diff --git a/.github/workflows/R-CMD-check.yaml b/.github/workflows/R-CMD-check.yaml
index 30ae3851..83616319 100644
--- a/.github/workflows/R-CMD-check.yaml
+++ b/.github/workflows/R-CMD-check.yaml
@@ -57,7 +57,7 @@ jobs:
       R_KEEP_PKG_SOURCE: yes
 
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v6
 
       - uses: r-lib/actions/setup-r@v2
         with:
diff --git a/.github/workflows/lock.yml b/.github/workflows/lock.yml
index 46bd134d..73308490 100644
--- a/.github/workflows/lock.yml
+++ b/.github/workflows/lock.yml
@@ -5,27 +5,32 @@ on:
   schedule:
     - cron: '0 3 * * 1'
 
+permissions:
+  issues: write
+  pull-requests: write
+
 jobs:
   lock:
     runs-on: ubuntu-latest
     steps:
-      - uses: dessant/lock-threads@v2.0.1
+      - uses: dessant/lock-threads@v6
         with:
           github-token: ${{ github.token }}
-          issue-lock-inactive-days: '180'
+          issue-inactive-days: '180'
           # issue-exclude-created-before: ''
-          # issue-exclude-labels: ''
-          # issue-lock-labels: ''
-          issue-lock-comment: >
-            This old thread has been automatically locked. If you think you have 
-            found something related to this, please open a new issue by following 
-            the issue guide (<https://yihui.org/issue/>), and link to this 
+          # exclude-any-issue-labels: ''
+          # add-issue-labels: ''
+          issue-comment: >
+            This old thread has been automatically locked. If you think you have
+            found something related to this, please open a new issue by following
+            the issue guide (<https://yihui.org/issue/>), and link to this
             old issue if necessary.
           issue-lock-reason: 'resolved'
-          pr-lock-inactive-days: '180'
+          pr-inactive-days: '180'
           # pr-exclude-created-before: ''
-          # pr-exclude-labels: ''
-          # pr-lock-labels: ''
-          # pr-lock-comment: ''
+          # exclude-any-pr-labels: ''
+          # add-pr-labels: ''
+          # pr-comment: ''
           # pr-lock-reason: ''
-          # process-only: ''
+          # v5+: discussions are processed by default; restrict to issues/PRs only:
+          process-only: 'issues, prs'
diff --git a/.github/workflows/pkgdown.yaml b/.github/workflows/pkgdown.yaml
index b1aca2e7..2184ce5f 100644
--- a/.github/workflows/pkgdown.yaml
+++ b/.github/workflows/pkgdown.yaml
@@ -21,7 +21,7 @@ jobs:
     env:
       GITHUB_PAT: ${{ secrets.GITHUB_TOKEN }}
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v6
 
       - uses: r-lib/actions/setup-tinytex@v2
         env:
@@ -44,7 +44,7 @@ jobs:
         run: sudo apt-get install -y ghostscript
 
       - name: Cache some pkgdown assets
-        uses: actions/cache@v3
+        uses: actions/cache@v5
         with:
           path: |
             vignettes/articles/resources/*.gif
@@ -60,7 +60,7 @@ jobs:
 
       - name: Deploy to Netlify
         id: netlify-deploy
-        uses: nwtgck/actions-netlify@v2.0
+        uses: nwtgck/actions-netlify@v3.0
         with:
           publish-dir: 'reference'
           production-branch: main
diff --git a/.github/workflows/pr-commands.yaml b/.github/workflows/pr-commands.yaml
index 71f335b3..5edb3186 100644
--- a/.github/workflows/pr-commands.yaml
+++ b/.github/workflows/pr-commands.yaml
@@ -14,7 +14,7 @@ jobs:
     env:
       GITHUB_PAT: ${{ secrets.GITHUB_TOKEN }}
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v6
 
       - uses: r-lib/actions/pr-fetch@v2
         with:
@@ -51,7 +51,7 @@ jobs:
     env:
       GITHUB_PAT: ${{ secrets.GITHUB_TOKEN }}
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v6
 
       - uses: r-lib/actions/pr-fetch@v2
         with: