diff --git a/Gemfile.lock b/Gemfile.lock
index ed7246d..ec0e07c 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -39,7 +39,7 @@ GEM
       selenium-webdriver (~> 2.0)
       xpath (~> 0.1.4)
     childprocess (0.3.5)
-      ffi (>= 1.0.6, ~> 1.0)
+      ffi (~> 1.0, >= 1.0.6)
     erubis (2.7.0)
     ffi (1.1.5)
     hike (1.2.1)
@@ -53,9 +53,13 @@ GEM
       mime-types (~> 1.16)
       treetop (~> 1.4.8)
     mime-types (1.19)
+    mini_portile2 (2.8.0)
     multi_json (1.3.6)
-    nokogiri (1.5.5)
+    nokogiri (1.13.9)
+      mini_portile2 (~> 2.8.0)
+      racc (~> 1.4)
     polyglot (0.3.3)
+    racc (1.6.0)
     rack (1.4.1)
     rack-cache (1.2)
       rack (>= 0.4)
@@ -77,7 +81,7 @@ GEM
       rack-ssl (~> 1.3.2)
       rake (>= 0.8.7)
       rdoc (~> 3.4)
-      thor (< 2.0, >= 0.14.6)
+      thor (>= 0.14.6, < 2.0)
     rake (0.9.2.2)
     rdoc (3.12)
       json (~> 1.4)
@@ -90,7 +94,7 @@ GEM
     sprockets (2.1.3)
       hike (~> 1.2)
       rack (~> 1.0)
-      tilt (!= 1.3.0, ~> 1.1)
+      tilt (~> 1.1, != 1.3.0)
     sqlite3 (1.3.6)
     sqlite3-ruby (1.3.3)
       sqlite3 (>= 1.3.3)