diff --git a/.github/workflows/build-deb.yaml b/.github/workflows/build-deb.yaml
index c1692b4..7ef52b4 100644
--- a/.github/workflows/build-deb.yaml
+++ b/.github/workflows/build-deb.yaml
@@ -91,9 +91,9 @@ jobs:
           if [[ "$VERSION" == *"~${CODENAME}"* || "$VERSION" == *"+${CODENAME}"* ]]; then
             echo "Version already contains codename suffix, skipping dch."
           else
-            # If there's already a ~ in version (like ~pre1), add +codename
-            if [[ "$VERSION" == *"~"* ]]; then
-              dch --local +${CODENAME} --distribution ${CODENAME} "Build for ${CODENAME}"
+            if [[ ! $GITHUB_REF =~ ^refs/tags/ ]]; then
+              # Not a tag, so add ~pre<x>
+              dch --local ~pre${GITHUB_RUN_NUMBER}+${CODENAME} --distribution ${CODENAME} "Pre-release build"
             else
               dch --local ~${CODENAME} --distribution ${CODENAME} "Build for ${CODENAME}"
             fi
diff --git a/debian/changelog b/debian/changelog
index 3022b38..4a59c13 100644
--- a/debian/changelog
+++ b/debian/changelog
@@ -1,3 +1,9 @@
+libosal (0.1.1) unstable; urgency=low
+
+  * prep: github debian build action
+
+ -- Robert Burger <robert.burger@dlr.de>  Tue, 05 Aug 2025 07:07:08 +0200
+
 libosal (0.1.0) unstable; urgency=low
 
   * del: old project props