diff --git a/.github/workflows/cargo-update-pr.yml b/.github/workflows/cargo-update-pr.yml
index 0338581..d331a1a 100644
--- a/.github/workflows/cargo-update-pr.yml
+++ b/.github/workflows/cargo-update-pr.yml
@@ -48,7 +48,7 @@ jobs:
       - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
         with:
           persist-credentials: false
-      - uses: dtolnay/rust-toolchain@master
+      - uses: dtolnay/rust-toolchain@6c977a6ca4077a0ceb28ffbe03f59d46e9ac8772
         with:
           toolchain: ${{ inputs.rust-toolchain }}
 
diff --git a/.github/workflows/deny.yml b/.github/workflows/deny.yml
index d33fa49..3831e68 100644
--- a/.github/workflows/deny.yml
+++ b/.github/workflows/deny.yml
@@ -28,7 +28,7 @@ jobs:
       - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
         with:
           persist-credentials: false
-      - uses: dtolnay/rust-toolchain@master
+      - uses: dtolnay/rust-toolchain@6c977a6ca4077a0ceb28ffbe03f59d46e9ac8772
         with:
           toolchain: ${{ inputs.rust-toolchain }}
       - uses: EmbarkStudios/cargo-deny-action@91bf2b620e09e18d6eb78b92e7861937469acedb # v2.0.17