diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
new file mode 100644
index 0000000..5a6338c
--- /dev/null
+++ b/.github/workflows/release.yml
@@ -0,0 +1,40 @@
+name: release
+on:
+  schedule:
+    - cron: "0 0 * * 3"
+
+env:
+  ACTION_FILENAME: release.yml
+  TARGET: v2fly/geoip
+  REQUIRED_FILES: |
+    cn.dat
+    geoip.dat
+    geoip-only-cn-private.dat
+    private.dat
+jobs:
+  build:
+    name: Build
+    runs-on: ubuntu-latest
+    steps:
+    - name: Check and release
+      run: |
+        TARGET_TAG_URL="https://api.github.com/repos/$TARGET/releases/latest"
+        TARGET_LATEST_VER=`curl -s ${TARGET_TAG_URL} --connect-timeout 30| grep 'tag_name' | cut -d\" -f4`
+        TARGET_DIST_URLs=`curl -s ${TARGET_TAG_URL} --connect-timeout 30| grep 'browser_download_url' | cut -d\" -f4`
+        DIST_TAGS_URL="https://api.github.com/repos/${{ github.repository }}/tags"
+        DIST_TAG_FOUND=`curl -s ${DIST_TAGS_URL} --connect-timeout 30| grep "\"name\"\: \"${TARGET_LATEST_VER}\""` || true
+        if [ -z ${DIST_TAG_FOUND} ]; then
+            echo $TARGET_DIST_URLs|while read -r line;do wget $line &> /dev/null;done
+            echo $REQUIRED_FILES|while read -r line;do ls $line;done
+            mkdir -p .github/workflows
+            wget -O .github/workflows/release.yml https://github.com/${{ github.repository }}/raw/master/.github/workflows/$ACTION_FILENAME
+            git init
+            git add .
+            git config --local user.name "${{ github.actor }}"
+            git config --local user.email "${{ github.actor }}@users.noreply.github.com"
+            git commit -m "Version ${TARGET_LATEST_VER}"
+            git tag -a "${TARGET_LATEST_VER}" -m "Version ${TARGET_LATEST_VER}"
+            git remote add origin "https://${{ github.actor }}:${{ secrets.GITHUB_TOKEN }}@github.com/${{ github.repository }}"
+            git push -u --force --follow-tags origin master
+        fi
+
diff --git a/cn.dat b/cn.dat
new file mode 100644
index 0000000..b1bd420
Binary files /dev/null and b/cn.dat differ
diff --git a/cn.dat.sha256sum b/cn.dat.sha256sum
new file mode 100644
index 0000000..556297a
--- /dev/null
+++ b/cn.dat.sha256sum
@@ -0,0 +1 @@
+5332e75185fc743de62d3fe8bd47df337fcb2aaac772126426c43f3bd6eae91c  cn.dat
diff --git a/geoip-only-cn-private.dat b/geoip-only-cn-private.dat
new file mode 100644
index 0000000..b87e9c2
Binary files /dev/null and b/geoip-only-cn-private.dat differ
diff --git a/geoip-only-cn-private.dat.sha256sum b/geoip-only-cn-private.dat.sha256sum
new file mode 100644
index 0000000..3f0a7f9
--- /dev/null
+++ b/geoip-only-cn-private.dat.sha256sum
@@ -0,0 +1 @@
+42e4663dea277d85fbd880a7b3164f10088d9b57c44eaf9dd90bfb4e500e4c6a  geoip-only-cn-private.dat
diff --git a/geoip.dat b/geoip.dat
new file mode 100644
index 0000000..dc2cc45
Binary files /dev/null and b/geoip.dat differ
diff --git a/geoip.dat.sha256sum b/geoip.dat.sha256sum
new file mode 100644
index 0000000..ac93d41
--- /dev/null
+++ b/geoip.dat.sha256sum
@@ -0,0 +1 @@
+f83e89edfd3b35acbbbb862a4c88a8ca3e1ddce4d298cc617be79bdaa23a0672  geoip.dat
diff --git a/private.dat b/private.dat
new file mode 100644
index 0000000..ba04bce
Binary files /dev/null and b/private.dat differ
diff --git a/private.dat.sha256sum b/private.dat.sha256sum
new file mode 100644
index 0000000..7000478
--- /dev/null
+++ b/private.dat.sha256sum
@@ -0,0 +1 @@
+ac5f6df7cf67c2f19e42f7bacdecdff7660671eab164af91633399517af00b73  private.dat