diff --git a/configs/components/rubygem-rubyntlm.rb b/configs/components/rubygem-rubyntlm.rb
index 95958174f..c26192884 100644
--- a/configs/components/rubygem-rubyntlm.rb
+++ b/configs/components/rubygem-rubyntlm.rb
@@ -1,5 +1,7 @@
 component 'rubygem-rubyntlm' do |pkg, settings, platform|
-  pkg.version '0.6.5'
-  pkg.md5sum 'a395ed20dbac837d6e61ca0c1e1fe131'
+  # Do not update past this version without solving the jruby/ruby2.7 issue described in the commit
+  # message this comment is associated with.
+  pkg.version '0.6.3'
+  pkg.md5sum 'e1f7477acf8a7d3effb2a3fb931aa84c'
   instance_eval File.read('configs/components/_base-rubygem.rb')
 end
\ No newline at end of file