diff --git a/pyproject.toml b/pyproject.toml
index ab1a148b07..e114c36fd3 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -19,7 +19,7 @@ classifiers = [
 ]
 dependencies = [
     "asdf>=3.3,<5",
-    "astropy>=5.3",
+    "astropy>=6.0",
     "BayesicFitting>=3.0.1",
     "crds>=12.0.3",
     "drizzle>=2.0.0",