diff --git a/History.md b/History.md
index 35b484f..7d2dd59 100644
--- a/History.md
+++ b/History.md
@@ -1,4 +1,4 @@
-[5.5.0 / 2021-xx-xx](https://github.com/clean-css/clean-css-cli/compare/5.4...HEAD)
+[5.5.0 / 2021-12-08](https://github.com/clean-css/clean-css-cli/compare/5.4...v5.5.0)
 ==================
 
 * Adds a new `--watch` switch, which makes CLI re-run optimizations when watched file(s) change.
diff --git a/package-lock.json b/package-lock.json
index 15deb08..5317737 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,6 +1,6 @@
 {
   "name": "clean-css-cli",
-  "version": "5.4.2",
+  "version": "5.5.0",
   "lockfileVersion": 1,
   "requires": true,
   "dependencies": {
diff --git a/package.json b/package.json
index 65176d4..a6924ff 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "clean-css-cli",
-  "version": "5.4.2",
+  "version": "5.5.0",
   "description": "A command-line interface to clean-css CSS optimization library",
   "scripts": {
     "check": "jshint ./bin/cleancss .",