diff --git a/requirements_dev.txt b/requirements_dev.txt
index 452b8bd..1ce8a20 100644
--- a/requirements_dev.txt
+++ b/requirements_dev.txt
@@ -1,5 +1,5 @@
 black==21.6b0
-blacken-docs==1.10.0
+blacken-docs==1.13.0
 pip==21.1.3
 pre-commit==2.13.0
 twine==3.4.1