diff --git a/filtermail/.github/workflows/ci.yml b/filtermail/.github/workflows/ci.yml
index 2eb83478..450307a3 100644
--- a/filtermail/.github/workflows/ci.yml
+++ b/filtermail/.github/workflows/ci.yml
@@ -16,7 +16,7 @@ jobs:
     name: Check Formatting
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
+      - uses: actions/checkout@8e8c483db84b4bee98b60c0593521ed34d9990e8 # v6.0.1
         with:
           persist-credentials: false
       - uses: dtolnay/rust-toolchain@6d653acede28d24f02e3cd41383119e8b1b35921 # master
@@ -33,7 +33,7 @@ jobs:
     name: Check Unused Dependencies
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
+      - uses: actions/checkout@8e8c483db84b4bee98b60c0593521ed34d9990e8 # v6.0.1
         with:
           persist-credentials: false
       - uses: bnjbvr/cargo-machete@7959c845782fed02ee69303126d4a12d64f1db18 # v0.9.1
@@ -47,7 +47,7 @@ jobs:
         toolchain: ["stable", "beta"]
     continue-on-error: ${{ matrix.toolchain == 'beta' }}
     steps:
-      - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
+      - uses: actions/checkout@8e8c483db84b4bee98b60c0593521ed34d9990e8 # v6.0.1
         with:
           persist-credentials: false
       - uses: dtolnay/rust-toolchain@6d653acede28d24f02e3cd41383119e8b1b35921 # master
@@ -67,7 +67,7 @@ jobs:
       matrix:
         os: [ubuntu-latest, windows-latest, macos-latest]
     steps:
-      - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
+      - uses: actions/checkout@8e8c483db84b4bee98b60c0593521ed34d9990e8 # v6.0.1
         with:
           persist-credentials: false
       - uses: dtolnay/rust-toolchain@6d653acede28d24f02e3cd41383119e8b1b35921 # master