# Yunohost 11.3 on an Debian 11 - cannot upgrade bechause of NO\_PUBKEY 5D09F2273DAC3BD5
**URL:** https://forum.yunohost.org/t/yunohost-11-3-on-an-debian-11-cannot-upgrade-bechause-of-no-pubkey-5d09f2273dac3bd5/32418
**Category:** Support
**Tags:** english
**Created:** [December 7, 2024, 11:54am UTC](https://forum.yunohost.org/t/yunohost-11-3-on-an-debian-11-cannot-upgrade-bechause-of-no-pubkey-5d09f2273dac3bd5/32418 "2024-12-07T11:54:33Z")
**Posts on this page:** 6
**Page:** 1
### Author:  [@simondueckert](https://forum.yunohost.org/u/simondueckert)
#### Post date: [December 7, 2024, 11:54am UTC](https://forum.yunohost.org/t/yunohost-11-3-on-an-debian-11-cannot-upgrade-bechause-of-no-pubkey-5d09f2273dac3bd5/32418/1 "2024-12-07T11:54:33Z")
**What type of hardware are you using** : Virtual machine
**What YunoHost version are you running** : 11.3
**How are you able to access your server** : SSH
### Describe your issue
I have a Yunohost 11.3 on an Debian 11 system. When I try to update with _apt update_ I get the error message
```auto
The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 5D09F2273DAC3BD5
```
I searched the forum and googled it but could not find a proper solution.
### Share relevant logs or error messages
There is no entry in the logs
---
### Author:  [@metyun](https://forum.yunohost.org/u/metyun)
#### Post date: [December 7, 2024, 12:09pm UTC](https://forum.yunohost.org/t/yunohost-11-3-on-an-debian-11-cannot-upgrade-bechause-of-no-pubkey-5d09f2273dac3bd5/32418/2 "2024-12-07T12:09:26Z")
Hi,
Did you try this?
```auto
curl --fail --silent https://forge.yunohost.org/yunohost_bookworm.asc | gpg --dearmor > /usr/share/keyrings/yunohost-bookworm.gpg
```
> [@rocket YunoHost 12.0 (Bookworm) release / Sortie de YunoHost 12.0 (Bookworm)](https://forum.yunohost.org/t/yunohost-12-0-bookworm-release-sortie-de-yunohost-12-0-bookworm/31673/228):
>
> Hi, I’m running into this when I try to update: ❯ sudo apt update Hit:1 http://security.debian.org/debian-security bookworm-security InRelease Hit:2 http://deb.debian.org/debian bookworm InRelease Hit:3 http://deb.debian.org/debian bookworm-updates InRelease Hit:4 https://download.docker.com/linux/debian bookworm InRelease Hit:5 https://dl.yarnpkg.com/debian stable InRelease Hit:6 https://packages.sury.org/php bookworm InRelease Hit:7 https://repo.nordvpn.com//deb/nordvpn/debian stable InReleas…
---
### Author:  [@simondueckert](https://forum.yunohost.org/u/simondueckert)
#### Post date: [December 7, 2024, 12:13pm UTC](https://forum.yunohost.org/t/yunohost-11-3-on-an-debian-11-cannot-upgrade-bechause-of-no-pubkey-5d09f2273dac3bd5/32418/3 "2024-12-07T12:13:16Z")
Yes and I veryfied that the key is in the folder (there is also an archived one). The error message is still
```auto
The repository 'http://forge.yunohost.org/debian bookworm InRelease' is not signed.
```
Is it possible that my problem comes from the debian 11 installation under yunohost 11.3?
Update: migration started, I hat a typo in the keyrings line 🤪
---
### Author:  [@rungeard](https://forum.yunohost.org/u/rungeard)
#### Post date: [December 7, 2024, 2:38pm UTC](https://forum.yunohost.org/t/yunohost-11-3-on-an-debian-11-cannot-upgrade-bechause-of-no-pubkey-5d09f2273dac3bd5/32418/4 "2024-12-07T14:38:38Z")
Did you also change the content of `/etc/apt/sources.list.d/yunohost.list` to
```auto
deb [signed-by=/usr/share/keyrings/yunohost-bookworm.gpg] https://forge.yunohost.org/debian/ bookworm stable
```
as mentioned in the linked post ?
---
### Author:  [@metyun](https://forum.yunohost.org/u/metyun)
#### Post date: [December 7, 2024, 2:57pm UTC](https://forum.yunohost.org/t/yunohost-11-3-on-an-debian-11-cannot-upgrade-bechause-of-no-pubkey-5d09f2273dac3bd5/32418/5 "2024-12-07T14:57:54Z")
Oh yes, i didn’t notice it is bullseye.
Try with bullseye instead of bookworm
---
### Author:  [@system](https://forum.yunohost.org/u/system)
#### Post date: [January 6, 2025, 2:58pm UTC](https://forum.yunohost.org/t/yunohost-11-3-on-an-debian-11-cannot-upgrade-bechause-of-no-pubkey-5d09f2273dac3bd5/32418/6 "2025-01-06T14:58:55Z")
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