diff --git a/setup.py b/setup.py
index ab213c0..0db7b93 100755
--- a/setup.py
+++ b/setup.py
@@ -68,9 +68,9 @@ def read(*names, **kwargs):
         "tabulate~=0.9.0",
         "requests>=2.31",
         "sqlglot[c]==30.11.0",
-        "mcp>=1.9.0,<2.0.0",
-        "pyperclip~=1.8.2",
-        "python-dotenv~=1.0.0",
+        "mcp>=1.9.0,<3.0.0",
+        "pyperclip>=1.8.2,<2.0",
+        "python-dotenv>=1.0.0,<2.0",
     ],
     extras_require={
         # eg: