commit 2d858f2ca4801dba89697501e0efb76cd805b89b
Author: Takashi Kajinami <tkajinam@redhat.com>
Date:   Thu Oct 8 07:44:06 2020 +0900

    Pin puppet-lint-param-docs
    
    puppet-lint-param-docs 1.6.0 introduced several new rules and stable
    branches are incomptatible with these rules.
    Let's pin it to the older version because we don't want to update
    stable branches to follow the latest lint rules.
    
    Closes-Bug: #1898876
    Change-Id: I237272bd9afaaf1d82ead341368af985073326ca
    (cherry picked from commit 7eda722405d301fbd1b13cfc701fa9491c600a7b)
    (cherry picked from commit 56eabef30f520ba7c5da7d5883d7e310b7928f13)

diff --git a/puppet-openstack_spec_helper.gemspec b/puppet-openstack_spec_helper.gemspec
index d25b2fc..800472e 100644
--- a/puppet-openstack_spec_helper.gemspec
+++ b/puppet-openstack_spec_helper.gemspec
@@ -35,7 +35,10 @@ Gem::Specification.new do |spec|
   rspec_puppet_facts_version = RUBY_VERSION < '2.1.0' ? ['>= 1.7.0', '< 1.9.5'] : ['>= 1.7.0']
   spec.add_dependency 'rspec-puppet-facts', rspec_puppet_facts_version
   spec.add_dependency 'metadata-json-lint'
-  spec.add_dependency 'puppet-lint-param-docs'
+
+  # NOTE(tkajinam): Use puppet-lint-param-docs 1.5.1 because stable branches are not compatible
+  #                 with new rules enforced in 1.6.0
+  spec.add_dependency 'puppet-lint-param-docs', ['= 1.5.1']
 
   # TODO(tobias-urdin): Use puppet-lint-absolute_classname-check >= 2.0.0 for Ruby version >= 2.1.0
   # when we have fixed all the absolute includes to relative.