diff --git a/Dockerfile b/Dockerfile
index b7b5707..fc72423 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,3 +1,4 @@
+# torchvision requires python 3.9 https://pypi.org/project/torchvision/
 ARG BASE=python:3.9
 FROM ${BASE}
 
diff --git a/tests/requirements.txt b/tests/requirements.txt
index d8abaaa..4abee57 100644
--- a/tests/requirements.txt
+++ b/tests/requirements.txt
@@ -1,2 +1,2 @@
-requests==2.26.0
+requests==2.27.0
 pytest==6.2.5