diff --git a/pyproject.toml b/pyproject.toml
index 5edc8068..b80ede9f 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -165,6 +165,8 @@ filterwarnings = [
     # From dateutil in sqlalchemy and jupyter_cache
     'ignore:datetime.datetime.utcnow\(\) is deprecated:DeprecationWarning:sqlalchemy',
     'ignore:datetime.datetime.utcnow\(\) is deprecated:DeprecationWarning:jupyter_cache',
+    # Windows issues, some may need to be fixed in MyST-NB, others are upstream
+    'ignore:Proactor event loop does not implement add_reader:RuntimeWarning:zmq',
 ]
 
 markers = [