diff --git a/rails-material/Gemfile.lock b/rails-material/Gemfile.lock
index 7920fd7..35fedd0 100644
--- a/rails-material/Gemfile.lock
+++ b/rails-material/Gemfile.lock
@@ -79,7 +79,7 @@ GEM
     coffee-script-source (1.12.2)
     commonjs (0.2.7)
     concurrent-ruby (1.0.5)
-    crass (1.0.2)
+    crass (1.0.5)
     devise (4.3.0)
       bcrypt (~> 3.0)
       orm_adapter (~> 0.1)
@@ -138,7 +138,7 @@ GEM
       rb-fsevent (~> 0.9, >= 0.9.4)
       rb-inotify (~> 0.9, >= 0.9.7)
       ruby_dep (~> 1.2)
-    loofah (2.1.1)
+    loofah (2.3.1)
       crass (~> 1.0.2)
       nokogiri (>= 1.5.9)
     mail (2.6.6)
@@ -151,7 +151,7 @@ GEM
       mime-types-data (~> 3.2015)
     mime-types-data (3.2016.0521)
     mini_mime (0.1.4)
-    mini_portile2 (2.3.0)
+    mini_portile2 (2.4.0)
     minitest (5.10.3)
     momentjs-rails (2.20.1)
       railties (>= 3.1)
@@ -160,10 +160,10 @@ GEM
     multipart-post (2.0.0)
     netrc (0.11.0)
     nio4r (2.1.0)
-    nokogiri (1.8.1)
-      mini_portile2 (~> 2.3.0)
-    nokogiri (1.8.1-x86-mingw32)
-      mini_portile2 (~> 2.3.0)
+    nokogiri (1.10.5)
+      mini_portile2 (~> 2.4.0)
+    nokogiri (1.10.5-x86-mingw32)
+      mini_portile2 (~> 2.4.0)
     normalize-rails (4.1.1)
     oauth2 (1.4.0)
       faraday (>= 0.8, < 0.13)