diff --git a/build-webapp.sh b/build-webapp.sh
index 4b98c94..f3965b1 100755
--- a/build-webapp.sh
+++ b/build-webapp.sh
@@ -11,7 +11,7 @@ fi
 apt-get update
 apt-get install -y python3-pip
 
-pip3 install mkdocs mkdocs-material || exit 1
+pip3 install mkdocs mkdocs-material mkdocs-git-revision-date-localized-plugin || exit 1
 
 mkdocs build || exit 1