diff --git a/pyproject.toml b/pyproject.toml
index 4c0a3fa2..da505b72 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -5,4 +5,4 @@ first_party_detection = false
 [tool.black]
 
 line-length = 110
-target-version = ["py36"]
+target-version = ["py37"]