diff --git a/requirements.txt b/requirements.txt
index 499fc1c..9fbabf4 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -4,7 +4,7 @@ pysam==0.16.0.1
 pytest-cov==2.10.1
 pytest==5.1.1
 scipy==1.5.2
-black==19.3b0
+black==24.3.0
 flake8==3.7.7
 gffutils==0.9
 numpy==1.19.1