diff --git a/CHANGELOG.md b/CHANGELOG.md
index 8f18244..337a69c 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,11 @@
 # Changelog
 
+## 0.21.0 - 2021-06-27
+
+### Added
+
+- Support regular expression in title substitution (#80). Thanks @viktomas for this great enhancement!
+
 ## 0.20.4 - 2020-10-09
 
 ### Added
diff --git a/package.json b/package.json
index 76fa54f..1d8ce7c 100644
--- a/package.json
+++ b/package.json
@@ -28,5 +28,5 @@
     "webpack": "^5.40.0",
     "webpack-cli": "^4.7.2"
   },
-  "version": "0.20.4"
+  "version": "0.21.0"
 }
diff --git a/packages/firefox/manifest.json b/packages/firefox/manifest.json
index 8fb704c..9b9232a 100644
--- a/packages/firefox/manifest.json
+++ b/packages/firefox/manifest.json
@@ -1,7 +1,7 @@
 {
   "manifest_version": 2,
   "name": "Copy Selection as Markdown",
-  "version": "0.20.4",
+  "version": "0.21.0",
   "description": "Copy title, URL, and selection as Markdown",
   "icons": {
     "48": "icons/extension.svg",
diff --git a/packages/firefox/package.json b/packages/firefox/package.json
index 1d8de9c..3ff82b5 100644
--- a/packages/firefox/package.json
+++ b/packages/firefox/package.json
@@ -1,6 +1,6 @@
 {
   "name": "copy-selection-as-markdown-firefox",
-  "version": "0.20.4",
+  "version": "0.21.0",
   "description": "copy-selection-as-markdown Firefox addon",
   "author": "0x6b",
   "license": "MIT",