# Unable to install a specific version of Elastic Stack software (Ubuntu 20.04 LTS) **URL:** \ **Category:** Elasticsearch\ **Created:** [July 11, 2022, 9:28am UTC](https://discuss.elastic.co/t/unable-to-install-a-specific-version-of-elastic-stack-software-ubuntu-20-04-lts/309305 "2022-07-11T09:28:39Z")\ **Posts on this page:** 2\ **Page:** 1
**Author:** ![Rysiu](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/rysiu/32/61919_2.png) [@Rysiu](https://discuss.elastic.co/u/Rysiu)\ **Post date:** [July 11, 2022, 9:28am UTC](https://discuss.elastic.co/t/unable-to-install-a-specific-version-of-elastic-stack-software-ubuntu-20-04-lts/309305/1 "2022-07-11T09:28:39Z")
Hi, I have Ubuntu 20.04 LTS with the latest updates. ```auto root@pk-elk1:/etc/kibana# uname -a Linux pk-elk1 5.13.0-1028-azure #33~20.04.1-Ubuntu SMP Fri Jun 3 15:13:34 UTC 2022 x86_64 x86_64 x86_64 GNU/Linux ``` On this Ubuntu, I have APT repo added for Elastic 8.x. I can check the available versions of the Logstash package in the repository, for example: ```auto root@pk-elk1:/etc/kibana# apt-cache policy logstash logstash: Installed: 1:8.3.2-1 Candidate: 1:8.3.2-1 Version table: *** 1:8.3.2-1 500 500 https://artifacts.elastic.co/packages/8.x/apt stable/main amd64 Packages 100 /var/lib/dpkg/status 1:8.3.1-1 500 500 https://artifacts.elastic.co/packages/8.x/apt stable/main amd64 Packages 1:8.3.0-1 500 500 https://artifacts.elastic.co/packages/8.x/apt stable/main amd64 Packages 1:8.2.3-1 500 500 https://artifacts.elastic.co/packages/8.x/apt stable/main amd64 Packages 1:8.2.2-1 500 500 https://artifacts.elastic.co/packages/8.x/apt stable/main amd64 Packages 1:8.2.1-1 500 500 https://artifacts.elastic.co/packages/8.x/apt stable/main amd64 Packages 1:8.2.0-1 500 500 https://artifacts.elastic.co/packages/8.x/apt stable/main amd64 Packages 1:8.1.3-1 500 500 https://artifacts.elastic.co/packages/8.x/apt stable/main amd64 Packages 1:8.1.2-1 500 500 https://artifacts.elastic.co/packages/8.x/apt stable/main amd64 Packages 1:8.1.1-1 500 500 https://artifacts.elastic.co/packages/8.x/apt stable/main amd64 Packages 1:8.1.0-1 500 500 https://artifacts.elastic.co/packages/8.x/apt stable/main amd64 Packages 1:8.0.1-1 500 500 https://artifacts.elastic.co/packages/8.x/apt stable/main amd64 Packages 1:8.0.0-1 500 500 https://artifacts.elastic.co/packages/8.x/apt stable/main amd64 Packages ``` We can see that version 8.3.1 is available. However, we can't force install version logstash=8.3.1: ```auto root@pk-elk1:/etc/kibana# apt install logstash=8.3.1 Reading package lists... Done Building dependency tree Reading state information... Done E: Version '8.3.1' for 'logstash' was not found root@pk-elk1:/etc/kibana# apt install logstash=8.3.1-1 Reading package lists... Done Building dependency tree Reading state information... Done E: Version '8.3.1-1' for 'logstash' was not found ``` Why does such a problem arise? Any idea? ---
**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\ **Post date:** [August 8, 2022, 9:29am UTC](https://discuss.elastic.co/t/unable-to-install-a-specific-version-of-elastic-stack-software-ubuntu-20-04-lts/309305/2 "2022-08-08T09:29:17Z")
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