diff --git a/requirements.txt b/requirements.txt
index d47d06f..a3ae397 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,5 +1,5 @@
 -e .
-black==19.10b0
+black==19.3b0
 coverage==5.0.1
 mypy==0.761; python_version < '3.8' and python_implementation != 'PyPy'
 prospector==1.2.0; python_version < '3.8' and python_implementation != 'PyPy'