diff --git a/pyproject.toml b/pyproject.toml
index 3052a58d3396fe9c717879997a636b515ac3d360..dc3a46f75bac8e9ef37f5765fa7b7a4f3f6c7b99 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -19,4 +19,5 @@ source = ["gwdatafind"]
 addopts = "-r a --color=yes"
 filterwarnings = [
 	"error",
+	"ignore:.*pkg_resources"
 ]