diff --git a/Gemfile b/Gemfile
index e4bae70d1..821e04512 100644
--- a/Gemfile
+++ b/Gemfile
@@ -85,7 +85,6 @@ gem 'simple_spark'
 gem 'sparkpost_rails'
 gem 'httparty'
 gem 'rollbar', '~> 2.8'
-gem 'skylight'
 gem 'rubyzip', '>= 1.3.0'
 gem 'rails_12factor', group: :production
 
diff --git a/Gemfile.lock b/Gemfile.lock
index 56bc4528d..7c6976132 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -379,10 +379,6 @@ GEM
       docile (~> 1.1)
       simplecov-html (~> 0.11)
     simplecov-html (0.12.2)
-    skylight (4.3.0)
-      skylight-core (= 4.3.0)
-    skylight-core (4.3.0)
-      activesupport (>= 4.2.0)
     sparkpost_rails (1.5.2)
       rails (>= 4.0, < 6.1)
     spring (2.1.0)
@@ -492,7 +488,6 @@ DEPENDENCIES
   simple_form
   simple_spark
   simplecov
-  skylight
   sparkpost_rails
   spring
   spring-watcher-listen (~> 2.0.0)
diff --git a/docs/deployment-environment-variables.md b/docs/deployment-environment-variables.md
index 6cb84d22b..2230c0d4a 100644
--- a/docs/deployment-environment-variables.md
+++ b/docs/deployment-environment-variables.md
@@ -125,11 +125,3 @@ By default, charts & timestamps will be in UTC.
 ```bash
 TIME_ZONE="America/Los_Angeles"
 ```
-
-### Skylight
-
-Skylight provides detailed performance analytics for the app, if you chose to use it.
-
-```bash
-SKYLIGHT_AUTHENTICATION=""
-```
diff --git a/vendor/cache/skylight-4.3.0.gem b/vendor/cache/skylight-4.3.0.gem
deleted file mode 100644
index e58840083..000000000
Binary files a/vendor/cache/skylight-4.3.0.gem and /dev/null differ
diff --git a/vendor/cache/skylight-core-4.3.0.gem b/vendor/cache/skylight-core-4.3.0.gem
deleted file mode 100644
index 2d6980dfa..000000000
Binary files a/vendor/cache/skylight-core-4.3.0.gem and /dev/null differ