diff --git a/Gemfile.lock b/Gemfile.lock
index 6b4f059..764b925 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -47,15 +47,16 @@ GEM
       xpath (~> 3.2)
     concurrent-ruby (1.3.4)
     connection_pool (2.4.1)
-    debug (1.9.2)
+    date (3.4.1)
+    debug (1.10.0)
       irb (~> 1.10)
       reline (>= 0.3.8)
     diff-lcs (1.5.1)
     drb (2.2.1)
     i18n (1.14.6)
       concurrent-ruby (~> 1.0)
-    io-console (0.7.2)
-    irb (1.14.1)
+    io-console (0.8.0)
+    irb (1.14.3)
       rdoc (>= 4.0.0)
       reline (>= 0.4.2)
     json (2.8.2)
@@ -77,7 +78,8 @@ GEM
     parser (3.3.6.0)
       ast (~> 2.4.1)
       racc
-    psych (5.2.0)
+    psych (5.2.2)
+      date
       stringio
     public_suffix (6.0.1)
     puma (6.5.0)
@@ -90,15 +92,15 @@ GEM
       rack (>= 3.0.0, < 4)
     rack-session (2.0.0)
       rack (>= 3.0.0)
-    rack-test (2.1.0)
+    rack-test (2.2.0)
       rack (>= 1.3)
     rackup (2.2.1)
       rack (>= 3)
     rainbow (3.1.1)
-    rdoc (6.8.1)
+    rdoc (6.10.0)
       psych (>= 4.0.0)
     regexp_parser (2.9.2)
-    reline (0.5.11)
+    reline (0.6.0)
       io-console (~> 0.5)
     rexml (3.3.9)
     rspec (3.13.0)