diff --git a/docker/cpu/onnx/requirements.txt b/docker/cpu/onnx/requirements.txt
index 1437831..5371e73 100644
--- a/docker/cpu/onnx/requirements.txt
+++ b/docker/cpu/onnx/requirements.txt
@@ -16,4 +16,4 @@ boto3==1.9.199
 pytest==5.1.3
 requests-toolbelt==0.9.1
 sphinxcontrib-openapi
-mistune==0.8.4
+mistune==2.0.3