diff --git a/.gitea/workflows/pipeline.yml b/.gitea/workflows/pipeline.yml
index 3083a2e..8698f9b 100644
--- a/.gitea/workflows/pipeline.yml
+++ b/.gitea/workflows/pipeline.yml
@@ -46,8 +46,9 @@ jobs:
         run: |
           # Get base chart version from Chart.yaml
           BASE_VERSION=$(grep '^version:' chart/Chart.yaml | awk '{print $2}')
-          # Use timestamp for ordered versions (e.g., 0.1.0-20240511.130400)
-          TIMESTAMP=$(date -u +"%Y%m%d.%H%M%S")
+          # Use timestamp for ordered versions (e.g., 0.1.0-20240511-130400)
+          # Note: SemVer pre-release cannot contain dots, only hyphens and alphanumerics
+          TIMESTAMP=$(date -u +"%Y%m%d-%H%M%S")
           CHART_VERSION="${BASE_VERSION}-${TIMESTAMP}"
           
           # Update both version and appVersion