diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 0958e93dc..0da6c5a4e 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -76,7 +76,7 @@ jobs:
       run: brew install boost
 
     - name: Update CMake
-      uses: jwlawson/actions-setup-cmake@v1.8
+      uses: jwlawson/actions-setup-cmake@v1.9
 
     - name: Cache wheels
       if: runner.os == 'macOS'
@@ -152,7 +152,7 @@ jobs:
     # MSVC, but for now, this action works:
     - name: Prepare compiler environment for Windows 🐍 2.7
       if: matrix.python == 2.7 && runner.os == 'Windows'
-      uses: ilammy/msvc-dev-cmd@v1
+      uses: ilammy/msvc-dev-cmd@v1.8.0
       with:
         arch: x64
 
@@ -194,7 +194,7 @@ jobs:
         debug: ${{ matrix.python-debug }}
 
     - name: Update CMake
-      uses: jwlawson/actions-setup-cmake@v1.8
+      uses: jwlawson/actions-setup-cmake@v1.9
 
     - name: Valgrind cache
       if: matrix.valgrind
@@ -446,7 +446,7 @@ jobs:
       run: python3 -m pip install --upgrade pip
 
     - name: Update CMake
-      uses: jwlawson/actions-setup-cmake@v1.8
+      uses: jwlawson/actions-setup-cmake@v1.9
 
     - name: Configure
       shell: bash
@@ -728,10 +728,10 @@ jobs:
         architecture: x86
 
     - name: Update CMake
-      uses: jwlawson/actions-setup-cmake@v1.8
+      uses: jwlawson/actions-setup-cmake@v1.9
 
     - name: Prepare MSVC
-      uses: ilammy/msvc-dev-cmd@v1
+      uses: ilammy/msvc-dev-cmd@v1.8.0
       with:
         arch: x86
 
@@ -774,10 +774,10 @@ jobs:
         python-version: ${{ matrix.python }}
 
     - name: Update CMake
-      uses: jwlawson/actions-setup-cmake@v1.8
+      uses: jwlawson/actions-setup-cmake@v1.9
 
     - name: Prepare MSVC
-      uses: ilammy/msvc-dev-cmd@v1
+      uses: ilammy/msvc-dev-cmd@v1.8.0
       with:
         toolset: 14.0
 
@@ -828,7 +828,7 @@ jobs:
         python-version: ${{ matrix.python }}
 
     - name: Update CMake
-      uses: jwlawson/actions-setup-cmake@v1.8
+      uses: jwlawson/actions-setup-cmake@v1.9
 
     - name: Prepare env
       run: python -m pip install -r tests/requirements.txt --prefer-binary
diff --git a/.github/workflows/configure.yml b/.github/workflows/configure.yml
index cddf60b37..01eacba1f 100644
--- a/.github/workflows/configure.yml
+++ b/.github/workflows/configure.yml
@@ -56,7 +56,7 @@ jobs:
     # An action for adding a specific version of CMake:
     #   https://github.com/jwlawson/actions-setup-cmake
     - name: Setup CMake ${{ matrix.cmake }}
-      uses: jwlawson/actions-setup-cmake@v1.8
+      uses: jwlawson/actions-setup-cmake@v1.9
       with:
         cmake-version: ${{ matrix.cmake }}