diff --git a/Gemfile.lock b/Gemfile.lock
index e536486..80dac2f 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -184,7 +184,7 @@ GEM
     iso8601 (0.9.1)
     jwt (2.4.1)
     liner (0.2.4)
-    loofah (2.18.0)
+    loofah (2.19.1)
       crass (~> 1.0.2)
       nokogiri (>= 1.5.9)
     mechanize (2.8.5)
@@ -215,7 +215,7 @@ GEM
       connection_pool (~> 2.2)
     net_http_timeout_errors (0.3.5)
     netrc (0.11.0)
-    nokogiri (1.13.6-x86_64-darwin)
+    nokogiri (1.13.10-x86_64-linux)
       racc (~> 1.4)
     numerizer (0.1.1)
     oauth2 (1.4.9)
@@ -240,13 +240,13 @@ GEM
       ttfunk
     persist (1.0.0)
     public_suffix (4.0.7)
-    racc (1.6.0)
+    racc (1.6.1)
     rack (2.2.3.1)
     rails-dom-testing (2.0.3)
       activesupport (>= 4.2.0)
       nokogiri (>= 1.6)
-    rails-html-sanitizer (1.4.3)
-      loofah (~> 2.3)
+    rails-html-sanitizer (1.4.4)
+      loofah (~> 2.19, >= 2.19.1)
     rake (10.5.0)
     recursive-open-struct (1.1.3)
     reline (0.3.1)
@@ -313,7 +313,7 @@ GEM
       nokogiri
 
 PLATFORMS
-  ruby
+  x86_64-linux
 
 DEPENDENCIES
   bundler (~> 2.3)