diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index b8f0c0e..e91e444 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -33,7 +33,7 @@ jobs:
           fetch-depth: 0
 
       - name: Rust toolchain
-        uses: dtolnay/rust-toolchain@d8352f6b1d2e870bc5716e7a6d9b65c4cc244a1a
+        uses: dtolnay/rust-toolchain@21dc36fb71dd22e3317045c0c31a3f4249868b17
         with:
           toolchain: "1.73.0"
           components: rustfmt
@@ -95,7 +95,7 @@ jobs:
           python-version: ${{ matrix.python-version }}
           allow-prereleases: ${{ matrix.allow-prereleases }}
 
-      - uses: dtolnay/rust-toolchain@d8352f6b1d2e870bc5716e7a6d9b65c4cc244a1a
+      - uses: dtolnay/rust-toolchain@21dc36fb71dd22e3317045c0c31a3f4249868b17
         with:
           toolchain: "1.73.0"
 
diff --git a/.github/workflows/publish.yaml b/.github/workflows/publish.yaml
index 06bd463..df1abd7 100644
--- a/.github/workflows/publish.yaml
+++ b/.github/workflows/publish.yaml
@@ -158,7 +158,7 @@ jobs:
         with:
           ref: ${{ github.head_ref }}
 
-      - uses: dtolnay/rust-toolchain@d8352f6b1d2e870bc5716e7a6d9b65c4cc244a1a
+      - uses: dtolnay/rust-toolchain@21dc36fb71dd22e3317045c0c31a3f4249868b17
         with:
           toolchain: "1.73.0"