diff --git a/.github/workflows/elixir.yml b/.github/workflows/elixir.yml
index 8472b2a..8f0ed0f 100644
--- a/.github/workflows/elixir.yml
+++ b/.github/workflows/elixir.yml
@@ -46,19 +46,19 @@ jobs:
           otp-version: ${{matrix.otp}}
 
       - name: Restore dependencies cache
-        uses: actions/cache@v3
+        uses: actions/cache@v4
         with:
           path: deps
           key: ${{ runner.os }}-${{ matrix.otp }}-${{ matrix.elixir }}-mix-${{ hashFiles('**/mix.lock') }}
 
       - name: Restore PLT cache
-        uses: actions/cache@v3
+        uses: actions/cache@v4
         with:
           path: priv/plts
           key: ${{ runner.os }}-${{ matrix.otp }}-${{ matrix.elixir }}-mix-${{ hashFiles('**/mix.lock') }}
 
       - name: Restore conformance-test-runner
-        uses: actions/cache@v3
+        uses: actions/cache@v4
         id: compile-conformance-test-runner
         with:
           path: conformance-bin
diff --git a/.github/workflows/mutation_testing.yml b/.github/workflows/mutation_testing.yml
index c52518d..4dc05ea 100644
--- a/.github/workflows/mutation_testing.yml
+++ b/.github/workflows/mutation_testing.yml
@@ -30,7 +30,7 @@ jobs:
           otp-version: ${{matrix.otp}}
 
       - name: Restore dependencies cache
-        uses: actions/cache@v3
+        uses: actions/cache@v4
         with:
           path: deps
           key: ${{ runner.os }}-${{ matrix.otp }}-${{ matrix.elixir }}-mix-${{ hashFiles('**/mix.lock') }}