diff --git a/CHANGELOG.md b/CHANGELOG.md
index 33e81f368f..bd23cbd3da 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,18 @@
 # Changelog
 
+## [v2.66.2](https://github.com/PathOfBuildingCommunity/PathOfBuilding-PoE2/tree/v2.66.2) (2026/07/25)
+
+[Full Changelog](https://github.com/PathOfBuildingCommunity/PathOfBuilding/compare/v2.66.1...v2.66.2)
+
+
+## What's Changed
+### Fixed Crashes
+- Fix Warden import crash [\#10002](https://github.com/PathOfBuildingCommunity/PathOfBuilding/pull/10002) ([vaisest](https://github.com/vaisest))
+### Fixed Calculations
+- Fix Cost efficiency math and add mods to breakdown [\#10004](https://github.com/PathOfBuildingCommunity/PathOfBuilding/pull/10004) ([vaisest](https://github.com/vaisest))
+
+
+
 ## [v2.66.1](https://github.com/PathOfBuildingCommunity/PathOfBuilding-PoE2/tree/v2.66.1) (2026/07/25)
 
 [Full Changelog](https://github.com/PathOfBuildingCommunity/PathOfBuilding/compare/v2.66.0...v2.66.1)
diff --git a/changelog.txt b/changelog.txt
index 6bbb12e23e..8d50d1c9e5 100644
--- a/changelog.txt
+++ b/changelog.txt
@@ -1,3 +1,12 @@
+VERSION[2.66.2][2026/07/25]
+
+--- Fixed Crashes ---
+* Fix Warden import crash (vaisest)
+
+--- Fixed Calculations ---
+* Fix Cost efficiency math and add mods to breakdown (vaisest)
+
+
 VERSION[2.66.1][2026/07/25]
 
 --- Fixed Crashes ---
diff --git a/manifest.xml b/manifest.xml
index b2189ed28b..80e84ddd90 100644
--- a/manifest.xml
+++ b/manifest.xml
@@ -1,6 +1,6 @@
 <?xml version='1.0' encoding='UTF-8'?>
 <PoBVersion>
-	<Version number="2.66.1" />
+	<Version number="2.66.2" />
 	<Source part="default" url="https://raw.githubusercontent.com/PathOfBuildingCommunity/PathOfBuilding/{branch}/" />
 	<Source part="runtime" platform="win32" url="https://raw.githubusercontent.com/PathOfBuildingCommunity/PathOfBuilding/{branch}/runtime/" />
 	<Source part="program" url="https://raw.githubusercontent.com/PathOfBuildingCommunity/PathOfBuilding/{branch}/src/" />