diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 3245929..e330628 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -25,7 +25,7 @@ jobs:
       - uses: actions/checkout@34e114876b0b11c390a56381ad16ebd13914f8d5  # v4.3.1
 
       - name: Install Rust toolchain
-        uses: dtolnay/rust-toolchain@1.95.0
+        uses: dtolnay/rust-toolchain@1.100.0
         with:
           toolchain: "1.95.0"
           components: rustfmt, clippy, llvm-tools-preview
@@ -45,7 +45,7 @@ jobs:
 
       - name: Install cargo-llvm-cov
         if: matrix.os != 'windows-latest'
-        uses: taiki-e/install-action@c070f87102a1c75b3183910f391c1cb887fe13c8  # v2.77.6
+        uses: taiki-e/install-action@7be9fd86bd1707236395105d6e9329dd1511a7e1  # v2.79.0
         with:
           tool: cargo-llvm-cov@0.8.5
 
@@ -99,7 +99,7 @@ jobs:
       - uses: actions/checkout@34e114876b0b11c390a56381ad16ebd13914f8d5  # v4.3.1
 
       - name: Install Rust toolchain
-        uses: dtolnay/rust-toolchain@1.95.0
+        uses: dtolnay/rust-toolchain@1.100.0
         with:
           toolchain: "1.95.0"
 
@@ -162,7 +162,7 @@ jobs:
       - uses: actions/checkout@34e114876b0b11c390a56381ad16ebd13914f8d5  # v4.3.1
 
       - name: Install Rust toolchain
-        uses: dtolnay/rust-toolchain@1.95.0
+        uses: dtolnay/rust-toolchain@1.100.0
         with:
           toolchain: "1.95.0"
 
@@ -229,7 +229,7 @@ jobs:
       - uses: actions/checkout@34e114876b0b11c390a56381ad16ebd13914f8d5  # v4.3.1
 
       - name: Install Rust toolchain
-        uses: dtolnay/rust-toolchain@1.95.0
+        uses: dtolnay/rust-toolchain@1.100.0
         with:
           toolchain: "1.95.0"
 
diff --git a/.github/workflows/live-tests.yml b/.github/workflows/live-tests.yml
index 590f4b6..6171787 100644
--- a/.github/workflows/live-tests.yml
+++ b/.github/workflows/live-tests.yml
@@ -33,7 +33,7 @@ jobs:
       - uses: actions/checkout@34e114876b0b11c390a56381ad16ebd13914f8d5  # v4.3.1
 
       - name: Install Rust toolchain
-        uses: dtolnay/rust-toolchain@1.95.0
+        uses: dtolnay/rust-toolchain@1.100.0
         with:
           toolchain: "1.95.0"
 
diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index 6efa165..5966cfd 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -65,7 +65,7 @@ jobs:
           profile = "minimal"
           EOF
 
-      - uses: dtolnay/rust-toolchain@1.95.0
+      - uses: dtolnay/rust-toolchain@1.100.0
 
       - uses: actions/setup-python@a26af69be951a213d495a4c3e4e4022e16d87065  # v5.6.0
         with:
@@ -113,7 +113,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@34e114876b0b11c390a56381ad16ebd13914f8d5  # v4.3.1
-      - uses: dtolnay/rust-toolchain@1.95.0
+      - uses: dtolnay/rust-toolchain@1.100.0
       - uses: actions/setup-python@a26af69be951a213d495a4c3e4e4022e16d87065  # v5.6.0
         with:
           python-version: "3.11"
@@ -207,7 +207,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@34e114876b0b11c390a56381ad16ebd13914f8d5  # v4.3.1
-      - uses: dtolnay/rust-toolchain@1.95.0
+      - uses: dtolnay/rust-toolchain@1.100.0
       - name: Package
         run: |
           cargo package -p shadow-diff --allow-dirty
@@ -347,7 +347,7 @@ jobs:
       - uses: actions/checkout@34e114876b0b11c390a56381ad16ebd13914f8d5  # v4.3.1
 
       - name: Install Rust toolchain
-        uses: dtolnay/rust-toolchain@1.95.0
+        uses: dtolnay/rust-toolchain@1.100.0
 
       - name: Publish (or skip if token missing)
         env: