diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index e87f1a223f..12a13a0514 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -71,7 +71,7 @@ jobs:
       - name: install xmlschema
         run: |
           sudo /usr/bin/python -m pip install -U pip
-          sudo /usr/bin/python -m pip install xmlschema
+          sudo /usr/bin/python -m pip install xmlschema numpy
 
       - name: Test
         run: |