diff --git a/.github/workflows/python-publish.yml b/.github/workflows/python-publish.yml
index 6044831..88fa59d 100644
--- a/.github/workflows/python-publish.yml
+++ b/.github/workflows/python-publish.yml
@@ -27,7 +27,8 @@ jobs:
         python3 -m
         pip install
         build
-        pip install numpy cython petsc petsc4py
+        pip install -U Cython==0.29.36
+        pip install numpy petsc petsc4py
         --user
     - name: Build a binary wheel and a source tarball
       run: python3 -m build