diff --git a/Dockerfile b/Dockerfile
index 14f57a8a..6501bc84 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -5,6 +5,9 @@
 # tags from Docker Hub.
 FROM python:3.6
 
+ENV TZ=Asia/Colombo
+RUN ln -snf /usr/share/zoneinfo/$TZ /etc/localtime && echo $TZ > /etc/timezone
+
 LABEL Name=results-tabulation-tallysheets
 EXPOSE 5000