diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 2f826fc6d..4e0d590ae 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -9,7 +9,7 @@ jobs:
       - uses: actions/checkout@v1
       - uses: actions/setup-python@v1
         with:
-          python-version: '3.7'
+          python-version: '3.7.4'
 
       - name: Install dependencies
         run: |
@@ -34,7 +34,7 @@ jobs:
       - uses: actions/checkout@v1
       - uses: actions/setup-python@v1
         with:
-          python-version: '3.7'
+          python-version: '3.7.4'
 
       - name: Install dependencies
         run: |
@@ -104,7 +104,7 @@ jobs:
       - uses: actions/checkout@v1
       - uses: actions/setup-python@v1
         with:
-          python-version: '3.7'
+          python-version: '3.7.4'
 
       - name: Install dependencies
         run: |