diff --git a/pyproject.toml b/pyproject.toml
index 8ebd70762b2a5..619a6b99e3ae5 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -486,6 +486,8 @@ filterwarnings = [
   "error:::pandas",
   "error::ResourceWarning",
   "error::pytest.PytestUnraisableExceptionWarning",
+  # TODO(PY311-minimum): Specify EncodingWarning
+  "ignore:'encoding' argument not specified.::numpy",
   "ignore:.*ssl.SSLSocket:pytest.PytestUnraisableExceptionWarning",
   "ignore:.*ssl.SSLSocket:ResourceWarning",
   # GH 44844: Can remove once minimum matplotlib version >= 3.7