diff --git a/Gemfile.lock b/Gemfile.lock
index 3fc7e561..0c7d18d2 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -101,9 +101,9 @@ GEM
     connection_pool (2.4.1)
     crass (1.0.6)
     date (3.3.4)
-    debug (1.8.0)
-      irb (>= 1.5.0)
-      reline (>= 0.3.1)
+    debug (1.9.0)
+      irb (~> 1.10)
+      reline (>= 0.3.8)
     diff-lcs (1.5.0)
     drb (2.2.0)
       ruby2_keywords