diff --git a/requirements.txt b/requirements.txt
index 3d31a4ac4ef41c1aefb11b10a2adee459d3fce4e..791661b49ac73b971e2cc45f97f9b58bc115131f 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -3,3 +3,4 @@ pre-commit
 protobuf >= 3.1.0
 yapf == 0.26.0
 pyyaml
+numpy