diff --git a/requirements.txt b/requirements.txt
index 29b176c..88236ee 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -3,4 +3,7 @@
 
 # --- For the codebase
 tqdm>=4.0
-numpy>=1.14
\ No newline at end of file
+numpy>=1.14
+
+# --- For the tests
+behave