diff --git a/.github/workflows/aead-stream.yml b/.github/workflows/aead-stream.yml
index 4318e260..be896da7 100644
--- a/.github/workflows/aead-stream.yml
+++ b/.github/workflows/aead-stream.yml
@@ -34,7 +34,7 @@ jobs:
           - thumbv7em-none-eabi
           - wasm32-unknown-unknown
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
       - uses: dtolnay/rust-toolchain@master
         with:
           toolchain: ${{ matrix.rust }}
@@ -60,7 +60,7 @@ jobs:
           - target: x86_64-unknown-linux-gnu
             rust: stable
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
       - uses: dtolnay/rust-toolchain@master
         with:
           toolchain: ${{ matrix.rust }}
diff --git a/.github/workflows/aes-gcm-siv.yml b/.github/workflows/aes-gcm-siv.yml
index 81feb35b..08bdcaf7 100644
--- a/.github/workflows/aes-gcm-siv.yml
+++ b/.github/workflows/aes-gcm-siv.yml
@@ -35,7 +35,7 @@ jobs:
           - thumbv7em-none-eabi
           - wasm32-unknown-unknown
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
       - uses: dtolnay/rust-toolchain@master
         with:
           toolchain: ${{ matrix.rust }}
@@ -61,7 +61,7 @@ jobs:
           - target: x86_64-unknown-linux-gnu
             rust: stable
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
       - uses: dtolnay/rust-toolchain@master
         with:
           toolchain: ${{ matrix.rust }}
diff --git a/.github/workflows/aes-gcm.yml b/.github/workflows/aes-gcm.yml
index eea761e8..479dc808 100644
--- a/.github/workflows/aes-gcm.yml
+++ b/.github/workflows/aes-gcm.yml
@@ -35,7 +35,7 @@ jobs:
           - thumbv7em-none-eabi
           - wasm32-unknown-unknown
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
       - uses: dtolnay/rust-toolchain@master
         with:
           toolchain: ${{ matrix.rust }}
@@ -61,7 +61,7 @@ jobs:
           - target: x86_64-unknown-linux-gnu
             rust: stable
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
       - uses: dtolnay/rust-toolchain@master
         with:
           toolchain: ${{ matrix.rust }}
diff --git a/.github/workflows/aes-siv.yml b/.github/workflows/aes-siv.yml
index 30d96d56..48167ddb 100644
--- a/.github/workflows/aes-siv.yml
+++ b/.github/workflows/aes-siv.yml
@@ -35,7 +35,7 @@ jobs:
           - thumbv7em-none-eabi
           - wasm32-unknown-unknown
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
       - uses: dtolnay/rust-toolchain@master
         with:
           toolchain: ${{ matrix.rust }}
@@ -50,7 +50,7 @@ jobs:
           - 1.85.0 # MSRV
           - stable
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
       - uses: dtolnay/rust-toolchain@master
         with:
           toolchain: ${{ matrix.rust }}
diff --git a/.github/workflows/ascon-aead128.yml b/.github/workflows/ascon-aead128.yml
index aeb2dbac..37aefcf0 100644
--- a/.github/workflows/ascon-aead128.yml
+++ b/.github/workflows/ascon-aead128.yml
@@ -35,7 +35,7 @@ jobs:
           - thumbv7em-none-eabi
           - wasm32-unknown-unknown
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
       - uses: dtolnay/rust-toolchain@master
         with:
           toolchain: ${{ matrix.rust }}
@@ -61,7 +61,7 @@ jobs:
           - target: x86_64-unknown-linux-gnu
             rust: stable
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
       - uses: dtolnay/rust-toolchain@master
         with:
           toolchain: ${{ matrix.rust }}
diff --git a/.github/workflows/belt-dwp.yml b/.github/workflows/belt-dwp.yml
index 90e84f9e..1c43e249 100644
--- a/.github/workflows/belt-dwp.yml
+++ b/.github/workflows/belt-dwp.yml
@@ -35,7 +35,7 @@ jobs:
           - thumbv7em-none-eabi
           - wasm32-unknown-unknown
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
       - uses: dtolnay/rust-toolchain@master
         with:
           toolchain: ${{ matrix.rust }}
@@ -45,7 +45,7 @@ jobs:
   benches:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
       - uses: dtolnay/rust-toolchain@master
         with:
           toolchain: nightly-2025-07-31
@@ -70,7 +70,7 @@ jobs:
           - target: x86_64-unknown-linux-gnu
             rust: stable
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
       - uses: dtolnay/rust-toolchain@master
         with:
           toolchain: ${{ matrix.rust }}
diff --git a/.github/workflows/benches.yml b/.github/workflows/benches.yml
index 6132508b..64bd8bb4 100644
--- a/.github/workflows/benches.yml
+++ b/.github/workflows/benches.yml
@@ -32,7 +32,7 @@ jobs:
           - 1.85.0 # MSRV
           - stable
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
       - uses: dtolnay/rust-toolchain@master
         with:
           toolchain: ${{ matrix.rust }}
diff --git a/.github/workflows/ccm.yml b/.github/workflows/ccm.yml
index 9982df48..b72a72e1 100644
--- a/.github/workflows/ccm.yml
+++ b/.github/workflows/ccm.yml
@@ -34,7 +34,7 @@ jobs:
           - thumbv7em-none-eabi
           - wasm32-unknown-unknown
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
       - uses: dtolnay/rust-toolchain@master
         with:
           toolchain: ${{ matrix.rust }}
@@ -60,7 +60,7 @@ jobs:
           - target: x86_64-unknown-linux-gnu
             rust: stable
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
       - uses: dtolnay/rust-toolchain@master
         with:
           toolchain: ${{ matrix.rust }}
diff --git a/.github/workflows/chacha20poly1305.yml b/.github/workflows/chacha20poly1305.yml
index 8eb3554f..4e1e915e 100644
--- a/.github/workflows/chacha20poly1305.yml
+++ b/.github/workflows/chacha20poly1305.yml
@@ -35,7 +35,7 @@ jobs:
           - thumbv7em-none-eabi
           - wasm32-unknown-unknown
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
       - uses: dtolnay/rust-toolchain@master
         with:
           toolchain: ${{ matrix.rust }}
@@ -62,7 +62,7 @@ jobs:
           - target: x86_64-unknown-linux-gnu
             rust: stable
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
       - uses: dtolnay/rust-toolchain@master
         with:
           toolchain: ${{ matrix.rust }}
diff --git a/.github/workflows/deoxys.yml b/.github/workflows/deoxys.yml
index ea972479..fa4eddf9 100644
--- a/.github/workflows/deoxys.yml
+++ b/.github/workflows/deoxys.yml
@@ -35,7 +35,7 @@ jobs:
           - thumbv7em-none-eabi
           - wasm32-unknown-unknown
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
       - uses: dtolnay/rust-toolchain@master
         with:
           toolchain: ${{ matrix.rust }}
@@ -50,7 +50,7 @@ jobs:
           - 1.85.0 # MSRV
           - stable
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
       - uses: dtolnay/rust-toolchain@master
         with:
           toolchain: ${{ matrix.rust }}
diff --git a/.github/workflows/eax.yml b/.github/workflows/eax.yml
index 48f97738..5121be15 100644
--- a/.github/workflows/eax.yml
+++ b/.github/workflows/eax.yml
@@ -34,7 +34,7 @@ jobs:
           - thumbv7em-none-eabi
           - wasm32-unknown-unknown
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
       - uses: dtolnay/rust-toolchain@master
         with:
           toolchain: ${{ matrix.rust }}
@@ -49,7 +49,7 @@ jobs:
           - 1.85.0 # MSRV
           - stable
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
       - uses: dtolnay/rust-toolchain@master
         with:
           toolchain: ${{ matrix.rust }}
diff --git a/.github/workflows/mgm.yml b/.github/workflows/mgm.yml
index 3d662067..315796c0 100644
--- a/.github/workflows/mgm.yml
+++ b/.github/workflows/mgm.yml
@@ -34,7 +34,7 @@ jobs:
           - thumbv7em-none-eabi
           - wasm32-unknown-unknown
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
       - uses: dtolnay/rust-toolchain@master
         with:
           toolchain: ${{ matrix.rust }}
@@ -49,7 +49,7 @@ jobs:
           - 1.81.0 # MSRV
           - stable
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
       - uses: dtolnay/rust-toolchain@master
         with:
           toolchain: ${{ matrix.rust }}
diff --git a/.github/workflows/ocb3.yml b/.github/workflows/ocb3.yml
index fa649d2d..07f0c0fb 100644
--- a/.github/workflows/ocb3.yml
+++ b/.github/workflows/ocb3.yml
@@ -35,7 +35,7 @@ jobs:
           - thumbv7em-none-eabi
           - wasm32-unknown-unknown
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
       - uses: dtolnay/rust-toolchain@master
         with:
           toolchain: ${{ matrix.rust }}
@@ -61,7 +61,7 @@ jobs:
           - target: x86_64-unknown-linux-gnu
             rust: stable
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
       - uses: dtolnay/rust-toolchain@master
         with:
           toolchain: ${{ matrix.rust }}
diff --git a/.github/workflows/security-audit.yml b/.github/workflows/security-audit.yml
index eceda37e..566813e8 100644
--- a/.github/workflows/security-audit.yml
+++ b/.github/workflows/security-audit.yml
@@ -15,7 +15,7 @@ jobs:
     name: Security Audit
     runs-on: ubuntu-24.04
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
       - name: Cache cargo bin
         uses: actions/cache@v4
         with:
diff --git a/.github/workflows/workspace.yml b/.github/workflows/workspace.yml
index 190e66b7..b3b56663 100644
--- a/.github/workflows/workspace.yml
+++ b/.github/workflows/workspace.yml
@@ -21,7 +21,7 @@ jobs:
   rustfmt:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
       - uses: dtolnay/rust-toolchain@master
         with:
           toolchain: stable
@@ -30,7 +30,7 @@ jobs:
   clippy:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
       - uses: dtolnay/rust-toolchain@master
         with:
           toolchain: 1.85.0
@@ -40,5 +40,5 @@ jobs:
   typos:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
       - uses: crate-ci/typos@v1
diff --git a/.github/workflows/xaes-256-gcm.yml b/.github/workflows/xaes-256-gcm.yml
index 5b1e1399..c8aadeda 100644
--- a/.github/workflows/xaes-256-gcm.yml
+++ b/.github/workflows/xaes-256-gcm.yml
@@ -35,7 +35,7 @@ jobs:
           - thumbv7em-none-eabi
           - wasm32-unknown-unknown
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
       - uses: dtolnay/rust-toolchain@master
         with:
           toolchain: ${{ matrix.rust }}
@@ -61,7 +61,7 @@ jobs:
           - target: x86_64-unknown-linux-gnu
             rust: stable
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
       - uses: dtolnay/rust-toolchain@master
         with:
           toolchain: ${{ matrix.rust }}