diff --git a/requirements.txt b/requirements.txt
index 6b46791985..e3a8f501ab 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -2,4 +2,4 @@ numpy
 scipy
 pyyaml
 dargs >= 0.2.2
-typing_extensions
+typing_extensions; python_version < "3.7"