diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 4cfd7d7..98e2363 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -68,7 +68,7 @@ jobs:
       - name: Install TensorFlow with GPU support
         if: ${{ contains(matrix.runs-on, 'gpu') }}
         run: |
-          micromamba install -y "$TF_VERSION" cudnn=8.4
+          micromamba install -y "$TF_VERSION" cudnn=8.4 matplotlib
       - uses: nengo/nengo-bones/actions/run-script@main
         with:
           name: ${{ matrix.script }}