diff --git a/Gemfile b/Gemfile
index cbb3cbc61..dae583420 100644
--- a/Gemfile
+++ b/Gemfile
@@ -146,6 +146,9 @@ gem "faraday", "~> 1.0"
 # Needed for getting boundary data into maps
 gem "rgeo-geojson"
 
+# For compressing javascript
+gem "terser"
+
 group :test do
   gem "capybara"
   # For some reason upgrading to email_spec 2.2.1 completely breaks things for us
diff --git a/Gemfile.lock b/Gemfile.lock
index 8ae60c0ee..0facdf7be 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -696,6 +696,8 @@ GEM
       yard-sorbet
     terminal-table (3.0.2)
       unicode-display_width (>= 1.1.1, < 3)
+    terser (1.2.3)
+      execjs (>= 0.3.0, < 3)
     thor (1.3.1)
     thread_safe (0.3.6)
     tilt (2.4.0)
@@ -854,6 +856,7 @@ DEPENDENCIES
   sprockets (~> 3.0)
   tailwindcss-rails (~> 2.0)
   tapioca
+  terser
   timecop
   typhoeus
   uglifier
diff --git a/config/environments/production.rb b/config/environments/production.rb
index fdd4fe148..d46d4476b 100644
--- a/config/environments/production.rb
+++ b/config/environments/production.rb
@@ -40,7 +40,7 @@
   }
 
   # Compress JavaScripts and CSS.
-  config.assets.js_compressor = Uglifier.new(harmony: true)
+  config.assets.js_compressor = :terser
   
   # Compress CSS using a preprocessor.
   # config.assets.css_compressor = :sass