diff --git a/.gitea/workflows/android-build.yml b/.gitea/workflows/android-build.yml
index dbe0295..1ab38e4 100644
--- a/.gitea/workflows/android-build.yml
+++ b/.gitea/workflows/android-build.yml
@@ -4,12 +4,6 @@ on:
   push:
   workflow_dispatch:
 
-# Only one run per branch at a time. A new push cancels any in-progress run,
-# preventing duplicate builds when the runner picks up the same event twice.
-concurrency:
-  group: ${{ github.workflow }}-${{ github.ref }}
-  cancel-in-progress: true
-
 permissions:
   contents: write   # required for creating releases
   packages: write
@@ -186,13 +180,20 @@ jobs:
           MD_LIST=$(echo "$COMMIT_LOG" | sed 's/^/- /')
           BODY=$(printf '%s' "$MD_LIST" | python3 -c "import sys,json; print(json.dumps(sys.stdin.read()))")
 
-          # ── Create the release ───────────────────────────────────────────────
-          RESP=$(curl -sf -X POST "$API/releases" \
-            -H "Authorization: token $TOKEN" \
-            -H "Content-Type: application/json" \
-            -d "{\"tag_name\":\"$TAG\",\"name\":\"Build $VERSION\",\"body\":$BODY,\"draft\":false,\"prerelease\":false}")
-          RELEASE_ID=$(echo "$RESP" | python3 -c "import sys,json; print(json.load(sys.stdin)['id'])")
-          echo "Created release $TAG (id=$RELEASE_ID)"
+          # ── Create release (idempotent: reuse existing tag if already present) ───
+          EXISTING=$(curl -sf "$API/releases/tags/$TAG" \
+            -H "Authorization: token $TOKEN" || true)
+          if [[ -n "$EXISTING" ]]; then
+            RELEASE_ID=$(echo "$EXISTING" | python3 -c "import sys,json; print(json.load(sys.stdin)['id'])")
+            echo "Release $TAG already exists (id=$RELEASE_ID) — reusing."
+          else
+            RESP=$(curl -sf -X POST "$API/releases" \
+              -H "Authorization: token $TOKEN" \
+              -H "Content-Type: application/json" \
+              -d "{\"tag_name\":\"$TAG\",\"name\":\"Build $VERSION\",\"body\":$BODY,\"draft\":false,\"prerelease\":false}")
+            RELEASE_ID=$(echo "$RESP" | python3 -c "import sys,json; print(json.load(sys.stdin)['id'])")
+            echo "Created release $TAG (id=$RELEASE_ID)"
+          fi
 
           # ── Upload APKs as release assets ────────────────────────────────────
           upload_asset() {