diff --git a/.github/workflows/R-CMD-check.yaml b/.github/workflows/R-CMD-check.yaml
index a4e2a6e..a59a965 100644
--- a/.github/workflows/R-CMD-check.yaml
+++ b/.github/workflows/R-CMD-check.yaml
@@ -1,58 +1,22 @@
+## Thin caller -- the matrix, system dependencies, caching, Drive staging
+## and the check itself all live in PredictiveEcology/actions. This file only
+## says which package to check and what it needs on top of the org defaults.
+##
+## Pinned @main deliberately: tags freeze and rot (v0.1/v0.2 kept the
+## ubuntugis PPA for months after the workflows rejected it). The actions repo
+## gates merges with its own self-test CI.
+
+name: R-CMD-check
+
 on:
   push:
-    branches:
-      - main
-      - master
-      - development
-      - LandWeb
+    branches: [main, master, development, LandWeb]
   pull_request:
-    branches:
-      - main
-      - master
-      - development
-
-name: R-CMD-check
+    branches: [main, master, development, LandWeb]
 
 jobs:
   R-CMD-check:
-    runs-on: ${{ matrix.config.os }}
-
-    name: ${{ matrix.config.os }} (${{ matrix.config.r }})
-
-    strategy:
-      fail-fast: false
-      matrix:
-        config:
-          - {os: macOS-latest,   r: 'release'}
-          - {os: windows-latest, r: 'devel'}
-          - {os: windows-latest, r: 'release'}
-          - {os: windows-latest, r: 'oldrel'}
-          - {os: ubuntu-latest,   r: 'devel'}
-          - {os: ubuntu-latest,   r: 'release'}
-          - {os: ubuntu-latest,   r: 'oldrel'}
-
-    env:
-      R_REMOTES_NO_ERRORS_FROM_WARNINGS: true
-      GITHUB_PAT: ${{ secrets.GITHUB_TOKEN }}
-
-    steps:
-      - uses: actions/checkout@v4
-
-      - uses: r-lib/actions/setup-pandoc@v2
-
-      - uses: r-lib/actions/setup-r@v2
-        with:
-          Ncpus: 2
-          r-version: ${{ matrix.config.r }}
-          use-public-rspm: false
-
-      - uses: r-lib/actions/setup-r-dependencies@v2
-        with:
-          extra-packages: |
-            any::rcmdcheck
-            any::Rcpp
-          needs: check
-
-      - uses: r-lib/actions/check-r-package@v2
-        with:
-          upload-snapshots: true
+    uses: PredictiveEcology/actions/.github/workflows/R-CMD-check.yaml@main
+    with:
+      extra-packages: |
+        any::Rcpp