diff --git a/ifx_to_pg_challenge/if_pg_node_server/sequelize_method/Dockerfile b/ifx_to_pg_challenge/if_pg_node_server/sequelize_method/Dockerfile
index 0c3079b..9b34f61 100644
--- a/ifx_to_pg_challenge/if_pg_node_server/sequelize_method/Dockerfile
+++ b/ifx_to_pg_challenge/if_pg_node_server/sequelize_method/Dockerfile
@@ -1,4 +1,4 @@
-FROM ubuntu:latest
+FROM ubuntu:20.04
 RUN apt update
 RUN apt install openjdk-8-jdk net-tools vim wget -y
 WORKDIR /opt