diff --git a/lib/scout_apm/utils/installed_gems.rb b/lib/scout_apm/utils/installed_gems.rb
index abfd701b..62e82aaf 100644
--- a/lib/scout_apm/utils/installed_gems.rb
+++ b/lib/scout_apm/utils/installed_gems.rb
@@ -12,7 +12,7 @@ def logger
       end
 
       def run
-        Bundler.rubygems.all_specs.map {|spec| [spec.name, spec.version.to_s] }
+        Bundler.rubygems.installed_specs.map {|spec| [spec.name, spec.version.to_s] }
       rescue => e
         logger.warn("Couldn't fetch Gem information: #{e.message}")
         []