diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index fa93824..cdd13db 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -30,7 +30,7 @@ jobs:
           - rust: "1.65" # MSRV
             flags: "--all-features"
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
       - uses: dtolnay/rust-toolchain@master
         with:
           toolchain: ${{ matrix.rust }}
@@ -67,7 +67,7 @@ jobs:
     runs-on: ubuntu-latest
     timeout-minutes: 30
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
       - uses: dtolnay/rust-toolchain@stable
       - uses: taiki-e/install-action@cargo-hack
       - uses: Swatinem/rust-cache@v2
@@ -85,7 +85,7 @@ jobs:
   #   runs-on: ubuntu-latest
   #   timeout-minutes: 30
   #   steps:
-  #     - uses: actions/checkout@v4
+  #     - uses: actions/checkout@v6
   #     - uses: dtolnay/rust-toolchain@nightly
   #       with:
   #         components: llvm-tools-preview
@@ -117,7 +117,7 @@ jobs:
     runs-on: ubuntu-latest
     timeout-minutes: 30
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
       - uses: dtolnay/rust-toolchain@clippy
         with:
           toolchain: nightly-2025-02-20 # https://github.com/rust-lang/rust-clippy/issues/14303
@@ -133,7 +133,7 @@ jobs:
     runs-on: ubuntu-latest
     timeout-minutes: 30
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
       - uses: dtolnay/rust-toolchain@nightly
         with:
           components: rust-docs
@@ -149,7 +149,7 @@ jobs:
     runs-on: ubuntu-latest
     timeout-minutes: 30
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
       - uses: dtolnay/rust-toolchain@nightly
         with:
           components: rustfmt
@@ -159,7 +159,7 @@ jobs:
     name: Cargo deny check
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
       - uses: EmbarkStudios/cargo-deny-action@v2
         with:
           command: check all
diff --git a/.github/workflows/issue_tracker.yml b/.github/workflows/issue_tracker.yml
index 0546133..beacf82 100644
--- a/.github/workflows/issue_tracker.yml
+++ b/.github/workflows/issue_tracker.yml
@@ -10,7 +10,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
       - name: Cache Python dependencies
         uses: actions/cache@v3
         with: