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-rw-r--r--lib/unicorn.rb4
1 files changed, 4 insertions, 0 deletions
diff --git a/lib/unicorn.rb b/lib/unicorn.rb
index 4a4e2e1..1ca0113 100644
--- a/lib/unicorn.rb
+++ b/lib/unicorn.rb
@@ -582,6 +582,10 @@ module Unicorn
     end
 
     def build_app!
+      if defined?(Gem) && Gem.respond_to?(:refresh)
+        logger.info "Refreshing Gem list"
+        Gem.refresh
+      end
       @app = @app.call if @app.respond_to?(:arity) && @app.arity == 0
     end