diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 2ac24d6..9ec181b 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -9,7 +9,7 @@ jobs:
   build_asan:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v3
         with:
           submodules: true
       - name: Build Python+ASAN
@@ -36,9 +36,9 @@ jobs:
           - macos-latest
           - windows-latest
         python:
-          - "3.6"
-          - "3.8"
-          - "3.10"
+          - "3.6.15"
+          - "3.8.17"
+          - "3.10.12"
           - pypy-3.7
         install_libcxx:
           - false
@@ -52,10 +52,10 @@ jobs:
             python: pypy-3.7
     runs-on: ${{ matrix.os }}
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v3
         with:
           submodules: true
-      - uses: actions/setup-python@v2
+      - uses: actions/setup-python@v4
         with:
           python-version: ${{ matrix.python }}
       - name: Uninstall libcxx