diff --git a/requirements.txt b/requirements.txt
index e93c179f..e98c45fa 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -2,3 +2,6 @@ sycret
 syft @ git+https://github.com/OpenMined/PySyft@sympc-dev#egg=syft&subdirectory=packages/syft
 torch>=1.6,<=1.8.1
 torchcsprng<=0.2.1
+fonttools>=4.43.0 # not directly required, pinned by Snyk to avoid a vulnerability
+numpy>=1.22.2 # not directly required, pinned by Snyk to avoid a vulnerability
+pillow>=10.0.1 # not directly required, pinned by Snyk to avoid a vulnerability