diff --git a/setup.cfg b/setup.cfg
index 3733b22..ceaa571 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -20,7 +20,7 @@ python_requires = >=3.11
 install_requires =
     nionswift >=16.13,<17.0
     nionui >=9.0,<10.0
-    numpy >=2.2,<3.0
+    numpy >=2.1,<2.2
 tests_require =
     nionswift
     nionswift-io