diff --git a/Gemfile.lock b/Gemfile.lock
index 85102523649..d41d3718c74 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -343,7 +343,8 @@ GEM
     pry-stack_explorer (0.6.1)
       binding_of_caller (~> 1.0)
       pry (~> 0.13)
-    psych (5.2.0)
+    psych (5.2.1)
+      date
       stringio
     public_suffix (6.0.1)
     puma (6.5.0)