diff --git a/CHANGELOG.md b/CHANGELOG.md
index 203e62282..764fbf3dd 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -16,6 +16,12 @@
 **Note**: A feature tagged as Experimental is in a
 high state of flux, you're at risk of it changing without notice.
 
+# 2.12.1
+
+- **Bug Fix**
+  - `ReadonlyRecord`
+    - fix `traverseWithIndex` implementation, #1704 (@waynevanson)
+
 # 2.12.0
 
 - **New Feature**
diff --git a/package.json b/package.json
index 05416f873..9633439bb 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "fp-ts",
-  "version": "2.12.0",
+  "version": "2.12.1",
   "description": "Functional programming in TypeScript",
   "main": "lib/index.js",
   "module": "es6/index.js",