diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 3ade069..4d3f8c4 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -21,7 +21,7 @@ jobs:
     runs-on: ${{ matrix.os }}
     strategy:
       matrix:
-        os: [ubuntu-20.04, windows-2019, macos-11]
+        os: [ubuntu-20.04, windows-2019, macos-13]
         cibw-build-prefix: ['*']
         include:
           - os: ubuntu-20.04
diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index e0810d1..1491661 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -18,17 +18,17 @@ jobs:
     strategy:
       matrix:
         python-version: ["3.7"]
-        os: ["ubuntu-latest", "windows-latest", "macos-latest"]
+        os: [ubuntu-20.04, windows-2019, macos-13]
         include:
           # set OS-specific cache paths
-          - os: ubuntu-latest
+          - os: ubuntu-20.04
             path: ~/.cache/pip
-          - os: windows-latest
+          - os: windows-2019
             path: ~\AppData\Local\pip\Cache
-          - os: macos-latest
+          - os: macos-13
             path: ~/Library/Caches/pip
           # more combinations:
-          - os: ubuntu-latest
+          - os: ubuntu-20.04
             python-version: "pypy3.9"
             path: ~/.cache/pip
     steps:
@@ -46,14 +46,14 @@ jobs:
             ~/.cargo/registry/cache/
             ~/.cargo/git/db/
             target/
-          key: ${{ runner.os }}-rust-v3-${{ hashFiles('**/Cargo.lock') }}
+          key: ${{ runner.os }}-rust-v4-${{ hashFiles('**/Cargo.lock') }}
       - name: Restore Python/pip cache
         uses: actions/cache/restore@v3
         with:
           path: ${{ matrix.path }}
-          key: ${{ runner.os }}-python-v2-${{ hashFiles('**/requirements.txt') }}
+          key: ${{ runner.os }}-python-v3-${{ hashFiles('**/requirements.txt') }}
           restore-keys: |
-           ${{ runner.os }}-python-v2-
+           ${{ runner.os }}-python-v3-
       - name: Install dependencies
         run: |
           python -m pip install --upgrade pip
@@ -77,10 +77,10 @@ jobs:
             ~/.cargo/registry/cache/
             ~/.cargo/git/db/
             target/
-          key: ${{ runner.os }}-rust-v3-${{ hashFiles('**/Cargo.lock') }}
+          key: ${{ runner.os }}-rust-v4-${{ hashFiles('**/Cargo.lock') }}
       - name: Save Python/pip cache
         uses: actions/cache/save@v3
         if: always()
         with:
           path: ${{ matrix.path }}
-          key: ${{ runner.os }}-python-v2-${{ hashFiles('**/requirements.txt') }}
+          key: ${{ runner.os }}-python-v3-${{ hashFiles('**/requirements.txt') }}