diff --git a/Gemfile.lock b/Gemfile.lock
index 80ac8c3..c265d98 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -30,7 +30,7 @@ GEM
       faraday (~> 2.0)
     hashdiff (1.2.1)
     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)