diff --git a/.github/workflows/workflow.yml b/.github/workflows/workflow.yml
index eb7fab9..07e319c 100644
--- a/.github/workflows/workflow.yml
+++ b/.github/workflows/workflow.yml
@@ -17,7 +17,6 @@ jobs:
 
       - name: build dist
         run: |
-          git submodule init && git submodule update
           ./dist.sh
           ls -la
 
@@ -28,6 +27,7 @@ jobs:
           artifacts: "adguardcert-*.zip"
           token: ${{ secrets.GITHUB_TOKEN }}
           generateReleaseNotes: true
+          prerelease: ${{ contains(github.ref, '-') }}
 
       - name: write PR url
         if: github.event_name == 'pull_request'
@@ -43,3 +43,10 @@ jobs:
             adguardcert-*.zip
             README.md
             pull_request_url.txt
+
+      - name: update json
+        if: startsWith(github.ref, 'refs/tags/v')
+        run: |
+          ./update.sh
+          git push origin master
+          ls -la
diff --git a/module/module.prop b/module/module.prop
index e1a62db..7687b7d 100644
--- a/module/module.prop
+++ b/module/module.prop
@@ -1,7 +1,7 @@
 id=adguardcert
 name=AdGuard Certificate
-version=v2.1-beta1
-versionCode=35
+version=v2.1
+versionCode=36
 author=AdGuard
 description=Moves AdGuard's root CA certificate from the user certificate store to the system certificate store.
 updateJson=https://raw.githubusercontent.com/AdguardTeam/adguardcert/master/update.json
diff --git a/update.sh b/update.sh
new file mode 100755
index 0000000..6675b19
--- /dev/null
+++ b/update.sh
@@ -0,0 +1,25 @@
+#!/bin/bash
+
+case version in
+*-*)
+    ;;
+*)
+    git checkout -B master origin/master
+    cat module/module.prop | (
+    IFS="="
+    while read k v; do
+        read $k <<< "$v"
+    done
+    cat << EOF > update.json
+{
+  "version": "$version",
+  "versionCode": $versionCode,
+  "zipUrl": "https://github.com/AdguardTeam/adguardcert/releases/download/$version/adguardcert-$version.zip",
+  "changelog": "https://github.com/AdguardTeam/adguardcert/releases/tag/$version"
+}
+EOF
+    )
+    git add update.json
+    git commit -m "skipci: Update update.json"
+    ;;
+esac