diff --git a/requirements-dev.txt b/requirements-dev.txt
index 18861e1..688e400 100644
--- a/requirements-dev.txt
+++ b/requirements-dev.txt
@@ -7,4 +7,5 @@ docutils
 wheel
 pycodestyle
 twine
-xmltodict
\ No newline at end of file
+xmltodict
+pygments>=2.7.4 # not directly required, pinned by Snyk to avoid a vulnerability
\ No newline at end of file