diff --git a/CHANGELOG.md b/CHANGELOG.md
index 52f1907b..e317c260 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,11 @@
 # Changelog
 
+## 4.2.1
+
+**Fixes**:
+
+- Add support for prefix unary expressions.
+
 ## 4.2.0
 
 **Compatibility Notice**:
diff --git a/package-lock.json b/package-lock.json
index f987170e..1d6aeedf 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,12 +1,12 @@
 {
   "name": "rollup-plugin-dts",
-  "version": "4.2.0",
+  "version": "4.2.1",
   "lockfileVersion": 2,
   "requires": true,
   "packages": {
     "": {
       "name": "rollup-plugin-dts",
-      "version": "4.2.0",
+      "version": "4.2.1",
       "license": "LGPL-3.0",
       "dependencies": {
         "magic-string": "^0.26.1"
diff --git a/package.json b/package.json
index dce59875..2448d1eb 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "rollup-plugin-dts",
-  "version": "4.2.0",
+  "version": "4.2.1",
   "description": "A rollup plugin that will bundle up your .d.ts definition files.",
   "keywords": [
     "rollup-plugin",