diff --git a/pyproject.toml b/pyproject.toml
index 572d90b1b..c1ab6e80a 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -81,7 +81,7 @@ dev = [
     "mapbox-vector-tile",
     "jinja2",
     "tqdm",
-    "trio",
+    "anyio[trio]",
     "mypy",
     "pyright",
     "types-python-dateutil",