diff --git a/Quiz-LTI/Gemfile.lock b/Quiz-LTI/Gemfile.lock
index 20d46d5..51e3b65 100644
--- a/Quiz-LTI/Gemfile.lock
+++ b/Quiz-LTI/Gemfile.lock
@@ -89,12 +89,12 @@ GEM
       mini_mime (>= 0.1.1)
     method_source (0.9.0)
     mini_mime (0.1.4)
-    mini_portile2 (2.3.0)
+    mini_portile2 (2.4.0)
     minitest (5.10.3)
     multi_json (1.12.2)
     nio4r (2.1.0)
-    nokogiri (1.8.1)
-      mini_portile2 (~> 2.3.0)
+    nokogiri (1.10.4)
+      mini_portile2 (~> 2.4.0)
     oauth (0.5.3)
     public_suffix (3.0.0)
     puma (3.10.0)
@@ -193,6 +193,7 @@ DEPENDENCIES
   ims-lti (~> 1.1.8)
   jbuilder (~> 2.5)
   listen (>= 3.0.5, < 3.2)
+  nokogiri (~> 1.10.4)
   puma (~> 3.7)
   rails (~> 5.1.4)
   sass-rails (~> 5.0)