diff --git a/requirements.txt b/requirements.txt
index a7dde000..da79b41c 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -17,11 +17,11 @@ gunicorn==19.7.1
 icalendar==4.0.1
 lxml==4.2.1
 Markdown==2.6.11
-Pillow==5.0.0
+Pillow==5.1.0
 psycopg2==2.7.4
 Pygments==2.2.0
 PyPDF2==1.26.0
-python-dateutil==2.7.1
+python-dateutil==2.7.2
 pytz==2018.3
 raven==6.6.0
 reportlab==3.4.0