diff --git a/rocker-r_base/Dockerfile b/rocker-r_base/Dockerfile
index e9af703..9e8e9c0 100644
--- a/rocker-r_base/Dockerfile
+++ b/rocker-r_base/Dockerfile
@@ -4,4 +4,4 @@ RUN apt-get update && \
     apt-get install -y procps && \
     apt-get clean -y && rm -rf /var/lib/apt/lists/*
 
-RUN Rscript -e "install.packages(c('R.utils', 'dplyr'))"
+RUN Rscript -e "install.packages(c('R.utils', 'dplyr', 'hash'))"