diff --git a/requirements.txt b/requirements.txt
index b860adc..35cd49c 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -3,3 +3,5 @@ scikit-image
 scipy
 autopep8
 bash_kernel
+numpy>=1.22.2 # not directly required, pinned by Snyk to avoid a vulnerability
+pillow>=9.0.1 # not directly required, pinned by Snyk to avoid a vulnerability