diff --git a/pyproject.toml b/pyproject.toml
index 45521f0a..36a658c3 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -25,7 +25,7 @@ classifiers = [
     "Programming Language :: Python :: 3.12",
 ]
 dependencies = [
-    "tutor>=17.0.2,<18.0.0"
+    "tutor>=15.0.0,<16.0.0"
 ]
 
 [project.optional-dependencies]