diff --git a/.github/workflows/R-CMD-check-occasional.yaml b/.github/workflows/R-CMD-check-occasional.yaml
index 8a5e7234c..016082382 100644
--- a/.github/workflows/R-CMD-check-occasional.yaml
+++ b/.github/workflows/R-CMD-check-occasional.yaml
@@ -63,7 +63,7 @@ jobs:
           echo "LC_ALL=lv_LV.utf8" >> $GITHUB_ENV
           echo "LANGUAGE=lv_LV" >> $GITHUB_ENV
 
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
 
       - uses: r-lib/actions/setup-r@v2
         with:
diff --git a/.github/workflows/R-CMD-check.yaml b/.github/workflows/R-CMD-check.yaml
index 0aabc4030..775765f56 100644
--- a/.github/workflows/R-CMD-check.yaml
+++ b/.github/workflows/R-CMD-check.yaml
@@ -40,7 +40,7 @@ jobs:
       _R_CHECK_RD_CHECKRD_MINLEVEL_: -Inf
 
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
 
       - uses: r-lib/actions/setup-r@v2
         with:
diff --git a/.github/workflows/code-quality.yaml b/.github/workflows/code-quality.yaml
index 014bae696..7e0d655ae 100644
--- a/.github/workflows/code-quality.yaml
+++ b/.github/workflows/code-quality.yaml
@@ -16,7 +16,7 @@ jobs:
       md: ${{ steps.filter.outputs.md }}
       rd: ${{ steps.filter.outputs.rd }}
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
         with:
           fetch-depth: 0  # ensure diff against base is available for PRs
       - uses: dorny/paths-filter@v3
@@ -44,7 +44,7 @@ jobs:
     env:
       GITHUB_PAT: ${{ secrets.GITHUB_TOKEN }}
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
 
       - uses: r-lib/actions/setup-r@v2
         with:
@@ -68,7 +68,7 @@ jobs:
     if: needs.changes.outputs.c == 'true' || github.event_name == 'workflow_dispatch'
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
       - uses: r-lib/actions/setup-r@v2
       - name: Install Coccinelle
         # relying on the action above us to have updated the package cache
@@ -81,7 +81,7 @@ jobs:
     if: needs.changes.outputs.po == 'true' || github.event_name == 'workflow_dispatch'
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
       - uses: r-lib/actions/setup-r@v2
       - name: Check translations
         # only pay attention to files edited in the current PR, otherwise we can get
@@ -96,7 +96,7 @@ jobs:
     if: needs.changes.outputs.md == 'true' || github.event_name == 'workflow_dispatch'
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
       - uses: r-lib/actions/setup-r@v2
       - name: Lint
         run: Rscript .ci/lint.R .ci/linters/md . '[.]R?md$'
@@ -105,7 +105,7 @@ jobs:
     if: needs.changes.outputs.rd == 'true' || github.event_name == 'workflow_dispatch'
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
       - uses: r-lib/actions/setup-r@v2
       - name: Lint Rd files
         run: Rscript .ci/lint.R .ci/linters/rd man '[.]Rd$'
diff --git a/.github/workflows/cran-status-check.yaml b/.github/workflows/cran-status-check.yaml
index d92177421..3ab003a7d 100644
--- a/.github/workflows/cran-status-check.yaml
+++ b/.github/workflows/cran-status-check.yaml
@@ -13,7 +13,7 @@ jobs:
     permissions:
       issues: write
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
 
       - uses: r-lib/actions/setup-r@v2
         with:
diff --git a/.github/workflows/pkgup.yaml b/.github/workflows/pkgup.yaml
index 2ad5cd226..448212eac 100644
--- a/.github/workflows/pkgup.yaml
+++ b/.github/workflows/pkgup.yaml
@@ -22,7 +22,7 @@ jobs:
       url: ${{ steps.deployment.outputs.page_url }}
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
       - uses: r-lib/actions/setup-pandoc@v2
       - uses: r-lib/actions/setup-r@v2
       - name: cache-r-dependencies
diff --git a/.github/workflows/rchk.yaml b/.github/workflows/rchk.yaml
index 11ce02349..3ee115bc4 100644
--- a/.github/workflows/rchk.yaml
+++ b/.github/workflows/rchk.yaml
@@ -33,7 +33,7 @@ jobs:
   rchk:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
       - uses: r-lib/actions/setup-r@v2
         with:
             r-version: 'devel'
diff --git a/.github/workflows/test-coverage.yaml b/.github/workflows/test-coverage.yaml
index e0c87de1d..956215d61 100644
--- a/.github/workflows/test-coverage.yaml
+++ b/.github/workflows/test-coverage.yaml
@@ -29,7 +29,7 @@ jobs:
       GITHUB_PAT: ${{ secrets.GITHUB_TOKEN }}
 
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
 
       - uses: r-lib/actions/setup-r@v2
         with: