diff --git a/.github/workflows/ci-optimized.yml b/.github/workflows/ci-optimized.yml
index 29b1739..cb4fdf6 100644
--- a/.github/workflows/ci-optimized.yml
+++ b/.github/workflows/ci-optimized.yml
@@ -94,7 +94,7 @@ jobs:
     steps:
       - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6
 
-      - uses: dtolnay/rust-toolchain@3c5f7ea28cd621ae0bf5283f0e981fb97b8a7af9 # master
+      - uses: dtolnay/rust-toolchain@29eef336d9b2848a0b548edc03f92a220660cdb8 # master
         with:
           toolchain: ${{ matrix.rust }}
 
diff --git a/.github/workflows/fuzz.yml b/.github/workflows/fuzz.yml
index b14a016..93dbdec 100644
--- a/.github/workflows/fuzz.yml
+++ b/.github/workflows/fuzz.yml
@@ -26,7 +26,7 @@ jobs:
         uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6
 
       - name: Install Rust (nightly for fuzzing)
-        uses: dtolnay/rust-toolchain@5b842231ba77f5c045dba54ac5560fed2db780e2 # nightly
+        uses: dtolnay/rust-toolchain@29eef336d9b2848a0b548edc03f92a220660cdb8 # nightly
 
       - name: Install cargo-fuzz
         run: cargo install cargo-fuzz