diff --git a/pyproject.toml b/pyproject.toml
index fe9b6964..bac841cc 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -57,8 +57,6 @@ dev = [
     "tomli~=2.0; python_version<'3.11'",
     "types-python-dateutil>=2.8.19,<2.10.0",
     "types-requests~=2.31.0",
-    # temporary pin https://github.com/stac-utils/pystac-client/issues/509
-    "urllib3<2",
 ]
 docs = [
     "Sphinx~=7.3",