diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
index b18108d..8f5ec87 100644
--- a/.github/workflows/ci.yaml
+++ b/.github/workflows/ci.yaml
@@ -8,8 +8,6 @@ on:
 
 env:
   _R_CHECK_FORCE_SUGGESTS_: "false"
-  USE_BSPM: "FALSE"
-  USE_RAPT: "TRUE"
 
 jobs:
   ci:
@@ -28,6 +26,7 @@ jobs:
         uses: eddelbuettel/github-actions/r-ci@master
         with:
           dev_version: 'TRUE'
+          backend: 'RAPT'
 
       - name: Dependencies
         run: ./run.sh install_deps