diff --git a/setup.cfg b/setup.cfg
index 3923777..18c8fbc 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -20,3 +20,6 @@ ignore_errors = True
 # Be sure to include Hy test functions whose names end with "?",
 # which will be mangled to begin with "is_".
 python_functions=test_* is_test_*
+filterwarnings =
+    once::DeprecationWarning
+    once::PendingDeprecationWarning