diff --git a/requirements_dev.txt b/requirements_dev.txt
index e832d4d..f963a1b 100644
--- a/requirements_dev.txt
+++ b/requirements_dev.txt
@@ -9,4 +9,4 @@ Sphinx==1.8.5
 twine==1.14.0
 Click==7.1.2
 
-black==21.7b0
+black==26.3.1