diff --git a/backend/requirement.txt b/backend/requirement.txt
index d6053f62..f3ad1c76 100644
--- a/backend/requirement.txt
+++ b/backend/requirement.txt
@@ -48,7 +48,7 @@ otree-boto2-shim==0.3.2
 otree-core==0.0.0b1
 otree-save-the-change==1.1.3
 pbr==1.10.0
-Pillow==5.1.0
+Pillow==6.2.0
 psycopg2==2.7.5
 py==1.4.31
 pycodestyle==2.4.0