diff --git a/CHANGELOG.md b/CHANGELOG.md
index 4f96f1e..de520de 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,10 @@
+## [3.6.4](https://github.com/norskeld/sigma/compare/v3.6.3...v3.6.4) (2023-07-03)
+
+
+### Bug Fixes
+
+* **package:** remove `postinstall` script, relax engine constraints ([#81](https://github.com/norskeld/sigma/issues/81)) ([52dc1e4](https://github.com/norskeld/sigma/commit/52dc1e4b0c417053b31cf35739bce54740fc6373)), closes [#80](https://github.com/norskeld/sigma/issues/80)
+
 ## [3.6.3](https://github.com/norskeld/sigma/compare/v3.6.2...v3.6.3) (2023-06-04)
 
 
diff --git a/package-lock.json b/package-lock.json
index bb4bd11..5027efc 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,12 +1,12 @@
 {
   "name": "@nrsk/sigma",
-  "version": "3.6.3",
+  "version": "3.6.4",
   "lockfileVersion": 2,
   "requires": true,
   "packages": {
     "": {
       "name": "@nrsk/sigma",
-      "version": "3.6.3",
+      "version": "3.6.4",
       "license": "MIT",
       "devDependencies": {
         "@commitlint/cli": "^17.6.6",
diff --git a/package.json b/package.json
index ccecb5d..a16e8ad 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@nrsk/sigma",
-  "version": "3.6.3",
+  "version": "3.6.4",
   "description": "TypeScript parser combinator library for building fast and convenient parsers.",
   "packageManager": "npm@9.7.2",
   "sideEffects": false,