diff --git a/requirements.txt b/requirements.txt
index c4836ae..6365cd2 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,4 +1,4 @@
 Pillow==2.4.0
 PyPDF2==1.21
-reportlab==3.1.8
+reportlab==3.6.13
 wsgiref==0.1.2