diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index bdb0f3de..c16b677a 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -38,14 +38,14 @@ jobs:
       with:
         ruby-version: ${{ matrix.ruby }}
 
-    - uses: actions/cache@v2
+    - uses: actions/cache@v4
       if: runner.os == 'Linux'
       with:
         path: ~/.cache/red-datasets
         key: ${{ runner.os }}-${{ hashFiles('lib/**') }}
         restore-keys: ${{ runner.os }}-
 
-    - uses: actions/cache@v2
+    - uses: actions/cache@v4
       if: |
         runner.os == 'macOS'
       with:
@@ -54,7 +54,7 @@ jobs:
         key: ${{ runner.os }}-${{ hashFiles('lib/**') }}
         restore-keys: ${{ runner.os }}-
 
-    - uses: actions/cache@v2
+    - uses: actions/cache@v4
       if: |
         runner.os == 'Windows'
       with:
diff --git a/.github/workflows/nmatrix.yml b/.github/workflows/nmatrix.yml
index 8cd0e560..7bfbcd49 100644
--- a/.github/workflows/nmatrix.yml
+++ b/.github/workflows/nmatrix.yml
@@ -32,14 +32,14 @@ jobs:
       with:
         ruby-version: ${{ matrix.ruby }}
 
-    - uses: actions/cache@v2
+    - uses: actions/cache@v4
       if: runner.os == 'Linux'
       with:
         path: ~/.cache/red-datasets
         key: ${{ runner.os }}-${{ hashFiles('lib/**') }}
         restore-keys: ${{ runner.os }}-
 
-    - uses: actions/cache@v2
+    - uses: actions/cache@v4
       if: |
         runner.os == 'macOS'
       with:
@@ -48,7 +48,7 @@ jobs:
         key: ${{ runner.os }}-${{ hashFiles('lib/**') }}
         restore-keys: ${{ runner.os }}-
 
-    - uses: actions/cache@v2
+    - uses: actions/cache@v4
       if: |
         runner.os == 'Windows'
       with:
diff --git a/.github/workflows/pycall.yml b/.github/workflows/pycall.yml
index 37d95ab0..4010bb0a 100644
--- a/.github/workflows/pycall.yml
+++ b/.github/workflows/pycall.yml
@@ -46,14 +46,14 @@ jobs:
         python-version: ${{ matrix.python }}
         architecture: ${{ matrix.python_architecture }}
 
-    - uses: actions/cache@v2
+    - uses: actions/cache@v4
       if: runner.os == 'Linux'
       with:
         path: ~/.cache/red-datasets
         key: ${{ runner.os }}-${{ hashFiles('lib/**') }}
         restore-keys: ${{ runner.os }}-
 
-    - uses: actions/cache@v2
+    - uses: actions/cache@v4
       if: |
         runner.os == 'macOS'
       with:
@@ -62,7 +62,7 @@ jobs:
           key: ${{ runner.os }}-${{ hashFiles('lib/**') }}
           restore-keys: ${{ runner.os }}-
 
-    - uses: actions/cache@v2
+    - uses: actions/cache@v4
       if: |
         runner.os == 'Windows'
       with: