diff --git a/Gemfile.lock b/Gemfile.lock
index a1653a099..8362b4e05 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -129,12 +129,10 @@ GEM
     capybara-selenium (0.0.6)
       capybara
       selenium-webdriver
-    carrierwave (0.11.2)
-      activemodel (>= 3.2.0)
-      activesupport (>= 3.2.0)
-      json (>= 1.7)
+    carrierwave (1.2.3)
+      activemodel (>= 4.0.0)
+      activesupport (>= 4.0.0)
       mime-types (>= 1.16)
-      mimemagic (>= 0.3.0)
     carrierwave-i18n (0.2.0)
     case_transform (0.2)
       activesupport
@@ -151,7 +149,7 @@ GEM
       coffee-script-source
       execjs
     coffee-script-source (1.12.2)
-    concurrent-ruby (1.0.5)
+    concurrent-ruby (1.1.3)
     copy_carrierwave_file (1.3.0)
       carrierwave (>= 0.9)
     crack (0.4.3)
@@ -483,9 +481,9 @@ GEM
     marcel (0.3.2)
       mimemagic (~> 0.3.2)
     method_source (0.9.0)
-    mime-types (3.1)
+    mime-types (3.2.2)
       mime-types-data (~> 3.2015)
-    mime-types-data (3.2016.0521)
+    mime-types-data (3.2018.0812)
     mimemagic (0.3.2)
     mini_mime (1.0.1)
     mini_portile2 (2.3.0)
@@ -900,4 +898,4 @@ DEPENDENCIES
   zxcvbn-ruby
 
 BUNDLED WITH
-   1.16.6
+   1.17.1
diff --git a/app/uploaders/piece_justificative_uploader.rb b/app/uploaders/piece_justificative_uploader.rb
index 83d277c8f..f4fb1ce67 100644
--- a/app/uploaders/piece_justificative_uploader.rb
+++ b/app/uploaders/piece_justificative_uploader.rb
@@ -33,10 +33,6 @@ class PieceJustificativeUploader < BaseUploader
     filename
   end
 
-  def original_filename
-    model.original_filename
-  end
-
   private
 
   def secure_token