Why can't I change my pip3 from the built in to the MacPort-version?

Here is a terminal session: db@air ~ % port select --list pip3 Available versions for pip3: none pip3-apple (active) pip311 db@air ~ % sudo port select --set pip3 pip311 Selecting 'pip311' for 'pip3' succeeded. 'pip311' is now active. db@air ~ % port select --list pip3 Available versions for pip3: none pip3-apple pip311 (active) db@air ~ % which pip3 /Users/db/Library/Python/3.9/bin/pip3 db@air ~ % which -a pip3 /Users/db/Library/Python/3.9/bin/pip3 /opt/local/bin/pip3 /usr/bin/pip3 db@air ~ % echo $PATH /Users/db/Library/Python/3.11/bin:/Users/db/Library/Python/3.9/bin:/Users/db/Library/Python/3.8/bin:/opt/local/bin:/opt/local/sbin:/usr/local/bin:/System/Cryptexes/App/usr/bin:/usr/bin:/bin:/usr/sbin:/sbin:/opt/X11/bin:/Library/Apple/usr/bin:/var/run/com.apple.security.cryptexd/codex.system/bootstrap/usr/local/bin:/var/run/com.apple.security.cryptexd/codex.system/bootstrap/usr/bin:/var/run/com.apple.security.cryptexd/codex.system/bootstrap/usr/appleinternal/bin As you can see I have two pip3 installed. Changing from the built in to MacPorts is successful (no error message) and the listing is updated accordingly, but which still says that pip3 points to the built in from Python 3.9 rather than Python 3.11. What is going on here? How do I make pip from Python 3.11 the "active" one?