diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index e49e293..20026d0 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -69,6 +69,7 @@ jobs:
       NUMPY_VERSION: ${{ matrix.numpy-version || 'numpy' }}
       TF_FORCE_GPU_ALLOW_GROWTH: true
       GH_TOKEN: ${{ secrets.PUBLIC_GH_TOKEN }}
+      CUDA_VISIBLE_DEVICES: ""
     runs-on: ${{ matrix.runs-on || 'ubuntu-latest' }}
     steps:
       - uses: nengo/nengo-bones/actions/setup@main