diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index c3ea6e4..444368d 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -78,7 +78,7 @@ jobs:
         uses: actions/checkout@df4cb1c069e1874edd31b4311f1884172cec0e10 # v6.0.3
 
       - name: Install Rust nightly with miri
-        uses: dtolnay/rust-toolchain@5b842231ba77f5c045dba54ac5560fed2db780e2 # nightly
+        uses: dtolnay/rust-toolchain@29eef336d9b2848a0b548edc03f92a220660cdb8 # nightly
         with:
           toolchain: nightly
           components: miri
@@ -114,7 +114,7 @@ jobs:
         uses: actions/checkout@df4cb1c069e1874edd31b4311f1884172cec0e10 # v6.0.3
 
       - name: Install Rust nightly
-        uses: dtolnay/rust-toolchain@5b842231ba77f5c045dba54ac5560fed2db780e2 # nightly
+        uses: dtolnay/rust-toolchain@29eef336d9b2848a0b548edc03f92a220660cdb8 # nightly
         with:
           toolchain: nightly
           components: rust-src
diff --git a/.github/workflows/fuzz.yml b/.github/workflows/fuzz.yml
index ed1fadf..a3151bf 100644
--- a/.github/workflows/fuzz.yml
+++ b/.github/workflows/fuzz.yml
@@ -47,7 +47,7 @@ jobs:
         uses: actions/checkout@df4cb1c069e1874edd31b4311f1884172cec0e10 # v6.0.3
 
       - name: Install Rust nightly
-        uses: dtolnay/rust-toolchain@5b842231ba77f5c045dba54ac5560fed2db780e2 # nightly
+        uses: dtolnay/rust-toolchain@29eef336d9b2848a0b548edc03f92a220660cdb8 # nightly
         with:
           # cargo-fuzz needs nightly (`-Z sanitizer`). The channel is derived
           # from the action ref, but this step pins the action to a SHA (for