diff --git a/Gemfile.lock b/Gemfile.lock
index 0a359ac307..37b1c67e33 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -104,8 +104,8 @@ GEM
     i18n (1.14.1)
       concurrent-ruby (~> 1.0)
     io-console (0.7.2)
-    irb (1.12.0)
-      rdoc
+    irb (1.13.1)
+      rdoc (>= 4.0.0)
       reline (>= 0.4.2)
     json (2.7.2)
     kramdown (2.4.0)
@@ -184,7 +184,7 @@ GEM
     rdoc (6.6.3.1)
       psych (>= 4.0.0)
     regexp_parser (2.9.0)
-    reline (0.4.3)
+    reline (0.5.5)
       io-console (~> 0.5)
     rexml (3.2.6)
     rgl (0.6.6)