diff --git a/.requirements_dev.txt b/.requirements_dev.txt
index 82f7066..e8974f8 100644
--- a/.requirements_dev.txt
+++ b/.requirements_dev.txt
@@ -5,3 +5,4 @@ pytest==4.5.0
 pytest-cov==2.7.1
 pytest-runner==4.4
 codecov==2.0.15
+importlib-metadata>=1