diff --git a/.github/actions/install-ktx-software/action.yml b/.github/actions/install-ktx-software/action.yml
index c7d4982..0fbf208 100644
--- a/.github/actions/install-ktx-software/action.yml
+++ b/.github/actions/install-ktx-software/action.yml
@@ -5,7 +5,7 @@ inputs:
   version:
     description: Version of KTX-Software to install
     required: false
-    default: "4.4.2"
+    default: "5.0.0-rc1"
 
 runs:
   using: composite