diff --git a/docker/py-dsci-100-grading/Dockerfile b/docker/py-dsci-100-grading/Dockerfile
index c027959..e0da14f 100644
--- a/docker/py-dsci-100-grading/Dockerfile
+++ b/docker/py-dsci-100-grading/Dockerfile
@@ -10,4 +10,3 @@ RUN pip install "git+https://github.com/jupyter/nbgrader.git"
 
 # Clean the cache
 RUN mamba clean --all -f -y 
-
diff --git a/docker/r-dsci-100-grading/Dockerfile b/docker/r-dsci-100-grading/Dockerfile
index 2356f75..5a247a3 100644
--- a/docker/r-dsci-100-grading/Dockerfile
+++ b/docker/r-dsci-100-grading/Dockerfile
@@ -10,4 +10,3 @@ RUN pip install "git+https://github.com/jupyter/nbgrader.git"
 
 # Clean the cache
 RUN mamba clean --all -f -y 
-