diff --git a/Gemfile.lock b/Gemfile.lock
index c1f205d..5a73eff 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -9,7 +9,7 @@ GEM
   specs:
     concurrent-ruby (1.2.2)
     cool.io (1.8.0)
-    diff-lcs (1.5.0)
+    diff-lcs (1.5.1)
     fluentd (1.16.2)
       bundler
       cool.io (>= 1.4.5, < 2.0.0)
@@ -25,19 +25,19 @@ GEM
     http_parser.rb (0.8.0)
     msgpack (1.7.2)
     power_assert (2.0.3)
-    rspec (3.12.0)
-      rspec-core (~> 3.12.0)
-      rspec-expectations (~> 3.12.0)
-      rspec-mocks (~> 3.12.0)
-    rspec-core (3.12.2)
-      rspec-support (~> 3.12.0)
-    rspec-expectations (3.12.3)
+    rspec (3.13.0)
+      rspec-core (~> 3.13.0)
+      rspec-expectations (~> 3.13.0)
+      rspec-mocks (~> 3.13.0)
+    rspec-core (3.13.0)
+      rspec-support (~> 3.13.0)
+    rspec-expectations (3.13.0)
       diff-lcs (>= 1.2.0, < 2.0)
-      rspec-support (~> 3.12.0)
-    rspec-mocks (3.12.6)
+      rspec-support (~> 3.13.0)
+    rspec-mocks (3.13.0)
       diff-lcs (>= 1.2.0, < 2.0)
-      rspec-support (~> 3.12.0)
-    rspec-support (3.12.1)
+      rspec-support (~> 3.13.0)
+    rspec-support (3.13.1)
     serverengine (2.3.2)
       sigdump (~> 0.2.2)
     sigdump (0.2.5)