updated versions in the requirements

requirements.txt

@@ -12,5 +12,5 @@ chainer>=4.2.0,<8.0
 
 # my own packages
 cvargparse~=0.3
-cvdatasets~=0.8
-chainer_addons~=0.8
+cvdatasets~=0.9
+chainer_addons~=0.9