diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 1ea8d80..59e8056 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -25,6 +25,9 @@ jobs:
             command: diff-pdf.exe
 
     steps:
+    - if: matrix.os == 'ubuntu-latest'
+      run: sudo apt install at-spi2-core
+
     - uses: actions/checkout@v3
 
     - name: Build package