diff --git a/requirements-dev.txt b/requirements-dev.txt
index 9a249c9..6d5faaa 100644
--- a/requirements-dev.txt
+++ b/requirements-dev.txt
@@ -1,6 +1,6 @@
 thunder-python==1.4.2
 scipy==1.1.0
-numpy==1.15.2
+numpy==1.18.4
 future==0.16.0
 pytest==3.8.1
 pytest-pep8==1.0.6
diff --git a/requirements.txt b/requirements.txt
index adabc4a..56ea064 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,4 +1,4 @@
 thunder-python==1.4.2
 scipy==1.1.0
-numpy==1.15.2
+numpy==1.18.4
 future==0.16.0