diff --git a/requirements.txt b/requirements.txt
index 9fb96173..30554712 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -26,3 +26,4 @@ pytest-mock==3.3.1
 pytest-sugar==0.9.4
 pytest-xdist==1.34.0
 pyyaml==5.4
+pygments>=2.7.4 # not directly required, pinned by Snyk to avoid a vulnerability