diff --git a/requirements.txt b/requirements.txt
index cac6ebc12e..0afa9e0467 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -11,3 +11,4 @@ mbed-host-tests>=1.1.2
 mbed-greentea>=0.2.24
 beautifulsoup4>=4
 fuzzywuzzy>=0.11
+pyelftools>=0.24