diff --git a/Gemfile.lock b/Gemfile.lock
index ef55cf8e..cd2097ce 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -276,7 +276,7 @@ GEM
       sprockets (> 3.0)
       sprockets-rails
       tilt
-    spring (4.2.0)
+    spring (4.2.1)
     spring-watcher-listen (2.1.0)
       listen (>= 2.7, < 4.0)
       spring (>= 4)