Python3 complains about pip is old in venv

Har kört: python3 -m pip install --upgrade pip (och även python -m pip install --upgrade pip)

Men varje gång jag öppnar en ny venv (python3 -m venv env) och kör "pip install <....>" så klagar den på följande. Går det uppdatera pip så man slipper köra det varje gång i venv innan man börjar installera packet?

WARNING: You are using pip version 19.2.3, however version 20.0.2 is available.
You should consider upgrading via the 'python -m pip install --upgrade pip' command.

How to reproduce:

Steg 1: Upgrade pip (already upgraded)
PS C:\Temp\temp> python3 -m pip install --upgrade pip
Requirement already up-to-date: pip in c:\users\gunde\appdata\local\packages\pythonsoftwarefoundation.python.3.7_qbz5n2k
fra8p0\localcache\local-packages\python37\site-packages (20.0.2)

Steg 2: Activate the venv
PS C:\Temp\temp> python3 -m venv env
PS C:\Temp\temp> .\env\Scripts\activate

Steg 3: Install some lib
(env) PS C:\Temp\temp> pip install requests
Collecting requests
....
Installing collected packages: idna, chardet, urllib3, certifi, requests
Successfully installed certifi-2019.11.28 chardet-3.0.4 idna-2.9 requests-2.23.0 urllib3-1.25.8

Error message:
WARNING: You are using pip version 19.2.3, however version 20.0.2 is available.
You should consider upgrading via the 'python -m pip install --upgrade pip' command.

Any suggestions on how to avoid this error message? Its gone if I run the pip install, but should like to avoid it (even if its not much work)