diff --git a/pyproject.toml b/pyproject.toml
index b0ddb77c1..0f6dda895 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -15,7 +15,6 @@ dynamic = [
 ]
 dependencies = [
   "asdf-standard>=1.1.0",
-  "asdf-transform-schemas>=0.3",  # required for asdf-1.0.0 schema
   "importlib-metadata>=4.11.4 ; python_version<='3.11'",
   "jmespath>=0.6.2",
   "numpy>=1.22",