diff --git a/Gemfile.lock b/Gemfile.lock
index 76bc686..a36e401 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -38,7 +38,7 @@ GEM
     i18n (1.14.6)
       concurrent-ruby (~> 1.0)
     io-console (0.8.0)
-    irb (1.14.2)
+    irb (1.14.3)
       rdoc (>= 4.0.0)
       reline (>= 0.4.2)
     json (2.9.0)
@@ -51,13 +51,13 @@ GEM
     parser (3.3.6.0)
       ast (~> 2.4.1)
       racc
-    psych (5.2.1)
+    psych (5.2.2)
       date
       stringio
     racc (1.8.1)
     rainbow (3.1.1)
     rake (13.2.1)
-    rdoc (6.9.1)
+    rdoc (6.10.0)
       psych (>= 4.0.0)
     regexp_parser (2.9.3)
     reissue (0.3.0)