diff --git a/requirements.txt b/requirements.txt
index fb2c7a66..1f130e06 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -16,7 +16,7 @@ gunicorn==19.7.1
 icalendar==3.11.7
 lxml==4.0.0
 Markdown==2.6.9
-Pillow==4.2.1
+Pillow==4.3.0
 psycopg2==2.7.3.1
 Pygments==2.2.0
 PyPDF2==1.26.0