diff --git a/rafiki/requirements.txt b/rafiki/requirements.txt
index 35aa1331..cd4167cd 100644
--- a/rafiki/requirements.txt
+++ b/rafiki/requirements.txt
@@ -1,6 +1,6 @@
 requests==2.20.0
 numpy==1.14.5
-Pillow==5.3.0
+Pillow==6.2.0
 tqdm==4.28.1
 msgpack==0.6.1
 pandas==0.24.2