diff --git a/twitter/requirements.txt b/twitter/requirements.txt
index 04fee05..938e086 100644
--- a/twitter/requirements.txt
+++ b/twitter/requirements.txt
@@ -9,7 +9,7 @@ httplib2==0.9.2
 monkeylearn==0.2.3
 numpy==1.10.4
 oauth2client==2.0.1
-Pillow==2.6.1
+Pillow==6.2.0
 pynamodb==1.4.4
 python-dateutil==2.4.2
 PyYAML==3.11