diff --git a/Gemfile.lock b/Gemfile.lock
index 36556806..60f3c4c1 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -265,7 +265,7 @@ GEM
       thor (~> 1.0)
       tilt (~> 2.0)
       yard (~> 0.9, >= 0.9.24)
-    spring (2.1.0)
+    spring (2.1.1)
     sprockets (4.0.2)
       concurrent-ruby (~> 1.0)
       rack (> 1, < 3)