diff --git a/pyproject.toml b/pyproject.toml
index 34338e04a0..eb3fcde9bb 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -37,7 +37,7 @@ version = {attr = "unsloth.__version__"}
 
 [project.optional-dependencies]
 cu118 = {file = ["requirements_cu118.txt"]}
-cu118 = {file = ["requirements_cu121.txt"]}
+cu121 = {file = ["requirements_cu121.txt"]}
 
 [project.urls]
 homepage = "http://www.unsloth.ai"