diff --git a/r-dsci-100/Dockerfile b/r-dsci-100/Dockerfile
index 2800f04001..2a66c6d8cc 100644
--- a/r-dsci-100/Dockerfile
+++ b/r-dsci-100/Dockerfile
@@ -1,6 +1,5 @@
 # Copyright (c) UBC-DSCI Development Team.
 # Distributed under the terms of the Modified BSD License.
-#
 ARG BASE_CONTAINER=jupyter/r-notebook
 FROM $BASE_CONTAINER
 
diff --git a/r-dsci-grading/Dockerfile b/r-dsci-grading/Dockerfile
index 058ae07f7e..bb5ef6b0be 100644
--- a/r-dsci-grading/Dockerfile
+++ b/r-dsci-grading/Dockerfile
@@ -12,7 +12,7 @@ USER root
 RUN conda install --quiet --yes -c conda-forge rise
 
 # install nbgrader extension
-RUN pip install nbgrader==0.6.1
+RUN pip install nbgrader==0.6.2
 RUN jupyter nbextension install --sys-prefix --py nbgrader --overwrite 
 RUN jupyter nbextension enable --sys-prefix --py nbgrader
 RUN jupyter serverextension enable --sys-prefix --py nbgrader