diff --git a/Dockerfile b/Dockerfile
index 1f70e3df2a..dbf838d138 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -15,6 +15,7 @@ ADD docker /app/project/
 
 RUN . /app/bin/activate && pip install nodeenv && nodeenv -p &&\
     npm install -g npm &&\
+    ./bin/npm install tslib -g &&\
     ./bin/npm install less -g &&\
     ./bin/npm install datejs -g &&\
     ./bin/npm install jquery -g &&\