diff --git a/requirements.txt b/requirements.txt
index d2a82bd..d5ed030 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,5 +1,5 @@
 ase==3.19.2
-bleach==3.1.5
+bleach==3.3.0
 certifi==2020.6.20
 cffi==1.14.0
 chardet==3.0.4
diff --git a/test_requirements.txt b/test_requirements.txt
index d2a82bd..d5ed030 100644
--- a/test_requirements.txt
+++ b/test_requirements.txt
@@ -1,5 +1,5 @@
 ase==3.19.2
-bleach==3.1.5
+bleach==3.3.0
 certifi==2020.6.20
 cffi==1.14.0
 chardet==3.0.4