diff --git a/core/version_defaults.mk b/core/version_defaults.mk
index feb643e..c7aa309 100644
--- a/core/version_defaults.mk
+++ b/core/version_defaults.mk
@@ -78,7 +78,7 @@
 .KATI_READONLY := PLATFORM_SDK_VERSION
 
 # This is the sdk extension version of this tree.
-PLATFORM_SDK_EXTENSION_VERSION := 4
+PLATFORM_SDK_EXTENSION_VERSION := 5
 .KATI_READONLY := PLATFORM_SDK_EXTENSION_VERSION
 
 # This is the sdk extension version that PLATFORM_SDK_VERSION ships with.