diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
index fad2278cd..ef2df7275 100644
--- a/.github/workflows/ci.yaml
+++ b/.github/workflows/ci.yaml
@@ -8,6 +8,10 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v4
+      - uses: actions/cache@v4
+        with:
+          path: ~/.cargo/registry/index
+          key: cargo-git-index
       - uses: dtolnay/rust-toolchain@1.63.0
       - run: cp ci/compat-Cargo.lock ./Cargo.lock
       - run: cargo check --verbose --locked
diff --git a/.github/workflows/pr.yaml b/.github/workflows/pr.yaml
index 88cddd8b7..3e9d99fca 100644
--- a/.github/workflows/pr.yaml
+++ b/.github/workflows/pr.yaml
@@ -12,6 +12,10 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v4
+      - uses: actions/cache@v4
+        with:
+          path: ~/.cargo/registry/index
+          key: cargo-git-index
       - uses: dtolnay/rust-toolchain@1.63.0
       - run: cp ci/compat-Cargo.lock ./Cargo.lock
       - run: cargo check --verbose --locked