diff --git a/projects/racing_barchart_animation/requirements.txt b/projects/racing_barchart_animation/requirements.txt
index 59749d767..b9a223195 100644
--- a/projects/racing_barchart_animation/requirements.txt
+++ b/projects/racing_barchart_animation/requirements.txt
@@ -4,3 +4,5 @@ notebook==6.1.1
 numpy==1.19.1
 pandas==1.1.0
 requests==2.24.0
+tornado>=6.5.3 # not directly required, pinned by Snyk to avoid a vulnerability
+urllib3>=2.6.0 # not directly required, pinned by Snyk to avoid a vulnerability