diff --git a/Gemfile.lock b/Gemfile.lock
index c8e2fed..4f32345 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -13,9 +13,9 @@ GEM
       reline (>= 0.3.8)
     diff-lcs (1.6.2)
     docile (1.4.1)
-    erb (6.0.1)
+    erb (6.0.4)
     io-console (0.8.2)
-    irb (1.17.0)
+    irb (1.18.0)
       pp (>= 0.6.0)
       prism (>= 1.3.0)
       rdoc (>= 4.0.0)