diff --git a/.forgejo/scripts/notify-chart-bump.sh b/.forgejo/scripts/notify-chart-bump.sh
index 863d1b6..b9a34ce 100755
--- a/.forgejo/scripts/notify-chart-bump.sh
+++ b/.forgejo/scripts/notify-chart-bump.sh
@@ -129,7 +129,20 @@ for BRANCH in $BRANCHES; do
     MAJC=$(echo "$OLD_CHART_VER" | cut -d. -f1)
     MINC=$(echo "$OLD_CHART_VER" | cut -d. -f2)
     PATC=$(echo "$OLD_CHART_VER" | cut -d. -f3)
-    NEW_CHART_VER="$MAJC.$MINC.$((PATC + 1))"
+    # Chart-version bump strategy:
+    #   stable cut → MINOR++, PATCH=0  (e.g. 0.2.7 → 0.3.0)
+    #   beta cut   → PATCH++           (e.g. 0.3.0 → 0.3.1)
+    # This keeps the patch number bounded (≈ #betas-per-stable, not
+    # all-time), while staying monotonically increasing — JFrog chart
+    # repos reject duplicate chart-version numbers, so a literal
+    # "reset to 0.2.0" cycle would break uploads after the first
+    # stable cut. The actual zddc-server version lives in appVersion;
+    # chart version is just JFrog packaging metadata.
+    if [ "$CHANNEL" = "stable" ]; then
+        NEW_CHART_VER="$MAJC.$((MINC + 1)).0"
+    else
+        NEW_CHART_VER="$MAJC.$MINC.$((PATC + 1))"
+    fi
     sed -i "s/^version: .*/version: $NEW_CHART_VER/" chart/Chart.yaml
 
     echo "  appVersion: $CURRENT → $TARGET_VERSION"