diff --git a/Gemfile b/Gemfile
index 9067966..9aca0c6 100644
--- a/Gemfile
+++ b/Gemfile
@@ -25,7 +25,7 @@ gem 'rdf'
 gem 'rdf-trig'
 
 # update for security fixes
-gem 'loofah', '~> 2.3', '>= 2.3.1'
+gem 'loofah', '~> 2.19'
 
 group :development, :test do
   # Call 'byebug' anywhere in the code to stop execution and get a debugger console
diff --git a/Gemfile.lock b/Gemfile.lock
index def262e..ecd4bf2 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -95,7 +95,7 @@ GEM
       rb-fsevent (~> 0.9, >= 0.9.4)
       rb-inotify (~> 0.9, >= 0.9.7)
       ruby_dep (~> 1.2)
-    loofah (2.4.0)
+    loofah (2.19.1)
       crass (~> 1.0.2)
       nokogiri (>= 1.5.9)
     mail (2.7.1)
@@ -106,17 +106,21 @@ GEM
     mime-types (3.3.1)
       mime-types-data (~> 3.2015)
     mime-types-data (3.2019.1009)
-    mimemagic (0.3.3)
+    mimemagic (0.3.10)
+      nokogiri (~> 1)
+      rake
     mini_mime (1.0.2)
-    mini_portile2 (2.4.0)
+    mini_portile2 (2.6.1)
     minitest (5.14.0)
     msgpack (1.3.1)
     multi_xml (0.6.0)
     nio4r (2.5.2)
-    nokogiri (1.10.7)
-      mini_portile2 (~> 2.4.0)
+    nokogiri (1.12.5)
+      mini_portile2 (~> 2.6.1)
+      racc (~> 1.4)
     pg (1.2.2)
     puma (3.12.2)
+    racc (1.6.1)
     rack (2.1.1)
     rack-cors (1.1.1)
       rack (>= 2.0.0)
@@ -227,7 +231,7 @@ DEPENDENCIES
   jbuilder (~> 2.5)
   jquery-rails
   listen (>= 3.0.5, < 3.2)
-  loofah (~> 2.3, >= 2.3.1)
+  loofah (~> 2.19)
   pg (>= 0.18, < 2.0)
   puma (~> 3.11)
   rack-cors