Updating the Youtube-DL

sudo apt install python3-pip

sudo pip3 install --upgrade youtube-dl

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The following is deprecated:

sudo apt install python-pip

sudo pip install youtube-dl

If you want to upgrade youtube-dl

sudo pip install --upgrade youtube-dl

or, if necessary

sudo pip install --upgrade pip

The following method of installation is deprecated:

sudo apt-get install python-setuptools

sudo easy_install pip