diff --git a/.build/Dockerfile b/.build/Dockerfile
index 596360e..e0ff005 100755
--- a/.build/Dockerfile
+++ b/.build/Dockerfile
@@ -27,7 +27,7 @@ ARG NB_GID="100"
 SHELL ["/bin/bash", "-o", "pipefail", "-c"]
 
 USER root
-
+RUN chmod 1777 /tmp && chmod 1777 /var/tmp
 # Install all OS dependencies for notebook server that starts but lacks all
 # features (e.g., download as all possible file formats)
 ENV DEBIAN_FRONTEND noninteractive