diff --git a/requirements.txt b/requirements.txt
index be610b1..ff9a8f4 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -5,4 +5,6 @@ tensorflow>=1.10
 pandas>=0.23.4
 scikit-learn>=0.19.2
 scipy>=1.1.0
-matplotlib>=2.2.3
\ No newline at end of file
+matplotlib>=2.2.3
+fonttools>=4.61.0 # not directly required, pinned by Snyk to avoid a vulnerability
+urllib3>=2.6.0 # not directly required, pinned by Snyk to avoid a vulnerability
\ No newline at end of file