diff --git a/contrib/mkdocs/install_mkdocs.sh b/contrib/mkdocs/install_mkdocs.sh
index 3b5cb433be..46c28a5e73 100755
--- a/contrib/mkdocs/install_mkdocs.sh
+++ b/contrib/mkdocs/install_mkdocs.sh
@@ -2,6 +2,7 @@
 #if [[ $(command -v pandoc 2 > /dev/null) ]]; then
 #    echo need to install pandoc
     sudo apt-get install -y pandoc
+    sudo apt-get install -y pandoc-citeproc
 #fi
 pandoc --version
 if [[ "$?" != 0 ]]; then