diff --git a/requirements_dev.txt b/requirements_dev.txt
index db785e2..137d28f 100644
--- a/requirements_dev.txt
+++ b/requirements_dev.txt
@@ -3,7 +3,7 @@ argh==0.26.2
 atomicwrites==1.3.0
 attrs==19.1.0
 Babel==2.6.0
-bleach==3.1.4
+bleach==3.3.0
 bumpversion==0.5.3
 certifi==2019.3.9
 chardet==3.0.4