diff --git a/Gemfile b/Gemfile
index bc32d458..4c21623c 100644
--- a/Gemfile
+++ b/Gemfile
@@ -20,7 +20,7 @@ gem 'aasm', '~> 5.2.0'
 gem 'acts_as_list'
 gem 'bcrypt', '~> 3.1.16'
 gem 'htmlentities'
-gem 'paperclip'
+gem "kt-paperclip", "~> 6.4", ">= 6.4.1"
 gem 'puma', '~> 5.5'
 gem 'rails_autolink'
 gem 'RedCloth'
diff --git a/Gemfile.lock b/Gemfile.lock
index 4174949a..f1d97d33 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -135,6 +135,12 @@ GEM
       rexml
     kramdown-parser-gfm (1.1.0)
       kramdown (~> 2.0)
+    kt-paperclip (6.4.1)
+      activemodel (>= 4.2.0)
+      activesupport (>= 4.2.0)
+      mime-types
+      mimemagic (~> 0.3.0)
+      terrapin (~> 0.6.0)
     libv8 (3.16.14.19)
     listen (3.7.0)
       rb-fsevent (~> 0.10, >= 0.10.3)
@@ -146,9 +152,9 @@ GEM
       mini_mime (>= 0.1.1)
     marcel (1.0.2)
     method_source (1.0.0)
-    mime-types (3.3.1)
+    mime-types (3.4.1)
       mime-types-data (~> 3.2015)
-    mime-types-data (3.2020.1104)
+    mime-types-data (3.2021.1115)
     mimemagic (0.3.10)
       nokogiri (~> 1)
       rake
@@ -162,12 +168,6 @@ GEM
     nokogiri (1.12.5)
       mini_portile2 (~> 2.6.1)
       racc (~> 1.4)
-    paperclip (6.1.0)
-      activemodel (>= 4.2.0)
-      activesupport (>= 4.2.0)
-      mime-types
-      mimemagic (~> 0.3.0)
-      terrapin (~> 0.6.0)
     parallel (1.21.0)
     parser (3.1.0.0)
       ast (~> 2.4.1)
@@ -336,11 +336,11 @@ DEPENDENCIES
   i18n-tasks (~> 0.9.37)
   jquery-rails (~> 4.4)
   jquery-ui-rails (~> 6.0.1)
+  kt-paperclip (~> 6.4, >= 6.4.1)
   listen
   minitest-stub-const
   mocha
   mysql2 (~> 0.5.3)
-  paperclip
   pg (~> 1.2.3)
   puma (~> 5.5)
   rack-mini-profiler