diff --git a/Gemfile.lock b/Gemfile.lock
index bb37f26cd..dab5161a4 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -372,7 +372,8 @@ GEM
     pry (0.14.2)
       coderay (~> 1.1)
       method_source (~> 1.0)
-    psych (5.2.0)
+    psych (5.2.2)
+      date
       stringio
     public_suffix (6.0.1)
     puma (6.5.0)