diff --git a/requirements.txt b/requirements.txt
index 3e11815..eeba4e8 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -6,7 +6,7 @@
 #
 attrs==19.1.0             # via jsonschema
 backcall==0.1.0           # via ipython
-bleach==3.1.2             # via nbconvert
+bleach==3.1.4             # via nbconvert
 decorator==4.4.0          # via ipython, traitlets
 defusedxml==0.6.0         # via nbconvert
 entrypoints==0.3          # via nbconvert