diff --git a/CHANGELOG.md b/CHANGELOG.md
index 14447d5..2d70950 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,15 @@
+## [4.0.1](https://github.com/holvonix-open/io-ts-fuzzer/compare/v4.0.0...v4.0.1) (2019-08-10)
+
+
+### 💄 Polish
+
+* prettify docs ([8018a80](https://github.com/holvonix-open/io-ts-fuzzer/commit/8018a80))
+
+
+### 📖 Documentation
+
+* document use of [@experimental](https://github.com/experimental) ([3a925cc](https://github.com/holvonix-open/io-ts-fuzzer/commit/3a925cc))
+
 # [4.0.0](https://github.com/holvonix-open/io-ts-fuzzer/compare/v3.0.5...v4.0.0) (2019-08-09)
 
 
diff --git a/package.json b/package.json
index d532299..001c20e 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "io-ts-fuzzer",
-  "version": "4.0.0",
+  "version": "4.0.1",
   "description": "Fuzzing for io-ts codecs and types",
   "repository": {
     "type": "git",