diff --git a/setup.py b/setup.py
index db863d5e..30602a18 100644
--- a/setup.py
+++ b/setup.py
@@ -103,8 +103,8 @@ def copy_shared_libraries():
         keywords="optimization",
         install_requires=[
             "sqlitedict>=1.6",
-            "numpy>=1.22",
-            "scipy>=1.8",
+            "numpy>=1.21",
+            "scipy>=1.7",
             "mdolab-baseclasses>=1.3.1",
         ],
         extras_require={