diff --git a/requirements.txt b/requirements.txt
index 5f14f6c..d83f56e 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -4,4 +4,6 @@ numba>=0.56.4
 numpy==1.23.5
 scipy>=1.9.3
 awkward>=2.0.8
-sympy>=1.11.1
\ No newline at end of file
+sympy>=1.11.1
+fonttools>=4.43.0 # not directly required, pinned by Snyk to avoid a vulnerability
+pillow>=10.3.0 # not directly required, pinned by Snyk to avoid a vulnerability
\ No newline at end of file