diff --git a/lib/rubygems/exceptions.rb b/lib/rubygems/exceptions.rb
index 10530163cb..793324b875 100644
--- a/lib/rubygems/exceptions.rb
+++ b/lib/rubygems/exceptions.rb
@@ -134,6 +134,8 @@ class Gem::SpecificGemNotFoundException < Gem::GemNotFoundException
   attr_reader :errors
 end
 
+Gem.deprecate_constant :SpecificGemNotFoundException
+
 ##
 # Raised by Gem::Resolver when dependencies conflict and create the
 # inability to find a valid possible spec for a request.