diff --git a/.github/workflows/test_qlib_from_pip.yml b/.github/workflows/test_qlib_from_pip.yml
index 83687fdcc..54368a89d 100644
--- a/.github/workflows/test_qlib_from_pip.yml
+++ b/.github/workflows/test_qlib_from_pip.yml
@@ -26,15 +26,15 @@ jobs:
     # refs: https://github.com/actions/setup-python/issues/682
     - name: Set up Python ${{ matrix.python-version }}
       if: (matrix.os == 'macos-latest' && matrix.python-version == '3.7') || (matrix.os == 'macos-11' && matrix.python-version == '3.7')
-      uses: actions/setup-python@v3
+      uses: actions/setup-python@v4
       with:
-        python-version: ${{ matrix.python-version }}
+        python-version: "3.7.15"
 
     - name: Set up Python ${{ matrix.python-version }}
       if: (matrix.os != 'macos-latest' || matrix.python-version != '3.7') && (matrix.os != 'macos-11' || matrix.python-version != '3.7')
-      uses: actions/setup-python@v3
+      uses: actions/setup-python@v4
       with:
-        python-version: ${{ matrix.python-version }}
+        python-version: "3.7.15"
 
     - name: Update pip to the latest version
       run: |
diff --git a/.github/workflows/test_qlib_from_source.yml b/.github/workflows/test_qlib_from_source.yml
index b9dc913d8..fb43f7e98 100644
--- a/.github/workflows/test_qlib_from_source.yml
+++ b/.github/workflows/test_qlib_from_source.yml
@@ -27,15 +27,15 @@ jobs:
     # refs: https://github.com/actions/setup-python/issues/682
     - name: Set up Python ${{ matrix.python-version }}
       if: (matrix.os == 'macos-latest' && matrix.python-version == '3.7') || (matrix.os == 'macos-11' && matrix.python-version == '3.7')
-      uses: actions/setup-python@v3
+      uses: actions/setup-python@v4
       with:
-        python-version: ${{ matrix.python-version }}
+        python-version: "3.7.15"
 
     - name: Set up Python ${{ matrix.python-version }}
       if: (matrix.os != 'macos-latest' || matrix.python-version != '3.7') && (matrix.os != 'macos-11' || matrix.python-version != '3.7')
-      uses: actions/setup-python@v3
+      uses: actions/setup-python@v4
       with:
-        python-version: ${{ matrix.python-version }}
+        python-version: "3.7.15"
 
     - name: Update pip to the latest version
       run: |
diff --git a/.github/workflows/test_qlib_from_source_slow.yml b/.github/workflows/test_qlib_from_source_slow.yml
index f545c509e..cae95e330 100644
--- a/.github/workflows/test_qlib_from_source_slow.yml
+++ b/.github/workflows/test_qlib_from_source_slow.yml
@@ -27,15 +27,15 @@ jobs:
     # refs: https://github.com/actions/setup-python/issues/682
     - name: Set up Python ${{ matrix.python-version }}
       if: (matrix.os == 'macos-latest' && matrix.python-version == '3.7') || (matrix.os == 'macos-11' && matrix.python-version == '3.7')
-      uses: actions/setup-python@v3
+      uses: actions/setup-python@v4
       with:
-        python-version: ${{ matrix.python-version }}
+        python-version: "3.7.15"
 
     - name: Set up Python ${{ matrix.python-version }}
       if: (matrix.os != 'macos-latest' || matrix.python-version != '3.7') && (matrix.os != 'macos-11' || matrix.python-version != '3.7')
-      uses: actions/setup-python@v3
+      uses: actions/setup-python@v4
       with:
-        python-version: ${{ matrix.python-version }}
+        python-version: "3.7.15"
 
     - name: Set up Python tools
       run: |