diff --git a/.github/workflows/auto-review.yaml b/.github/workflows/auto-review.yaml
index 915b4c4..d25b5b0 100644
--- a/.github/workflows/auto-review.yaml
+++ b/.github/workflows/auto-review.yaml
@@ -34,7 +34,7 @@ jobs:
 
         steps:
             -   name: "Checkout"
-                uses: "actions/checkout@v5"
+                uses: "actions/checkout@v6"
 
             -   name: "Setup PHP"
                 uses: "shivammathur/setup-php@v2"
diff --git a/.github/workflows/docs.yaml b/.github/workflows/docs.yaml
index ba77719..2460f2b 100644
--- a/.github/workflows/docs.yaml
+++ b/.github/workflows/docs.yaml
@@ -15,10 +15,10 @@ jobs:
         timeout-minutes: 1
         steps:
             -   name: "Checkout repository"
-                uses: "actions/checkout@v5"
+                uses: "actions/checkout@v6"
 
             -   name: "Check Markdown formatting"
-                uses: "DavidAnson/markdownlint-cli2-action@v20.0.0"
+                uses: "DavidAnson/markdownlint-cli2-action@v22.0.0"
                 with:
                     globs: "*.md|docs/**/*.md"
 
@@ -28,17 +28,17 @@ jobs:
         timeout-minutes: 1
         steps:
             -   name: "Checkout repository"
-                uses: "actions/checkout@v5"
+                uses: "actions/checkout@v6"
 
             -   name: "Restore lychee cache"
-                uses: "actions/cache@v4"
+                uses: "actions/cache@v5"
                 with:
                     path: ".lycheecache"
                     key: "cache-lychee-${{ github.sha }}"
                     restore-keys: cache-lychee-
 
             -   name: "Run Lychee"
-                uses: "lycheeverse/lychee-action@v2.6.1"
+                uses: "lycheeverse/lychee-action@v2.7.0"
                 with:
                     # To keep in sync with Makefile#lychee
                     args: "--verbose --no-progress '*.md' 'docs/**/*.md' --cache --max-cache-age 1d ."
diff --git a/.github/workflows/tests.yaml b/.github/workflows/tests.yaml
index e257f3e..70b1999 100644
--- a/.github/workflows/tests.yaml
+++ b/.github/workflows/tests.yaml
@@ -21,7 +21,7 @@ jobs:
 
         steps:
             -   name: "Check out repository code"
-                uses: "actions/checkout@v5"
+                uses: "actions/checkout@v6"
 
             -   name: "Setup PHP"
                 uses: "shivammathur/setup-php@v2"
@@ -55,7 +55,7 @@ jobs:
 
         steps:
             -   name: "Check out repository code"
-                uses: "actions/checkout@v5"
+                uses: "actions/checkout@v6"
 
             -   name: "Setup PHP"
                 uses: "shivammathur/setup-php@v2"
@@ -85,7 +85,7 @@ jobs:
 
         steps:
             -   name: "Check out repository code"
-                uses: "actions/checkout@v5"
+                uses: "actions/checkout@v6"
 
             -   name: "Setup PHP"
                 uses: "shivammathur/setup-php@v2"