diff --git a/azure-pipelines.yml b/azure-pipelines.yml
index cab0fbb..83402af 100644
--- a/azure-pipelines.yml
+++ b/azure-pipelines.yml
@@ -12,6 +12,15 @@ jobs:
   - checkout: self
     clean: true
     fetchDepth: 1
+  - script: |
+      git fetch origin main:main
+      if git merge-base --is-ancestor $(Build.SourceVersion) main; then
+        echo "This commit is in the main branch."
+      else
+        echo "This commit is not in the main branch."
+        exit 1
+      fi
+    displayName: 'タグが付けられたCommitがdevelopブランチに存在するか確認'
   - task: Npm@1
     displayName: npm ci
     inputs: