diff --git a/pyproject.toml b/pyproject.toml
index e5e2646fdf90b02d9abd876c30ba3772a6ac1bbf..1d15ad7d9a23fece8d2321b3f09abba072fa4c6e 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,3 +1,3 @@
 [tool.black]
-line-length=75
+line-length=79
 target-version=['py36']