diff --git a/tools/ci_build/github/linux/docker/scripts/training/requirements.txt b/tools/ci_build/github/linux/docker/scripts/training/requirements.txt
index df4c3d26aeaa7..cf717ffd1102a 100644
--- a/tools/ci_build/github/linux/docker/scripts/training/requirements.txt
+++ b/tools/ci_build/github/linux/docker/scripts/training/requirements.txt
@@ -11,3 +11,4 @@ tensorboard>=2.2.0,<2.5.0
 h5py
 setuptools>=41.4.0
 parameterized>=0.8.1
+filelock>=3.20.3 # not directly required, pinned by Snyk to avoid a vulnerability