Bump to MRI 2.5.4

MRI 2.5.4 now regressed and suffers from the same issue as 2.6.2 :S

1 files changed, 2 insertions, 2 deletions

diff --git a/Rakefile b/Rakefile
index 0f455f4652..35b39a579c 100644
--- a/Rakefile
+++ b/Rakefile
@@ -77,8 +77,8 @@ namespace :spec do
       # Install the gems with a consistent version of RubyGems
       sh "gem update --system 3.0.3"
 
-      # Fix incorrect default etc gem specification file list on ruby 2.6.2.
-      if RUBY_VERSION == "2.6.2"
+      # Fix incorrect default etc gem specification file list on ruby 2.6.2 and 2.5.4
+      if RUBY_VERSION == "2.6.2" || RUBY_VERSION == "2.5.4"
         sh "gem install etc:1.0.1 --default"
       end