diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 0aa4337..277915c 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -44,6 +44,10 @@ jobs:
           . ci-support-v0
 
           build_py_project_in_conda_env
+          pushd contrib/meshgen11_dealii
+          bash build.sh
+          popd
+
           test_py_project
 
   pytest_mac:
@@ -66,6 +70,10 @@ jobs:
           . ci-support-v0
 
           build_py_project_in_conda_env
+          pushd contrib/meshgen11_dealii
+          bash build.sh
+          popd
+
           test_py_project
 
   docs:
@@ -84,6 +92,10 @@ jobs:
           . ci-support-v0
 
           build_py_project_in_conda_env
+          pushd contrib/meshgen11_dealii
+          bash build.sh
+          popd
+
           build_docs
 
   examples:
@@ -100,7 +112,12 @@ jobs:
 
           curl -L -O https://tiker.net/ci-support-v0
           . ci-support-v0
+
           build_py_project_in_conda_env
+          pushd contrib/meshgen11_dealii
+          bash build.sh
+          popd
+
           run_examples
 
 # vim: sw=2