diff --git a/.github/workflows/codex.yml b/.github/workflows/codex.yml
index 6ca0d57f4..0578cf868 100644
--- a/.github/workflows/codex.yml
+++ b/.github/workflows/codex.yml
@@ -39,7 +39,7 @@ jobs:
       - name: Checkout repository
         uses: actions/checkout@v4
 
-      - uses: dtolnay/rust-toolchain@1.88
+      - uses: dtolnay/rust-toolchain@1.100
         with:
           targets: x86_64-unknown-linux-gnu
           components: clippy
diff --git a/.github/workflows/rust-ci.yml b/.github/workflows/rust-ci.yml
index 97075a1f0..fa3b65850 100644
--- a/.github/workflows/rust-ci.yml
+++ b/.github/workflows/rust-ci.yml
@@ -26,7 +26,7 @@ jobs:
 
     steps:
       - uses: actions/checkout@v4
-      - uses: dtolnay/rust-toolchain@1.88
+      - uses: dtolnay/rust-toolchain@1.100
         with:
           components: rustfmt
       - name: cargo fmt
@@ -64,7 +64,7 @@ jobs:
 
     steps:
       - uses: actions/checkout@v4
-      - uses: dtolnay/rust-toolchain@1.88
+      - uses: dtolnay/rust-toolchain@1.100
         with:
           targets: ${{ matrix.target }}
           components: clippy
diff --git a/.github/workflows/rust-release.yml b/.github/workflows/rust-release.yml
index 8bf7361da..94c8f96ef 100644
--- a/.github/workflows/rust-release.yml
+++ b/.github/workflows/rust-release.yml
@@ -75,7 +75,7 @@ jobs:
 
     steps:
       - uses: actions/checkout@v4
-      - uses: dtolnay/rust-toolchain@1.88
+      - uses: dtolnay/rust-toolchain@1.100
         with:
           targets: ${{ matrix.target }}