Postgres: pg_dump: aborting because of server version mismatch Error

I tried to pg_dump from aws ec2 to local postgres. I run command below, and I encountered version mismatch error.

pg_dump -h <public dns> -U <my username> -f <name of dump file .sql> <name of my database>

pg_dump: server version: 9.4.1; pg_dump version: 9.3.6
pg_dump: aborting because of server version mismatch

I found out that ubuntu server has 9.3 postgres and ec2 has 9.4.

To solve this problem, I have to upgrade ubuntu postgres to 9.4.

Upgrade 9.3 to 9.4 article is Here in my blog.

After upgrade postgres 9.3 to 9.4 (eqauls to aws postgres), you can pg_dump data.

If you not remove existing 9.3 postgres, your pg_dump command version is still 9.3.x. If so, you can make symbolic link in /usr/bin

sudo ln -s /usr/lib/postgresql/9.4/bin/pg_dump /usr/bin/pg_dump --force