diff --git a/562/r/Dockerfile b/562/r/Dockerfile
index 72529b8..930c9be 100644
--- a/562/r/Dockerfile
+++ b/562/r/Dockerfile
@@ -2,7 +2,7 @@
 FROM ubcmds/base-r:891b93d
 
 # Define additional packages that are specific to this course
-ENV R_PACKAGES="AER"
+ENV R_PACKAGES="AER lme4"
 
 # Install the pre-defined R packages
 RUN install2.r -e $R_PACKAGES