diff --git a/requirements_3.6.lock.txt b/requirements_3.6.lock.txt
index d03ac62..466e490 100644
--- a/requirements_3.6.lock.txt
+++ b/requirements_3.6.lock.txt
@@ -1,7 +1,7 @@
 jupyter==1.0.0
 attrs==19.3.0
 backcall==0.1.0
-bleach==3.1.4
+bleach==3.3.0
 cycler==0.10.0
 decorator==4.4.2
 defusedxml==0.6.0
diff --git a/requirements_3.9.lock.txt b/requirements_3.9.lock.txt
index b79b57f..3b7695e 100644
--- a/requirements_3.9.lock.txt
+++ b/requirements_3.9.lock.txt
@@ -2,7 +2,7 @@ argon2-cffi==21.3.0
 argon2-cffi-bindings==21.2.0
 attrs==21.4.0
 backcall==0.2.0
-bleach==5.0.0
+bleach==3.3.0
 cffi==1.15.0
 cycler==0.11.0
 debugpy==1.6.0