diff --git a/requirements.txt b/requirements.txt
index 29f2a5d..050bb32 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,5 +1,5 @@
 biopython==1.71
-numpy==1.14.3
+numpy==1.15.0
 pandas==0.23.3
 python-dateutil==2.7.2
 pytz==2018.5