diff --git a/.github/workflows/benchmark.yml b/.github/workflows/benchmark.yml
index 1924bb1..1463104 100644
--- a/.github/workflows/benchmark.yml
+++ b/.github/workflows/benchmark.yml
@@ -18,10 +18,10 @@ jobs:
       - uses: actions/checkout@v4
 
       - name: Install Rust toolchain
-        uses: dtolnay/rust-toolchain@stable
+        uses: dtolnay/rust-toolchain@29eef336d9b2848a0b548edc03f92a220660cdb8 # stable
 
       - name: Install sccache
-        uses: mozilla-actions/sccache-action@v0.0.6
+        uses: mozilla-actions/sccache-action@9e326ebed976843c9932b3aa0e021c6f50310eb4 # v0.0.6
 
       - name: Cache Cargo registry
         uses: actions/cache@v4