diff --git a/requirements-dev.txt b/requirements-dev.txt
index 69311ef..d212325 100644
--- a/requirements-dev.txt
+++ b/requirements-dev.txt
@@ -2,7 +2,7 @@ pytest>=4.3.1
 pytest-cov>=2.6.1
 setuptools>=40.8.0
 vulture>=1.0
-bandit>=1.5.1
+bandit>=1.9.4
 pydocstyle>=6.3.0
 build>=1.1.1
 twine>=4.0.2