diff --git a/requirements.txt b/requirements.txt
index 5bd63e3..2d4ebf8 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,3 +1,3 @@
-numpy==1.14.0
+numpy==1.17.4
 pandas==0.22.0
 workalendar==2.3.1