diff --git a/pyproject.toml b/pyproject.toml
index 6405a5c..49bc68a 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -20,7 +20,7 @@ dependencies = [
     "mcp[cli]>=1.0.0",
     "fastmcp>=0.4.1",
     "monarchmoney>=0.1.15",
-    "gql>=4.0",
+    "gql>=3.4,<4.0",
     "python-dotenv>=1.0.0",
     "pydantic>=2.0.0",
     "starlette>=0.35.0",