diff --git a/Gemfile.lock b/Gemfile.lock
index ba353f3..6857238 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -64,7 +64,7 @@ GEM
       execjs
     coffee-script-source (1.12.2)
     concurrent-ruby (1.0.5)
-    crass (1.0.4)
+    crass (1.0.5)
     cucumber (3.1.2)
       builder (>= 2.1.2)
       cucumber-core (~> 3.2.0)
@@ -115,7 +115,7 @@ GEM
       railties (>= 4.2.0)
       thor (>= 0.14, < 2.0)
     kgio (2.11.2)
-    loofah (2.2.2)
+    loofah (2.3.1)
       crass (~> 1.0.2)
       nokogiri (>= 1.5.9)
     mail (2.7.0)
@@ -125,12 +125,12 @@ GEM
       mime-types-data (~> 3.2015)
     mime-types-data (3.2018.0812)
     mini_mime (1.0.1)
-    mini_portile2 (2.3.0)
+    mini_portile2 (2.4.0)
     minitest (5.11.3)
     multi_json (1.13.1)
     multi_test (0.1.2)
-    nokogiri (1.8.4)
-      mini_portile2 (~> 2.3.0)
+    nokogiri (1.10.5)
+      mini_portile2 (~> 2.4.0)
     pry (0.11.3)
       coderay (~> 1.1.0)
       method_source (~> 0.9.0)