diff --git a/pyproject.toml b/pyproject.toml
index 826378d0c..63920d889 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -19,7 +19,7 @@ classifiers = [
     "Programming Language :: Python",
 ]
 dependencies = [
-    "asdf>=3.1.0,<4",
+    "asdf>=3.1.0,<5",
     "astropy>=6.0,<7",
     "astroquery>=0.4.7,<0.5.0",
     "beautifulsoup4>=4.12.3,<5",