diff --git a/.github/workflows/test-osx.yml b/.github/workflows/test-osx.yml
index 19928d875..49df01729 100644
--- a/.github/workflows/test-osx.yml
+++ b/.github/workflows/test-osx.yml
@@ -9,14 +9,14 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        python-version: [3.6]
+        python-version: [3.8.10]
         cxx: [clang++]
         std: [c++98, c++11, c++14] # TODO: c++17 is failing !
 
     steps:
-    - uses: actions/checkout@v2
+    - uses: actions/checkout@v4
     - name: setup python
-      uses: actions/setup-python@v2
+      uses: actions/setup-python@v5
       with:
         python-version: ${{ matrix.python-version }}
     - name: setup prerequisites
diff --git a/.github/workflows/test-ubuntu.yml b/.github/workflows/test-ubuntu.yml
index dab98aee4..9910232e8 100644
--- a/.github/workflows/test-ubuntu.yml
+++ b/.github/workflows/test-ubuntu.yml
@@ -26,7 +26,7 @@ jobs:
       image: ${{ matrix.docker-img }}
 
     steps:
-    - uses: actions/checkout@v2
+    - uses: actions/checkout@v4
 
     - name: build
       run: |
diff --git a/.github/workflows/test-windows.yml b/.github/workflows/test-windows.yml
index 36c4a8e4f..e7b02927b 100644
--- a/.github/workflows/test-windows.yml
+++ b/.github/workflows/test-windows.yml
@@ -11,8 +11,8 @@ jobs:
         python-version: [3.7]
 
     steps:
-    - uses: actions/checkout@v2
-    - uses: actions/setup-python@v2
+    - uses: actions/checkout@v4
+    - uses: actions/setup-python@v5
       with:
         python-version: ${{ matrix.python-version }}
     - uses: microsoft/setup-msbuild@v1.1