diff --git a/.gitea/workflows/ci-cd.yaml b/.gitea/workflows/ci-cd.yaml
index 5346ad6..216efe7 100644
--- a/.gitea/workflows/ci-cd.yaml
+++ b/.gitea/workflows/ci-cd.yaml
@@ -14,8 +14,24 @@ jobs:
       - name: Checkout code
         uses: actions/checkout@v4
 
-      - name: Setup Bun
-        uses: oven-sh/setup-bun@v2
+      - name: Install Bun
+        run: |
+          if ! command -v unzip >/dev/null; then
+            (command -v apt-get >/dev/null && apt-get update && apt-get install -y unzip) || \
+            (command -v apk >/dev/null && apk add --no-cache unzip)
+          fi
+          arch=$(uname -m)
+          case "$arch" in x86_64) target=x64 ;; aarch64|arm64) target=aarch64 ;; *) echo "unsupported arch: $arch"; exit 1 ;; esac
+          # musl images (Alpine) need the -musl build; the glibc one fails with spawn ENOENT
+          libc=""
+          if ldd --version 2>&1 | grep -qi musl; then libc="-musl"; fi
+          curl -fsSL -o /tmp/bun.zip "https://github.com/oven-sh/bun/releases/latest/download/bun-linux-${target}${libc}.zip"
+          unzip -q -o /tmp/bun.zip -d /tmp/bun-extract
+          mkdir -p "$HOME/.bun/bin"
+          mv /tmp/bun-extract/bun-linux-*/bun "$HOME/.bun/bin/bun"
+          chmod +x "$HOME/.bun/bin/bun"
+          echo "$HOME/.bun/bin" >> $GITHUB_PATH
+          "$HOME/.bun/bin/bun" --version
 
       - name: Install dependencies
         run: bun install --frozen-lockfile