diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 4966c8b..2c60554 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -12,8 +12,9 @@ jobs:
     runs-on: ${{ matrix.os }}
     steps:
       - uses: actions/checkout@v2
-      - name: Cache toolchain
-        uses: Swatinem/rust-cache@v1
+      - uses: Swatinem/rust-cache@v2
+        with:
+          save-if: ${{ github.ref == 'refs/heads/main' }}
       - name: Setup Rust toolchain
         uses: actions-rs/toolchain@v1
         with: