diff --git a/pyproject.toml b/pyproject.toml
index 3530f4f60..caa92727e 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -23,7 +23,7 @@ dependencies = [
     'matplotlib',
     'stsci.tools>=4.0',
     'stsci.image>=2.3.4',
-    'stsci.imagestats>=1.8.1',
+    'stsci.imagestats',
     'stsci.skypac>=1.0.9',
     'stsci.stimage',
     'stwcs>=1.5.3',