diff --git a/roles/security_check/tasks/create_readme.yml b/roles/security_check/tasks/create_readme.yml
index b3a95e5..ea38b18 100644
--- a/roles/security_check/tasks/create_readme.yml
+++ b/roles/security_check/tasks/create_readme.yml
@@ -37,6 +37,7 @@
     git init
     git config --global user.email "sa_8001@ex-em.com"
     git config --global user.name "ByeonJungHun"
+    git config --global init.defaultBranch main
     git remote add origin https://{{ git_user }}@{{ git_key }}github.com/CloudMOA/security_check.git
     git add .
     git commit -m "README.md Update"