diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index 5e5a9ca..2991ba2 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -21,7 +21,10 @@ jobs:
           set -euo pipefail
           v="${GITHUB_REF_NAME}"
           d="kvspace-c-abi-$v-linux-x86_64"
-          mkdir -p "$d/lib"
+          mkdir -p "$d/include" "$d/lib"
+          # 本仓无公共头（内部头在 src/），权威 ABI 头定义在 kvspace 仓，随实现一并发布
+          git clone --depth 1 https://github.com/array2d/kvspace.git /tmp/kvspace-hdr
+          cp -r /tmp/kvspace-hdr/include/kvspace "$d/include/"
           cp build/libkvspace-c.so* "$d/lib/"
           printf '{"abi":"%s"}\n' "$v" > "$d/abi-manifest.json"
           tar czf "$d.tar.gz" "$d"