diff --git a/Gemfile.lock b/Gemfile.lock
index 1fa8b86..4dcede9 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -63,14 +63,18 @@ GEM
     markup_validity (1.1.0)
       nokogiri (>= 1.3.1)
     mime-types (1.16)
+    mini_portile2 (2.8.0)
     mustache (0.12.0)
-    nokogiri (1.4.4)
+    nokogiri (1.13.6)
+      mini_portile2 (~> 2.8.0)
+      racc (~> 1.4)
     notifiers (1.1.0)
     oily_png (0.3.0)
       chunky_png (~> 0.12)
     polyglot (0.3.1)
     postmark (0.9.5)
       tmail
+    racc (1.6.0)
     rack (1.2.1)
     rack-test (0.5.7)
       rack (>= 1.0)