diff --git a/docker/cuda/requirements_gpu.txt b/docker/cuda/requirements_gpu.txt
index afa1229..0d27500 100644
--- a/docker/cuda/requirements_gpu.txt
+++ b/docker/cuda/requirements_gpu.txt
@@ -13,7 +13,7 @@ h5py==2.9.0
 Keras-Applications==1.0.8
 Keras-Preprocessing==1.1.0
 kiwisolver==1.1.0
-lxml==4.4.1
+lxml==4.9.1
 Markdown==3.1.1
 matplotlib==3.1.1
 mock==2.0.0