diff --git a/.github/workflows/XmsMesher-CI.yaml b/.github/workflows/XmsMesher-CI.yaml
index e02b5046..fc504e37 100644
--- a/.github/workflows/XmsMesher-CI.yaml
+++ b/.github/workflows/XmsMesher-CI.yaml
@@ -85,7 +85,7 @@ jobs:
       - name: Install Python Dependencies
         run: |
           python -m pip install --upgrade pip
-          pip install conan==1.60.0 conan-package-tools==0.39.0 devpi-client wheel MarkupSafe==2.0.0
+          pip install pyYAML==5.3.1 conan==1.60.0 conan-package-tools==0.39.0 devpi-client wheel MarkupSafe==2.0.0
           python -m pip install -i https://public.aquapi.aquaveo.com/aquaveo/stable/+simple/ "xmsconan>=1.0.4,<2"
       # Setup Conan
       - name: Setup Conan Directory