diff --git a/Dockerfile b/Dockerfile
index e53f982..7d9e6cd 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -6,7 +6,7 @@ ADD Gemfile.lock /app/
 WORKDIR /app
 
 # Install required packages
-RUN apk add --no-cache build-base nodejs git mysql-dev postgresql-dev tzdata
+RUN apk add --no-cache build-base nodejs git mysql-dev postgresql-dev tzdata shared-mime-info
 
 # Upgrades bundler versions
 RUN gem install bundler
diff --git a/Dockerfile-dev b/Dockerfile-dev
index b70cded..faabed4 100644
--- a/Dockerfile-dev
+++ b/Dockerfile-dev
@@ -5,7 +5,7 @@ WORKDIR /app
 RUN \
   apt-get update && \
   curl -sL https://deb.nodesource.com/setup_6.x | bash - && \
-  apt-get install -y nodejs build-essential libpq-dev && \
+  apt-get install -y nodejs build-essential libpq-dev shared-mime-info && \
   apt-get clean && rm -rf /var/lib/apt/lists/* /tmp/* /var/tmp/*
 
 RUN gem install bundler -v 2.0.1
diff --git a/Gemfile b/Gemfile
index 1921779..798fb5a 100644
--- a/Gemfile
+++ b/Gemfile
@@ -26,6 +26,8 @@ gem 'sidekiq'
 gem 'sidekiq-scheduler'
 gem 'spreadsheet'
 
+gem 'mimemagic', '~> 0.3.10'
+
 group :development, :test do
   gem 'dotenv-rails'
 
diff --git a/Gemfile.lock b/Gemfile.lock
index 1c9c329..0fcf4ed 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -200,7 +200,9 @@ GEM
     marcel (0.3.3)
       mimemagic (~> 0.3.2)
     method_source (0.9.2)
-    mimemagic (0.3.3)
+    mimemagic (0.3.10)
+      nokogiri (~> 1)
+      rake
     mini_mime (1.0.2)
     mini_portile2 (2.4.0)
     minitest (5.14.1)
@@ -392,6 +394,7 @@ DEPENDENCIES
   interactor-rails
   kaminari
   listen (>= 3.0.5, < 3.2)
+  mimemagic (~> 0.3.10)
   pg (>= 0.18, < 2.0)
   pry-rails
   puma (~> 3.12)