diff --git a/.github/.release-please-manifest.json b/.github/.release-please-manifest.json
index 76d5538..b28fea9 100644
--- a/.github/.release-please-manifest.json
+++ b/.github/.release-please-manifest.json
@@ -1,3 +1,3 @@
 {
-  ".": "0.9.0"
+  ".": "0.9.1"
 }
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 638cec7..4842fa4 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,24 @@
 # Changelog
 
+## [0.9.1](https://github.com/askpt/code-metrics/compare/v0.9.0...v0.9.1) (2026-08-22)
+
+
+### 🐛 Bug Fixes
+
+* surface warning when config thresholds are invalid ([#552](https://github.com/askpt/code-metrics/issues/552)) ([e1dd130](https://github.com/askpt/code-metrics/commit/e1dd1300a57745ce9dbf579cf6983c6b32ee366a))
+* verify source text on analysis cache hit to guard against hash collisions ([#556](https://github.com/askpt/code-metrics/issues/556)) ([7cf138e](https://github.com/askpt/code-metrics/commit/7cf138ed1818d6ba4aad00994304f086ad4a3ca6))
+
+
+### 🚀 Performance
+
+* avoid node.children array allocation in hot AST traversal loops ([#554](https://github.com/askpt/code-metrics/issues/554)) ([d10e517](https://github.com/askpt/code-metrics/commit/d10e517966d388531444b79945a3e771b97900db))
+* hoist regex literals in C# ERROR-node heuristics to module scope ([#555](https://github.com/askpt/code-metrics/issues/555)) ([92200d9](https://github.com/askpt/code-metrics/commit/92200d92824214d4bbb5374569179e3703e63d45))
+
+
+### 🔄 Refactoring
+
+* remove unused ConfigurationManager.logCurrentConfiguration ([#548](https://github.com/askpt/code-metrics/issues/548)) ([572f97d](https://github.com/askpt/code-metrics/commit/572f97d0412186f94fbde5559a4e841cc38315c2))
+
 ## [0.9.0](https://github.com/askpt/code-metrics/compare/v0.8.2...v0.9.0) (2026-08-09)
 
 
diff --git a/package-lock.json b/package-lock.json
index 9fc4397..de7701e 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,12 +1,12 @@
 {
   "name": "code-metrics",
-  "version": "0.9.0",
+  "version": "0.9.1",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
       "name": "code-metrics",
-      "version": "0.9.0",
+      "version": "0.9.1",
       "dependencies": {
         "tree-sitter": "0.21.1",
         "tree-sitter-c-sharp": "0.23.1",
diff --git a/package.json b/package.json
index 4265042..c914d78 100644
--- a/package.json
+++ b/package.json
@@ -2,7 +2,7 @@
   "name": "code-metrics",
   "displayName": "Code Complexity Metrics",
   "description": "A comprehensive Visual Studio Code extension that calculates and displays code metrics including Cognitive Complexity based on SonarSource's specification.",
-  "version": "0.9.0",
+  "version": "0.9.1",
   "publisher": "dev-asilva",
   "preview": true,
   "repository": {