diff --git a/.github/workflows/anari-visionaray-ci.yml b/.github/workflows/anari-visionaray-ci.yml
index 58e3aa43..e433a07b 100644
--- a/.github/workflows/anari-visionaray-ci.yml
+++ b/.github/workflows/anari-visionaray-ci.yml
@@ -2,7 +2,7 @@ name: anari-visionaray CI
 
 on:
   push:
-    branches: [ main ]
+    branches: [ main, ci ]
   pull_request:
     branches: [ main ]
 
@@ -11,17 +11,18 @@ jobs:
     runs-on: ${{ matrix.os }}
     strategy:
       matrix:
-        os: [ubuntu-latest]
+        os: [ubuntu-24.04]
         config: [Release, Debug]
+        cuda: [ON]
 
     steps:
     - uses: actions/checkout@v3
 
     - name: Install Packages
-      if: ${{ matrix.os == 'ubuntu-latest' }}
+      if: ${{ matrix.os == 'ubuntu-24.04' }}
       run: |
         sudo apt update
-        sudo apt install -y libglew-dev libboost-all-dev # nvidia-cuda-toolkit
+        sudo apt install -y libglew-dev libboost-all-dev cuda-toolkit-12-6 #nvidia-cuda-toolkit (explicitly ask for 12.6!)
 
     - name: Checkout ANARI-SDK
       uses: actions/checkout@v3
@@ -58,7 +59,8 @@ jobs:
          -DVSNRAY_ENABLE_EXAMPLES:BOOL=OFF \
          -DVSNRAY_ENABLE_VIEWER:BOOL=OFF \
          -DVSNRAY_ENABLE_COMMON:BOOL=OFF \
-         -DVSNRAY_ENABLE_CUDA:BOOL=OFF
+         -DVSNRAY_ENABLE_CUDA:BOOL=${{ matrix.cuda }} \
+         -DVSNRAY_ENABLE_TBB:BOOL=OFF \
         cmake --build visionaray/build --target install
 
     - name: Configure CMake
@@ -69,7 +71,7 @@ jobs:
         -DCMAKE_BUILD_TYPE=${{ matrix.config }}
         -DCMAKE_INSTALL_PREFIX=${{github.workspace}}/build/install
         -DBUILD_SHARED_LIBS:BOOL=ON
-        -DANARI_VISIONARAY_ENABLE_CUDA:BOOL=OFF # cuda and gcc-11.4 don't work together
+        -DANARI_VISIONARAY_ENABLE_CUDA:BOOL=${{ matrix.cuda }}
 
     - name: Build
       run: cmake --build ${{github.workspace}}/build --config ${{ matrix.config }} --target install