diff --git a/requirements.txt b/requirements.txt
old mode 100755
new mode 100644
index 5270dc41..9d4114d2
--- a/requirements.txt
+++ b/requirements.txt
@@ -9,7 +9,7 @@ billiard==3.5.0.3
 bleach==2.1.3
 bokeh==0.12.15
 cairocffi==0.8.1
-CairoSVG==2.1.3
+CairoSVG==2.5.1
 celery==4.1.0
 certifi==2017.11.5
 cffi==1.11.4