
-  "version": "3.1.19",
+  "version": "3.1.20",
   "description": "A tiny (108 bytes), secure URL-friendly unique string ID generator",
   "keywords": [
     "uuid",
@@ -74,7 +74,7 @@
     {
       "name": "customAlphabet",
       "import": "{ customAlphabet }",
-      "limit": "141 B"
+      "limit": "142 B"
     },
     {
       "name": "urlAlphabet",