diff --git a/.github/workflows/builds.yml b/.github/workflows/builds.yml
index ad21a85a..c4d99a10 100644
--- a/.github/workflows/builds.yml
+++ b/.github/workflows/builds.yml
@@ -126,7 +126,7 @@ jobs:
 
       # ---------- Rust toolchain ----------
       - name: Install Rust (stable)
-        uses: dtolnay/rust-toolchain@2c7215f132e9ebf062739d9130488b56d53c060c
+        uses: dtolnay/rust-toolchain@6c977a6ca4077a0ceb28ffbe03f59d46e9ac8772
         with:
           toolchain: stable
 
diff --git a/.github/workflows/cpp-tools.yml b/.github/workflows/cpp-tools.yml
index 439f5a8b..5ba316bc 100644
--- a/.github/workflows/cpp-tools.yml
+++ b/.github/workflows/cpp-tools.yml
@@ -96,7 +96,7 @@ jobs:
           run-clang-tidy --help >/dev/null
 
       - name: Install Rust (stable)
-        uses: dtolnay/rust-toolchain@2c7215f132e9ebf062739d9130488b56d53c060c
+        uses: dtolnay/rust-toolchain@6c977a6ca4077a0ceb28ffbe03f59d46e9ac8772
         with:
           toolchain: stable
 
diff --git a/.github/workflows/make-release.yml b/.github/workflows/make-release.yml
index afc79446..32541653 100644
--- a/.github/workflows/make-release.yml
+++ b/.github/workflows/make-release.yml
@@ -128,7 +128,7 @@ jobs:
 
       # ---------- Rust toolchain ----------
       - name: Install Rust (stable)
-        uses: dtolnay/rust-toolchain@2c7215f132e9ebf062739d9130488b56d53c060c
+        uses: dtolnay/rust-toolchain@6c977a6ca4077a0ceb28ffbe03f59d46e9ac8772
         with:
           toolchain: stable
 
diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index 94b590a0..8b4af40f 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -232,7 +232,7 @@ jobs:
 
       # ---------- Rust toolchain ----------
       - name: Install Rust (stable)
-        uses: dtolnay/rust-toolchain@2c7215f132e9ebf062739d9130488b56d53c060c
+        uses: dtolnay/rust-toolchain@6c977a6ca4077a0ceb28ffbe03f59d46e9ac8772
         with:
           toolchain: stable
 
@@ -505,7 +505,7 @@ jobs:
 
       # ---------- Rust toolchain ----------
       - name: Install Rust (stable)
-        uses: dtolnay/rust-toolchain@2c7215f132e9ebf062739d9130488b56d53c060c
+        uses: dtolnay/rust-toolchain@6c977a6ca4077a0ceb28ffbe03f59d46e9ac8772
         with:
           toolchain: stable