diff --git a/Gemfile.lock b/Gemfile.lock
index 124dc2f..05faaaf 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -1,36 +1,36 @@
 GEM
   remote: https://rubygems.org/
   specs:
-    diff-lcs (1.5.0)
+    diff-lcs (1.5.1)
     docile (1.1.5)
-    json (2.6.3)
-    psych (5.1.0)
+    json (2.7.1)
+    psych (5.1.2)
       stringio
-    rake (13.0.6)
-    rdoc (6.5.0)
+    rake (13.1.0)
+    rdoc (6.6.2)
       psych (>= 4.0.0)
     redcarpet (3.6.0)
-    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)
     simplecov (0.15.1)
       docile (~> 1.1.0)
       json (>= 1.8, < 3)
       simplecov-html (~> 0.10.0)
     simplecov-html (0.10.2)
-    stringio (3.0.7)
+    stringio (3.1.0)
     syntax (1.2.2)
-    yard (0.9.34)
+    yard (0.9.35)
 
 PLATFORMS
   ruby