diff --git a/setup.py b/setup.py
index 02c76b2..7618785 100644
--- a/setup.py
+++ b/setup.py
@@ -62,7 +62,7 @@
     install_requires=[
         "eth-ape>=0.8.1,<0.9",
         "ethpm-types",  # Use same version as eth-ape
-        "pydantic>=2.8.2,<2.9",  # Bug in pydantic 2.9.1
+        "pydantic_settings>=2.4.0,<2.5",  # Bug in pydantic-settings
     ],
     python_requires=">=3.9,<4",
     extras_require=extras_require,