diff --git a/.github/workflows/check-standard.yaml b/.github/workflows/check-standard.yaml
index ce13d3f..45b0283 100644
--- a/.github/workflows/check-standard.yaml
+++ b/.github/workflows/check-standard.yaml
@@ -1,11 +1,9 @@
 # Based on https://github.com/r-lib/actions/blob/master/examples/check-standard.yaml
 on:
   push:
-    branches:
-      - master
+    branches: [main, master]
   pull_request:
-    branches:
-      - master
+    branches: [main, master]
 
 name: R-CMD-check
 
@@ -20,7 +18,7 @@ jobs:
       matrix:
         config:
           - {os: ubuntu-latest,   r: 'devel', xref: true}
-          - {os: ubuntu-latest,   r: '4.3',   xref: true, rspm: "https://packagemanager.rstudio.com/cran/__linux__/bionic/latest"}
+          - {os: ubuntu-latest,   r: 'release',   xref: true}
           
     env:
       R_REMOTES_NO_ERRORS_FROM_WARNINGS: true
@@ -37,12 +35,12 @@ jobs:
     steps:
       - uses: actions/checkout@v2
 
-      - uses: r-lib/actions/setup-r@main
+      - uses: r-lib/actions/setup-r@v1
         with:
           r-version: ${{ matrix.config.r }}
           http-user-agent: ${{ matrix.config.http-user-agent }}
 
-      - uses: r-lib/actions/setup-pandoc@master
+      - uses: r-lib/actions/setup-pandoc@v1
 
       - name: Query dependencies
         run: |
@@ -87,7 +85,7 @@ jobs:
 
       - name: Upload check results
         if: failure()
-        uses: actions/upload-artifact@master
+        uses: actions/upload-artifact@main
         with:
           name: ${{ runner.os }}-r${{ matrix.config.r }}-results
           path: check