diff --git a/requirements_test.txt b/requirements_test.txt
index 56d12d3..66348b2 100644
--- a/requirements_test.txt
+++ b/requirements_test.txt
@@ -1,4 +1,5 @@
 behave
 pytest
 pytest-cov
-vulture
\ No newline at end of file
+vulture
+flake8
\ No newline at end of file