diff --git a/.github/workflows/check-latest-version.yml b/.github/workflows/check-latest-version.yml
index 6a1d96f5..ea8a1448 100644
--- a/.github/workflows/check-latest-version.yml
+++ b/.github/workflows/check-latest-version.yml
@@ -15,7 +15,8 @@ jobs:
         run: |
           version=$(curl -s https://api.github.com/repos/jumpserver/jumpserver/releases/latest | jq -r .tag_name)
           echo "Current Version: ${version}"
-          if [ -z "${version}" ]; then
+          if [ -z "${version}" ] || [ "${version}" = "null" ] || ! echo "${version}" | grep -q '^v'; then
+            echo "Invalid or missing version (API error / rate limit?), aborting to avoid corrupting mkdocs.yml"
             exit 1
           fi
           echo "version=${version}" >> $GITHUB_ENV
@@ -24,7 +25,7 @@ jobs:
       - name: Update Version
         if: env.update == 'true'
         run: |
-          sed -i "s@tag: v.*@tag: ${{ env.version }}@" mkdocs.yml
+          sed -i "s@tag: .*@tag: ${{ env.version }}@" mkdocs.yml
           git config --global user.name 'github-actions[bot]'
           git config --global user.email 'github-actions[bot]@users.noreply.github.com'
           git add .
diff --git a/mkdocs.yml b/mkdocs.yml
index bb44f171..90e14775 100644
--- a/mkdocs.yml
+++ b/mkdocs.yml
@@ -247,7 +247,7 @@ markdown_extensions:
 
 extra:
   jumpserver:
-    tag: null
+    tag: v5.0.0
     client_tag: 4.1.7
   search:
     separator: '[\s\-\.]+'