diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 0e076df..63a3a7f 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -115,19 +115,19 @@ jobs:
         sudo apt-get install -y pkg-config libopenblas-dev liblapack-dev
 
     - name: Cache cargo registry
-      uses: actions/cache@v4
+      uses: actions/cache@v5
       with:
         path: ~/.cargo/registry
         key: ${{ runner.os }}-cargo-registry-${{ hashFiles('**/Cargo.lock') }}
 
     - name: Cache cargo index
-      uses: actions/cache@v4
+      uses: actions/cache@v5
       with:
         path: ~/.cargo/git
         key: ${{ runner.os }}-cargo-index-${{ hashFiles('**/Cargo.lock') }}
 
     - name: Cache cargo build
-      uses: actions/cache@v4
+      uses: actions/cache@v5
       with:
         path: target
         key: ${{ runner.os }}-cargo-build-target-${{ hashFiles('**/Cargo.lock') }}-${{ github.job }}-${{ strategy.job-index }}
@@ -157,19 +157,19 @@ jobs:
         sudo apt-get install -y pkg-config libopenblas-dev liblapack-dev
 
     - name: Cache cargo registry
-      uses: actions/cache@v4
+      uses: actions/cache@v5
       with:
         path: ~/.cargo/registry
         key: ${{ runner.os }}-cargo-registry-${{ hashFiles('**/Cargo.lock') }}
 
     - name: Cache cargo index
-      uses: actions/cache@v4
+      uses: actions/cache@v5
       with:
         path: ~/.cargo/git
         key: ${{ runner.os }}-cargo-index-${{ hashFiles('**/Cargo.lock') }}
 
     - name: Cache cargo build
-      uses: actions/cache@v4
+      uses: actions/cache@v5
       with:
         path: target
         key: ${{ runner.os }}-cargo-build-target-${{ hashFiles('**/Cargo.lock') }}-${{ github.job }}-${{ strategy.job-index }}
@@ -229,25 +229,25 @@ jobs:
       uses: taiki-e/install-action@just
 
     - name: Cache cargo registry
-      uses: actions/cache@v4
+      uses: actions/cache@v5
       with:
         path: ~/.cargo/registry
         key: ${{ runner.os }}-cargo-registry-${{ hashFiles('**/Cargo.lock') }}
 
     - name: Cache cargo index
-      uses: actions/cache@v4
+      uses: actions/cache@v5
       with:
         path: ~/.cargo/git
         key: ${{ runner.os }}-cargo-index-${{ hashFiles('**/Cargo.lock') }}
 
     - name: Cache cargo build
-      uses: actions/cache@v4
+      uses: actions/cache@v5
       with:
         path: target
         key: ${{ runner.os }}-cargo-build-target-${{ hashFiles('**/Cargo.lock') }}-${{ github.job }}
 
     - name: Restore benchmark baseline cache
-      uses: actions/cache/restore@v4
+      uses: actions/cache/restore@v5
       with:
         path: coverage/benchmarks/baseline
         key: ${{ runner.os }}-bench-baseline-${{ github.ref_name }}-${{ github.run_id }}
@@ -313,7 +313,7 @@ jobs:
 
     - name: Save benchmark baseline cache
       if: always()
-      uses: actions/cache/save@v4
+      uses: actions/cache/save@v5
       with:
         path: coverage/benchmarks/baseline
         key: ${{ runner.os }}-bench-baseline-${{ github.ref_name }}-${{ github.run_id }}