diff --git a/Gemfile b/Gemfile
index 0bd0601a67..05728a957a 100644
--- a/Gemfile
+++ b/Gemfile
@@ -27,9 +27,6 @@ gem "newrelic_rpm"
 
 # gem "decidim-user_extension", path: "decidim-user_extension"
 
-# When rails >= 5.2.5 or 6.0.3.6, you can remove this gem.
-gem "mimemagic", "~> 0.3.10"
-
 group :development, :test do
   gem "byebug", "~> 11.0", platform: :mri
   gem "figaro"
diff --git a/Gemfile.lock b/Gemfile.lock
index f9607b9ad3..062c707fa5 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -511,9 +511,6 @@ GEM
     mime-types (3.4.1)
       mime-types-data (~> 3.2015)
     mime-types-data (3.2022.0105)
-    mimemagic (0.3.10)
-      nokogiri (~> 1)
-      rake
     mini_magick (4.11.0)
     mini_mime (1.1.2)
     mini_portile2 (2.8.0)
@@ -837,7 +834,6 @@ DEPENDENCIES
   fog-aws
   letter_opener_web (~> 1.3)
   listen (~> 3.1)
-  mimemagic (~> 0.3.10)
   newrelic_rpm
   puma (>= 5.0.0)
   rspec-rails