diff --git a/Gemfile.lock b/Gemfile.lock
index 92aa7eb..40b5c88 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -4,9 +4,9 @@ GEM
     addressable (2.5.0)
       public_suffix (~> 2.0, >= 2.0.2)
     colorator (1.1.0)
-    ffi (1.9.14)
+    ffi (1.9.17)
     forwardable-extended (2.6.0)
-    jekyll (3.3.1)
+    jekyll (3.4.0)
       addressable (~> 2.4)
       colorator (~> 1.0)
       jekyll-sass-converter (~> 1.0)
@@ -17,18 +17,18 @@ GEM
       pathutil (~> 0.9)
       rouge (~> 1.7)
       safe_yaml (~> 1.0)
-    jekyll-feed (0.8.0)
+    jekyll-feed (0.9.1)
       jekyll (~> 3.3)
     jekyll-multiple-languages-plugin (1.5.1)
       jekyll (>= 2.0, < 4.0)
     jekyll-paginate (1.1.0)
     jekyll-sass-converter (1.5.0)
       sass (~> 3.4)
-    jekyll-sitemap (0.12.0)
+    jekyll-sitemap (1.0.0)
       jekyll (~> 3.3)
     jekyll-watch (1.5.0)
       listen (~> 3.0, < 3.1)
-    kramdown (1.13.1)
+    kramdown (1.13.2)
     liquid (3.0.6)
     listen (3.0.8)
       rb-fsevent (~> 0.9, >= 0.9.4)
@@ -38,9 +38,9 @@ GEM
       jekyll (~> 3.3)
     pathutil (0.14.0)
       forwardable-extended (~> 2.6)
-    public_suffix (2.0.4)
+    public_suffix (2.0.5)
     rb-fsevent (0.9.8)
-    rb-inotify (0.9.7)
+    rb-inotify (0.9.8)
       ffi (>= 0.5.0)
     rouge (1.11.1)
     safe_yaml (1.0.4)
@@ -50,15 +50,15 @@ PLATFORMS
   ruby
 
 DEPENDENCIES
-  jekyll (= 3.3.1)
-  jekyll-feed (~> 0.6)
-  jekyll-multiple-languages-plugin
+  jekyll (= 3.4.0)
+  jekyll-feed (= 0.9.1)
+  jekyll-multiple-languages-plugin (= 1.5.1)
   jekyll-paginate
   jekyll-sitemap
-  minima (~> 2.0)
+  minima (= 2.1.0)
 
 RUBY VERSION
-   ruby 2.0.0p648
+   ruby 2.4.0p0
 
 BUNDLED WITH
    1.14.3