diff --git a/Gemfile.lock b/Gemfile.lock
index 20e8662..527d8b8 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -83,8 +83,6 @@ GEM
     concurrent-ruby (1.1.6)
     connection_pool (2.2.3)
     crass (1.0.6)
-    css_parser (1.7.1)
-      addressable
     database_cleaner (1.8.5)
     database_cleaner-active_record (1.8.0)
       activerecord
@@ -116,7 +114,6 @@ GEM
     flutie (2.2.0)
     globalid (0.4.2)
       activesupport (>= 4.2.0)
-    htmlentities (4.3.4)
     i18n (1.8.3)
       concurrent-ruby (~> 1.0)
     jbuilder (2.10.0)
@@ -181,13 +178,6 @@ GEM
     postmark-rails (0.20.0)
       actionmailer (>= 3.0.0)
       postmark (~> 1.15)
-    premailer (1.11.1)
-      addressable
-      css_parser (>= 1.6.0)
-      htmlentities (>= 4.0.0)
-    premailer-rails (1.11.1)
-      actionmailer (>= 3)
-      premailer (~> 1.7, >= 1.7.9)
     pry (0.12.2)
       coderay (~> 1.1.0)
       method_source (~> 0.9.0)
@@ -317,7 +307,7 @@ GEM
     turbolinks_render (0.9.20)
       rails (>= 5.2.0)
       turbolinks-source (~> 5.1)
-    tzinfo (1.2.7)
+    tzinfo (1.2.10)
       thread_safe (~> 0.1)
     tzinfo-data (1.2020.1)
       tzinfo (>= 1.0.0)
@@ -378,7 +368,6 @@ DEPENDENCIES
   pg
   pg_search (~> 2.3.0)
   postmark-rails
-  premailer-rails
   pry (~> 0.12.2)
   puma (~> 3.12)
   rails (~> 5.2.4)