diff --git a/Gemfile.lock b/Gemfile.lock
index 247fc3c..66a9f61 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -42,18 +42,18 @@ GEM
       activesupport (>= 3.0.0, < 5)
       multi_json (~> 1.2)
     json (1.8.1)
-    macaddr (1.7.1)
-      systemu (~> 2.6.2)
     mail (2.5.4)
       mime-types (~> 1.16)
       treetop (~> 1.4.8)
     mime-types (1.25.1)
-    mini_portile (0.6.2)
+    mini_portile2 (2.8.0)
     minitest (5.5.0)
     multi_json (1.10.1)
-    nokogiri (1.6.6.2)
-      mini_portile (~> 0.6.0)
+    nokogiri (1.13.9)
+      mini_portile2 (~> 2.8.0)
+      racc (~> 1.4)
     polyglot (0.3.5)
+    racc (1.6.0)
     rack (1.5.2)
     rack-test (0.6.2)
       rack (>= 1.0)
@@ -73,6 +73,8 @@ GEM
       rake (>= 0.8.7)
       thor (>= 0.18.1, < 2.0)
     rake (10.4.2)
+    ruby-saml (1.7.2)
+      nokogiri (>= 1.5.10)
     sass (3.2.19)
     sass-rails (4.0.5)
       railties (>= 4.0.0, < 5.0)
@@ -91,7 +93,6 @@ GEM
       activesupport (>= 3.0)
       sprockets (>= 2.8, < 4.0)
     sqlite3 (1.3.10)
-    systemu (2.6.5)
     thor (0.19.1)
     thread_safe (0.3.4)
     tilt (1.4.1)
@@ -100,8 +101,6 @@ GEM
       polyglot (>= 0.3.1)
     tzinfo (1.2.2)
       thread_safe (~> 0.1)
-    uuid (2.3.7)
-      macaddr (~> 1.0)
 
 PLATFORMS
   ruby
@@ -110,7 +109,7 @@ DEPENDENCIES
   byebug
   jbuilder (~> 2.0)
   rails (= 4.1.5)
-  ruby-saml (~> 1.3.0)
+  ruby-saml (~> 1.7.0)
   sass-rails (~> 4.0.3)
   spring
   sqlite3