diff --git a/.github/workflows/benchmarks.yml b/.github/workflows/benchmarks.yml
index 51b94530..cb57c5f4 100644
--- a/.github/workflows/benchmarks.yml
+++ b/.github/workflows/benchmarks.yml
@@ -10,7 +10,7 @@ jobs:
     steps:
       - uses: actions/checkout@v2
       - run: rustup toolchain update nightly && rustup default nightly
-      - uses: Swatinem/rust-cache@v1
+      - uses: Swatinem/rust-cache@v2
       - name: run benchmark
         run: cargo +nightly bench | tee benchmark_output.txt
       - name: store benchmark result
diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index ba64700b..612dcbb2 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -14,7 +14,7 @@ jobs:
           toolchain: stable
           override: true
           components: rustfmt, clippy
-      - uses: Swatinem/rust-cache@v1
+      - uses: Swatinem/rust-cache@v2
       - uses: actions-rs/cargo@v1
         name: formatting check
         with:
@@ -50,7 +50,7 @@ jobs:
           profile: minimal
           toolchain: ${{ matrix.toolchain }}
           override: true
-      - uses: Swatinem/rust-cache@v1
+      - uses: Swatinem/rust-cache@v2
       - uses: actions-rs/cargo@v1
         name: thumbv6m-none-eabi check
         if: ${{ matrix.use_std == 'y' }}
@@ -87,7 +87,7 @@ jobs:
           profile: minimal
           toolchain: ${{ matrix.toolchain }}
           override: true
-      - uses: Swatinem/rust-cache@v1
+      - uses: Swatinem/rust-cache@v2
       - uses: actions-rs/cargo@v1
         name: thumbv6m-none-eabi build
         if: ${{ matrix.use_std == 'y' }}
@@ -119,7 +119,7 @@ jobs:
           profile: minimal
           toolchain: ${{ matrix.toolchain }}
           override: true
-      - uses: Swatinem/rust-cache@v1
+      - uses: Swatinem/rust-cache@v2
       - uses: actions-rs/cargo@v1
         name: std test all
         with:
@@ -139,7 +139,7 @@ jobs:
           profile: minimal
           toolchain: ${{ matrix.toolchain }}
           override: true
-      - uses: Swatinem/rust-cache@v1
+      - uses: Swatinem/rust-cache@v2
       - uses: actions-rs/cargo@v1
         name: std doc check
         env:
diff --git a/.github/workflows/rustdoc.yml b/.github/workflows/rustdoc.yml
index 9161c06e..d72d70ba 100644
--- a/.github/workflows/rustdoc.yml
+++ b/.github/workflows/rustdoc.yml
@@ -18,7 +18,7 @@ jobs:
           toolchain: stable
           override: true
 
-      - uses: Swatinem/rust-cache@v1
+      - uses: Swatinem/rust-cache@v2
 
       - uses: actions-rs/cargo@v1
         name: build docs