# Logstash-input-zeromq won't install on logstash 6.5.4

**URL:** <https://discuss.elastic.co/t/logstash-input-zeromq-wont-install-on-logstash-6-5-4/165334>\
**Category:** Logstash\
**Created:** [January 23, 2019, 5:21am UTC](https://discuss.elastic.co/t/logstash-input-zeromq-wont-install-on-logstash-6-5-4/165334 "2019-01-23T05:21:40Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![cmessin1](https://avatars.discourse-cdn.com/v4/letter/c/ce7236/32.png) [@cmessin1](https://discuss.elastic.co/u/cmessin1)\
**Post date:** [January 23, 2019, 5:21am UTC](https://discuss.elastic.co/t/logstash-input-zeromq-wont-install-on-logstash-6-5-4/165334/1 "2019-01-23T05:21:40Z")

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I am getting multiple dependency errors when trying to install logstash-input-zeromq on logstash 6.5.4.

Full output is probably too long to post but here is the beginning of it. I did try to do some manual installs with "jruby -S gem install" but it seems to be looking for different versions of the same gems.

/usr/share/logstash/bin/logstash-plugin install logstash-input-zeromq  
Validating logstash-input-zeromq  
Installing logstash-input-zeromq  
Plugin version conflict, aborting  
ERROR: Installation Aborted, message: Bundler could not find compatible versions for gem "logstash-core":  
In snapshot (Gemfile.lock):  
logstash-core (= 6.5.4)

In Gemfile:  
logstash-core-plugin-api (\>= 0) java depends on  
logstash-core (= 6.5.4) java

```
logstash-input-syslog (>= 0) java depends on
  logstash-filter-grok (>= 0) java depends on
    logstash-core (>= 5.6.0) java

logstash-input-zeromq (>= 0) java depends on
  logstash-core (< 2.0.0, >= 1.4.0) java

logstash-core (>= 0) java

```

Running `bundle update` will rebuild your snapshot from scratch, using only  
the gems in your Gemfile, which may resolve the conflict.  
Bundler could not find compatible versions for gem "logstash-core-plugin-api":  
In snapshot (Gemfile.lock):  
logstash-core-plugin-api (= 2.1.16)

In Gemfile:  
logstash-devutils (= 1.3.5) java depends on  
logstash-core-plugin-api (\<= 2.99, \>= 2.0) java

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<div class="post-metadata">

**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\
**Post date:** [February 20, 2019, 5:21am UTC](https://discuss.elastic.co/t/logstash-input-zeromq-wont-install-on-logstash-6-5-4/165334/2 "2019-02-20T05:21:53Z")

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