diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 7c0a228..a8509c3 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -9,7 +9,7 @@ jobs:
   test:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
 
       - uses: dtolnay/rust-toolchain@stable
         with:
diff --git a/.github/workflows/coverage.yml b/.github/workflows/coverage.yml
index d7c84e4..1d0a03b 100644
--- a/.github/workflows/coverage.yml
+++ b/.github/workflows/coverage.yml
@@ -28,7 +28,7 @@ jobs:
     name: Enforce coverage
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
 
       - uses: dtolnay/rust-toolchain@stable
 
diff --git a/.github/workflows/dependency-scan.yml b/.github/workflows/dependency-scan.yml
index 4bb2e31..65716e3 100644
--- a/.github/workflows/dependency-scan.yml
+++ b/.github/workflows/dependency-scan.yml
@@ -42,7 +42,7 @@ jobs:
     name: cargo-audit
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
       - name: Audit dependencies
         uses: rustsec/audit-check@v2
         with:
@@ -55,7 +55,7 @@ jobs:
     name: cargo-deny advisories
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
       - uses: EmbarkStudios/cargo-deny-action@v2
         with:
           command: check advisories
diff --git a/.github/workflows/deploy-mainnet.yml b/.github/workflows/deploy-mainnet.yml
index 34a08d9..69b9f83 100644
--- a/.github/workflows/deploy-mainnet.yml
+++ b/.github/workflows/deploy-mainnet.yml
@@ -11,7 +11,7 @@ jobs:
     runs-on: ubuntu-latest
     environment: mainnet
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
 
       - name: Install Rust
         uses: dtolnay/rust-toolchain@stable
diff --git a/.github/workflows/deploy-testnet.yml b/.github/workflows/deploy-testnet.yml
index 472f3c5..1a07abe 100644
--- a/.github/workflows/deploy-testnet.yml
+++ b/.github/workflows/deploy-testnet.yml
@@ -10,7 +10,7 @@ jobs:
     runs-on: ubuntu-latest
     environment: testnet
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
 
       - uses: dtolnay/rust-toolchain@stable
         with:
diff --git a/.github/workflows/mutation.yml b/.github/workflows/mutation.yml
index 94feec4..d3829c1 100644
--- a/.github/workflows/mutation.yml
+++ b/.github/workflows/mutation.yml
@@ -28,7 +28,7 @@ jobs:
     name: cargo-mutants
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
         with:
           # Need the base ref to compute the PR diff for incremental runs.
           fetch-depth: 0
diff --git a/.github/workflows/openapi-validate.yml b/.github/workflows/openapi-validate.yml
index 2c58204..9baa996 100644
--- a/.github/workflows/openapi-validate.yml
+++ b/.github/workflows/openapi-validate.yml
@@ -12,7 +12,7 @@ jobs:
   validate:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
 
       - name: Install Rust
         uses: dtolnay/rust-toolchain@stable
diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index 2ace1b2..9fbc3f6 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -15,7 +15,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
         with:
           fetch-depth: 0
 
diff --git a/.github/workflows/security.yml b/.github/workflows/security.yml
index 0f32af0..a97120e 100644
--- a/.github/workflows/security.yml
+++ b/.github/workflows/security.yml
@@ -40,7 +40,7 @@ jobs:
           - advisories
           - bans licenses sources
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
       - name: Run cargo-deny
         uses: EmbarkStudios/cargo-deny-action@v2
         with:
@@ -53,7 +53,7 @@ jobs:
     name: Secret scan (gitleaks)
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
         with:
           fetch-depth: 0
       - name: Run gitleaks
@@ -68,7 +68,7 @@ jobs:
     name: Static analysis (clippy)
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
       - uses: dtolnay/rust-toolchain@stable
         with:
           components: clippy
diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 343d11b..7268c3c 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -9,7 +9,7 @@ jobs:
   test:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
 
       - uses: dtolnay/rust-toolchain@stable