diff --git a/Gemfile.lock b/Gemfile.lock
index 74c7830..06874f5 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -60,6 +60,7 @@ GEM
       http_parser.rb (~> 0)
     email_validator (2.2.4)
       activemodel
+    erb (5.0.2)
     eventmachine (1.2.7)
     facets (3.1.0)
     factory_bot (6.5.1)
@@ -196,7 +197,7 @@ GEM
     power_assert (2.0.5)
     prism (1.4.0)
     profile (0.4.0)
-    psych (5.2.3)
+    psych (5.2.6)
       date
       stringio
     public_suffix (6.0.1)
@@ -214,8 +215,10 @@ GEM
     rb-fsevent (0.11.2)
     rb-inotify (0.11.1)
       ffi (~> 1.0)
-    rdoc (6.13.1)
+    rdoc (6.15.0)
+      erb
       psych (>= 4.0.0)
+      tsort
     recursive-open-struct (1.3.1)
       ostruct
     redis (4.8.1)
@@ -272,7 +275,7 @@ GEM
     simplecov-html (0.13.1)
     simplecov_json_formatter (0.1.4)
     slack-notifier (2.4.0)
-    stringio (3.1.6)
+    stringio (3.1.7)
     swd (2.0.3)
       activesupport (>= 3)
       attr_required (>= 0.0.5)
@@ -283,6 +286,7 @@ GEM
     test-unit (3.6.8)
       power_assert
     timeout (0.4.3)
+    tsort (0.2.0)
     tzinfo (2.0.6)
       concurrent-ruby (~> 1.0)
     unicode-display_width (2.6.0)