diff --git a/.github/workflows/check.yml b/.github/workflows/check.yml
index 3e0ec4b..c3455c7 100644
--- a/.github/workflows/check.yml
+++ b/.github/workflows/check.yml
@@ -25,7 +25,7 @@ jobs:
         with:
           persist-credentials: false
       - name: install nightly
-        uses: dtolnay/rust-toolchain@e97e2d8cc328f1b50210efc529dca0028893a2d9 # branch=master
+        uses: dtolnay/rust-toolchain@6c977a6ca4077a0ceb28ffbe03f59d46e9ac8772 # branch=master
         with:
           toolchain: nightly
           components: rustfmt
@@ -43,7 +43,7 @@ jobs:
         with:
           persist-credentials: false
       - name: install stable
-        uses: dtolnay/rust-toolchain@e97e2d8cc328f1b50210efc529dca0028893a2d9 # branch=master
+        uses: dtolnay/rust-toolchain@6c977a6ca4077a0ceb28ffbe03f59d46e9ac8772 # branch=master
         with:
           toolchain: stable
           components: clippy
@@ -61,7 +61,7 @@ jobs:
         with:
           persist-credentials: false
       - name: install stable
-        uses: dtolnay/rust-toolchain@e97e2d8cc328f1b50210efc529dca0028893a2d9 # branch=master
+        uses: dtolnay/rust-toolchain@6c977a6ca4077a0ceb28ffbe03f59d46e9ac8772 # branch=master
         with:
           toolchain: stable
       - name: cargo test --locked