[orca-list] when updating Orca master I get error: Python interpreter is too old

[Milton <milton duurzaamdigitaal org>]

Hi,

I use Ubuntu 18.04 with Orca master 3.33.1pre. Today I wanted to update 
Orca master. So I did in a terminal:
cd orca
git pull
python3.7 ./autogen.sh

I notice the next:
...
checking for GSTREAMER... no
checking whether /usr/bin/python3.7 version is >= 3.3... no
configure: error: Python interpreter is too old
milton@miltonbionic:~/orca$
Do I have to get the latest Python interpreter? If yes, how can I do so?
Thanks in advance.
Milton