diff --git a/KSP_VERSION b/KSP_VERSION
index 6b89d58..81f3632 100644
--- a/KSP_VERSION
+++ b/KSP_VERSION
@@ -1 +1 @@
-1.12.2
+1.12.3
diff --git a/README.md b/README.md
index b2c80fd..df27f6e 100644
--- a/README.md
+++ b/README.md
@@ -10,7 +10,7 @@ http://forum.kerbalspaceprogram.com/index.php?showtopic=140541
 
 ## Requirements
 
-* KSP version 1.10.1 (build 2939) is the only supported KSP version
+* KSP version 1.12.3 (build 3173) is the only supported KSP version
 * [ModuleManager](http://forum.kerbalspaceprogram.com/index.php?showtopic=50533) is required.
 
 ## Installation