diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 2f0e814..00fab7a 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -46,6 +46,7 @@ jobs:
       run: |
         python -mpip install --upgrade pip
         python -mpip install build
+        pythom -mpip install PyYAML
     - name: Build sdist and wheel
       run: |
         python -mbuild