diff --git a/Gemfile b/Gemfile
index 5916183e..a651d24b 100644
--- a/Gemfile
+++ b/Gemfile
@@ -28,7 +28,7 @@ gem "sassc-rails"
 gem "slim-rails"
 gem "sprockets"
 gem "sprockets-rails"
-gem "uglifier", ">= 1.0.3"
+gem "terser"
 
 # Authentication & Authorization
 gem "devise"
diff --git a/Gemfile.lock b/Gemfile.lock
index a8feea2f..9f754728 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -563,6 +563,8 @@ GEM
       standard
     stringio (3.2.0)
     temple (0.10.4)
+    terser (1.2.6)
+      execjs (>= 0.3.0, < 3)
     test-prof (1.5.2)
     thor (1.5.0)
     tilt (2.7.0)
@@ -572,8 +574,6 @@ GEM
       bigdecimal (~> 3.1)
     tzinfo (2.0.6)
       concurrent-ruby (~> 1.0)
-    uglifier (4.2.1)
-      execjs (>= 0.3.0, < 3)
     unicode-display_width (3.2.0)
       unicode-emoji (~> 4.1)
     unicode-emoji (4.2.0)
@@ -689,8 +689,8 @@ DEPENDENCIES
   stackprof
   standard (>= 1.35.1)
   standardrb
+  terser
   test-prof
-  uglifier (>= 1.0.3)
   valid_email
   vcr
   web-console
@@ -918,6 +918,7 @@ CHECKSUMS
   standardrb (1.0.1) sha256=7a1328be429f4e97a97e357e2446f3509e80164a59ff00bc6a4daa78e3351f2c
   stringio (3.2.0) sha256=c37cb2e58b4ffbd33fe5cd948c05934af997b36e0b6ca6fdf43afa234cf222e1
   temple (0.10.4) sha256=b7a1e94b6f09038ab0b6e4fe0126996055da2c38bec53a8a336f075748fff72c
+  terser (1.2.6) sha256=6ddf00b93df7015b07e2b9b149e74cd70fa7aa4f0f89a15d9922a6ebd13f37ab
   test-prof (1.5.2) sha256=185839fb7d3745b3770ec48e3e5718eff9e28c327a50a1e18a3a9ef1060f8576
   thor (1.5.0) sha256=e3a9e55fe857e44859ce104a84675ab6e8cd59c650a49106a05f55f136425e73
   tilt (2.7.0) sha256=0d5b9ba69f6a36490c64b0eee9f6e9aad517e20dcc848800a06eb116f08c6ab3
@@ -925,7 +926,6 @@ CHECKSUMS
   tsort (0.2.0) sha256=9650a793f6859a43b6641671278f79cfead60ac714148aabe4e3f0060480089f
   ttfunk (1.8.0) sha256=a7cbc7e489cc46e979dde04d34b5b9e4f5c8f1ee5fc6b1a7be39b829919d20ca
   tzinfo (2.0.6) sha256=8daf828cc77bcf7d63b0e3bdb6caa47e2272dcfaf4fbfe46f8c3a9df087a829b
-  uglifier (4.2.1) sha256=75d42b81b10bfd21e7a427fabb1d49ff5ea7bda3c4a5039ddb2a78d194c6f5aa
   unicode-display_width (3.2.0) sha256=0cdd96b5681a5949cdbc2c55e7b420facae74c4aaf9a9815eee1087cb1853c42
   unicode-emoji (4.2.0) sha256=519e69150f75652e40bf736106cfbc8f0f73aa3fb6a65afe62fefa7f80b0f80f
   uri (1.1.1) sha256=379fa58d27ffb1387eaada68c749d1426738bd0f654d812fcc07e7568f5c57c6
diff --git a/config/environments/production.rb b/config/environments/production.rb
index cfa63b27..c4498798 100644
--- a/config/environments/production.rb
+++ b/config/environments/production.rb
@@ -31,7 +31,7 @@
   }
 
   # Compress JavaScripts and CSS.
-  config.assets.js_compressor = Uglifier.new(harmony: true)
+  config.assets.js_compressor = :terser
   # config.assets.css_compressor = :sass
 
   # Do not fallback to assets pipeline if a precompiled asset is missed.