diff --git a/.github/workflows/test-n-publish.yml b/.github/workflows/test-n-publish.yml
index ee47a74..a1fe18b 100644
--- a/.github/workflows/test-n-publish.yml
+++ b/.github/workflows/test-n-publish.yml
@@ -18,6 +18,7 @@ jobs:
     - name: Install
       run: |
         python -m pip install --upgrade pip
+        python -m pip install -U PyYAML
         python -m pip install "git+https://github.com/RRZE-HPC/OSACA.git@InstrucForm"
         python -m pip install codecov requests sympy
         python -m pip install -e .