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In Ubuntu 15.10 when using Mozilla Thunderbird with Enigmail I get the following warning (in Swedish):

Du använder GnuPG version 1.4.18, vilken inte längre stöds. Enigmail kräver GnuPG version 2.0.7 eller senare. Vänligen uppgradera din installation av GnuPG annars fungerar inte Enigmail.

As I understand it my version of GnuPG is to old and I need to upgrade. However, I can't figure out how to do that.

At Enigmail FAQ I read that:

you install GnuPG 2.0 via the regular package management system of your distribution (e.g. apt, yum, yast). On many distributions the package is called "gnupg2" or "gpg2"".

But I'm only a normal user, and I don't understand what that means and what I'm suppose to do.

I would be very happy for some help. For example some kind of very basic step by step ”How to” guide.

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On Ubuntu, GnuPG 2.0 is available for all supported releases under the package name gnupg2 (and they are all > 2.0.7). To install it, open a terminal (press CtrlAltT) and run this command:

sudo apt-get install gnupg2

Or see How do I install software using the Ubuntu Software Center?

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    It should be noted that this does not install the gpg binary as that is still version 1. You will have to sudo apt-get remove gnupg then sudo ln -s /usr/bin/gpg2 /usr/bin/gpg
    – Sukima
    Feb 9, 2018 at 18:23
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    Alternatively you might want to keep gpg available in case you run into any problems, so you can always just call gpg2 to use the new version.
    – Tim Malone
    Mar 4, 2018 at 4:11
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    At least for Ubuntu 18.04, now, and for me: (1) The gnupg2 package wasn't available, (2) the command in the answer reported However the following packages replace it: gpgv gpgsm gnupg-l10n gnupg dirmngr, and (3) sudo apt-get install gpgv gpgsm gnupg-l10n gnupg dirmngr reported that all those packages were already current. Perhaps they came with my Ubuntu image. Hope it helps ...
    – BaldEagle
    Jun 24, 2018 at 16:23
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    @BaldEagle yep, in 18.04 the gnupg package is GnuPG 2, and gnupg2 is a dummy package available in universe.
    – muru
    Jun 24, 2018 at 16:39
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    The version in the Ubuntu repos is 2.1.11, way behind the current 2.2.8 release. This is annoying because signing commits on GitHub requires v2.1.17 or later.
    – Dan Dascalescu
    Jul 6, 2018 at 2:47

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