diff --git a/image-recipe/build-auto-installer-iso.sh b/image-recipe/build-auto-installer-iso.sh
index 0d410c1f..a2227a2a 100755
--- a/image-recipe/build-auto-installer-iso.sh
+++ b/image-recipe/build-auto-installer-iso.sh
@@ -65,8 +65,8 @@ else
 fi
 echo "$BUILD_NUM" | sudo tee "$BUILD_COUNTER_FILE" > /dev/null 2>/dev/null || BUILD_NUM=1
 GIT_SHORT=$(cd "$SCRIPT_DIR/.." && git rev-parse --short HEAD 2>/dev/null || echo "dev")
-# Version format: major.minor.patch (semver)
-BUILD_VERSION="1.3.0"
+# Version format: major.minor.patch-prerelease (semver)
+BUILD_VERSION="1.3.0-alpha"
 echo "Build #${BUILD_NUM} (${BUILD_VERSION}, commit ${GIT_SHORT})"
 
 # Architecture-dependent variables