diff --git a/Gemfile.lock b/Gemfile.lock
index 44fa21f..42dd41e 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -69,7 +69,7 @@ GEM
     concurrent-ruby (1.1.5)
     crack (0.4.5)
       rexml
-    crass (1.0.4)
+    crass (1.0.6)
     diff-lcs (1.3)
     ecdsa (1.1.0)
     erubi (1.8.0)
@@ -78,7 +78,7 @@ GEM
     hashdiff (1.0.1)
     i18n (1.6.0)
       concurrent-ruby (~> 1.0)
-    loofah (2.2.3)
+    loofah (2.9.1)
       crass (~> 1.0.2)
       nokogiri (>= 1.5.9)
     mail (2.7.1)
@@ -90,12 +90,14 @@ GEM
       nokogiri (~> 1)
       rake
     mini_mime (1.1.0)
-    mini_portile2 (2.4.0)
+    mini_portile2 (2.5.1)
     minitest (5.11.3)
     nio4r (2.5.7)
-    nokogiri (1.10.4)
-      mini_portile2 (~> 2.4.0)
+    nokogiri (1.11.5)
+      mini_portile2 (~> 2.5.0)
+      racc (~> 1.4)
     public_suffix (4.0.6)
+    racc (1.5.2)
     rack (2.0.7)
     rack-test (1.1.0)
       rack (>= 1.0, < 3)