diff --git a/ci/matrix.yaml b/ci/matrix.yaml
index 7f6e1a8cd10..fa33cb6897b 100644
--- a/ci/matrix.yaml
+++ b/ci/matrix.yaml
@@ -8,6 +8,8 @@ workflows:
   #   - {jobs: ['test'], project: 'thrust', std: 17, ctk: 'curr', cxx: ['gcc12', 'llvm16']}
   #
   override:
+    - {jobs: ['test_gpu'],  project: 'thrust', cmake_options: '-DTHRUST_DISPATCH_TYPE=Force32bit'}
+    - {jobs: ['test_gpu'],  project: 'thrust', cmake_options: '-DTHRUST_DISPATCH_TYPE=Force64bit'}
 
   pull_request:
     # Old CTK