diff --git a/setup.cfg b/setup.cfg
index 20a9df56..69898c52 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -79,6 +79,8 @@ filterwarnings =
   ignore:Deprecation Warning.*timeout.*parameter no longer needed:UserWarning
   # This is from skimage import
   ignore:.*np\.bool8.*is a deprecated alias:DeprecationWarning
+  # https://github.com/spacetelescope/crds/issues/922
+  ignore:Deprecated call to.*mpl_toolkits.*:DeprecationWarning
 
 [flake8]
 # Ignoring these for now: