diff --git a/.github/workflows/github-actions.yml b/.github/workflows/github-actions.yml
index 747bbec..4befa03 100644
--- a/.github/workflows/github-actions.yml
+++ b/.github/workflows/github-actions.yml
@@ -34,16 +34,14 @@ jobs:
           restore-keys: |
             ${{ runner.os }}-gradle-
 
-      # 환경별 yml 파일 생성(1) - application.yml
-      - name: make application.yml
-        if: |
-          contains(github.ref, 'dev')
-        run: |
-          mkdir -p ./src/main/resources # resources 폴더 생성
-          cd ./src/main/resources # resources 폴더로 이동
-          touch ./application.yml # application.yml 생성
-          echo "${{ secrets.YML }}" > ./application.yml # github actions에서 설정한 값을 application.yml 파일에 쓰기
-        shell: bash
+      - name: Set yml file
+        uses: microsoft/variable-substitution@v1
+        with:
+          files: 'src/main/resources/application.yml'
+        env:
+          spring.datasource.url: ${{ secrets.MYSQL_URL }}
+          spring.datasource.username: ${{ secrets.MYSQL_USER }}
+          spring.datasource.password: ${{ secrets.MYSQL_PW }}
 
       # 환경별 yml 파일 생성(2) - dev
       #- name: make application-dev.yml