diff --git a/.github/workflows/pkgdown.yaml b/.github/workflows/pkgdown.yaml
index 42918a4..b6d0e27 100644
--- a/.github/workflows/pkgdown.yaml
+++ b/.github/workflows/pkgdown.yaml
@@ -9,6 +9,9 @@ on:
 
 name: pkgdown
 
+env:
+  PKGDOWN_DEV_MODE: ${{ github.ref == 'refs/heads/main' && 'release' || 'devel' }}
+
 jobs:
   pkgdown:
     runs-on: ubuntu-latest
@@ -33,6 +36,9 @@ jobs:
           extra-packages: any::pkgdown, local::.
           needs: website
 
+      - name: Check dev mode
+        run: echo "$GITHUB_ENV"
+
       - name: Build site
         run: pkgdown::build_site_github_pages(new_process = FALSE, install = FALSE)
         shell: Rscript {0}