diff --git a/Gemfile b/Gemfile
index a7fd3ae..6da3df0 100644
--- a/Gemfile
+++ b/Gemfile
@@ -43,7 +43,7 @@ gem 'byebug', '3.5.1'
 
 gem 'devise', '3.4.1'
 
-gem "paperclip", "3.5.4"
+gem "paperclip", "4.3.7"
 
 gem 'formtastic', "3.1.3"
 
diff --git a/Gemfile.lock b/Gemfile.lock
index 0905067..c1e760d 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -118,7 +118,7 @@ GEM
       execjs
     coffee-script-source (1.12.2)
     columnize (0.9.0)
-    concurrent-ruby (1.1.4)
+    concurrent-ruby (1.1.5)
     database_cleaner (1.7.0)
     debugger-linecache (1.2.0)
     devise (3.4.1)
@@ -188,9 +188,10 @@ GEM
       treetop (~> 1.4.8)
     method_source (0.9.2)
     mime-types (1.25.1)
+    mimemagic (0.3.0)
     mini_mime (1.0.1)
     mini_portile2 (2.1.0)
-    multi_json (1.13.1)
+    multi_json (1.14.1)
     nenv (0.3.0)
     nokogiri (1.7.0.1)
       mini_portile2 (~> 2.1.0)
@@ -202,11 +203,12 @@ GEM
     paper_trail (3.0.6)
       activerecord (>= 3.0, < 5.0)
       activesupport (>= 3.0, < 5.0)
-    paperclip (3.5.4)
-      activemodel (>= 3.0.0)
-      activesupport (>= 3.0.0)
-      cocaine (~> 0.5.3)
+    paperclip (4.3.7)
+      activemodel (>= 3.2.0)
+      activesupport (>= 3.2.0)
+      cocaine (~> 0.5.5)
       mime-types
+      mimemagic (= 0.3.0)
     polyglot (0.3.5)
     power_assert (1.1.3)
     pry (0.12.2)
@@ -340,7 +342,7 @@ DEPENDENCIES
   mail (= 2.5.4)
   nokogiri (= 1.7.0.1)
   paper_trail (= 3.0.6)
-  paperclip (= 3.5.4)
+  paperclip (= 4.3.7)
   quiet_assets
   rails (= 3.2.17)
   rb-inotify (= 0.9.8)