diff --git a/bzcarbon2/changelog.txt b/bzcarbon2/changelog.txt
index 1f735f9..24f2257 100644
--- a/bzcarbon2/changelog.txt
+++ b/bzcarbon2/changelog.txt
@@ -1,4 +1,10 @@
 ---------------------------------------------------------------------------------------------------
+Version: 2.1.1
+Date: 16.03.2026
+  Bug Fixes:
+    - Correct renamed "efficiency-module"
+    - K2: Add missing kr-prefix
+---------------------------------------------------------------------------------------------------
 Version: 2.1.0
 Date: 11.03.2026
   Changes:
diff --git a/bzcarbon2/info.json b/bzcarbon2/info.json
index 2ae2f55..43adf8d 100644
--- a/bzcarbon2/info.json
+++ b/bzcarbon2/info.json
@@ -1,6 +1,6 @@
 {
   "name": "bzcarbon2",
-  "version": "2.1.0",
+  "version": "2.1.1",
   "factorio_version": "2.0",
   "title": "Graphite & Diamonds - Legacy",
   "description": "Adds elemental carbon items to the game, including graphite, diamonds, graphene, and more.",