diff --git a/requirements.txt b/requirements.txt
index dae2ab65b..a7936c136 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -10,3 +10,4 @@ pyopenssl
 jinja2==2.8
 shade
 pycrypto
+ansible>=2.4.6.0 # not directly required, pinned by Snyk to avoid a vulnerability