How to install a specific MongoDB release (3.4.2) on Ubuntu 20.0 focal?

I followed the official doc here:

did the following step:

wget -qO - | sudo apt-key add -

echo "deb [ arch=amd64,arm64 ] focal/mongodb-org/3.4 multiverse" | sudo tee /etc/apt/sources.list.d/mongodb-org-3.4.list

sudo apt-get update

sudo apt-get install -y mongodb-org=3.4.2 mongodb-org-server=3.4.2 mongodb-org-shell=3.4.2 mongodb-org-mongos=3.4.2 mongodb-org-tools=3.4.2

I got the following error:

E: Version '3.4.2' for 'mongodb-org' was not found
E: Version '3.4.2' for 'mongodb-org-server' was not found
E: Version '3.4.2' for 'mongodb-org-shell' was not found
E: Version '3.4.2' for 'mongodb-org-mongos' was not found
E: Version '3.4' for 'mongodb-org-tools' was not found

Please help!

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