diff --git a/recipe/meta.yaml b/recipe/meta.yaml
index c837cef..cb5b978 100644
--- a/recipe/meta.yaml
+++ b/recipe/meta.yaml
@@ -114,6 +114,7 @@ outputs:
         - mkdir test && cd test && libtbx.run_tests_parallel module=cctbx module=libtbx module=scitbx nproc=4  # [win]
       requires:
         - pip
+        - wxwidgets =3.2.5
 
 about:
   home: https://github.com/cctbx/cctbx_project