diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 1c27745..71378c4 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -45,7 +45,7 @@ jobs:
         uses: actions/checkout@v6
 
       - name: Cache CMake build (FetchContent)
-        uses: actions/cache@v5
+        uses: actions/cache@v6
         with:
           path: build/_deps
           key: ${{ runner.os }}-${{ matrix.compiler }}-deps-${{ hashFiles('CMakeLists.txt') }}
@@ -131,7 +131,7 @@ jobs:
         uses: actions/checkout@v6
 
       - name: Cache CMake build (FetchContent)
-        uses: actions/cache@v5
+        uses: actions/cache@v6
         with:
           path: build/_deps
           key: ubuntu-gcc-full-deps-${{ hashFiles('CMakeLists.txt') }}
@@ -181,7 +181,7 @@ jobs:
         uses: actions/checkout@v6
 
       - name: Cache CMake build (FetchContent)
-        uses: actions/cache@v5
+        uses: actions/cache@v6
         with:
           path: build/_deps
           key: ubuntu-gcc-cov-deps-${{ hashFiles('CMakeLists.txt') }}
@@ -298,7 +298,7 @@ jobs:
         uses: actions/checkout@v6
 
       - name: Cache CMake build (FetchContent)
-        uses: actions/cache@v5
+        uses: actions/cache@v6
         with:
           path: build/_deps
           key: ubuntu-${{ matrix.compiler }}-${{ matrix.sanitizer }}-deps-${{ hashFiles('CMakeLists.txt') }}