diff --git a/lib/rerun/notification.rb b/lib/rerun/notification.rb
index 6663d47..06bc722 100644
--- a/lib/rerun/notification.rb
+++ b/lib/rerun/notification.rb
@@ -44,7 +44,9 @@ def command_named(name)
 
     def send(background = true)
       return unless command
-      `#{command}#{" &" if background}`
+      with_clean_env do
+        `#{command}#{" &" if background}`
+      end
     end
 
     def app_name
@@ -60,5 +62,14 @@ def icon_dir
       File.expand_path("#{here}/../../icons")
     end
 
+    def with_clean_env
+      if defined?(Bundler)
+        Bundler.with_clean_env do
+          yield
+        end
+      else
+        yield
+      end
+    end
   end
 end