diff --git a/Gemfile b/Gemfile
index 4c077e7139791fec5270b4f46437a0bceafb6fcb..1d03c38854985b2d2f17420d139924aa2c10df79 100644
--- a/Gemfile
+++ b/Gemfile
@@ -296,7 +296,7 @@ gem 'rack-attack', '~> 6.2.0'
 # Sentry integration
 gem 'sentry-raven', '~> 2.9'
 
-gem 'premailer-rails', '~> 1.9.7'
+gem 'premailer-rails', '~> 1.10.3'
 
 # LabKit: Tracing and Correlation
 gem 'gitlab-labkit', '~> 0.5'
diff --git a/Gemfile.lock b/Gemfile.lock
index 5031007ef1dbcea6f14ef86523fdd86a8c50cc79..5d9e9b50ca0d06b3584ece556240809575ba3c7f 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -175,7 +175,7 @@ GEM
       safe_yaml (~> 1.0.0)
     crass (1.0.5)
     creole (0.5.0)
-    css_parser (1.5.0)
+    css_parser (1.7.0)
       addressable
     daemons (1.2.6)
     danger (6.0.9)
@@ -584,7 +584,7 @@ GEM
     mime-types-data (3.2019.0331)
     mimemagic (0.3.2)
     mini_magick (4.9.5)
-    mini_mime (1.0.1)
+    mini_mime (1.0.2)
     mini_portile2 (2.4.0)
     minitest (5.11.3)
     msgpack (1.3.1)
@@ -703,12 +703,12 @@ GEM
     pg (1.1.4)
     po_to_json (1.0.1)
       json (>= 1.6.0)
-    premailer (1.10.4)
+    premailer (1.11.1)
       addressable
-      css_parser (>= 1.4.10)
+      css_parser (>= 1.6.0)
       htmlentities (>= 4.0.0)
-    premailer-rails (1.9.7)
-      actionmailer (>= 3, < 6)
+    premailer-rails (1.10.3)
+      actionmailer (>= 3)
       premailer (~> 1.7, >= 1.7.9)
     proc_to_ast (0.1.0)
       coderay
@@ -724,7 +724,7 @@ GEM
       pry (~> 0.10)
     pry-rails (0.3.6)
       pry (>= 0.10.4)
-    public_suffix (3.1.0)
+    public_suffix (3.1.1)
     puma (3.12.0)
     puma_worker_killer (0.1.0)
       get_process_mem (~> 0.2)
@@ -1248,7 +1248,7 @@ DEPENDENCIES
   omniauth_openid_connect (~> 0.3.3)
   org-ruby (~> 0.9.12)
   pg (~> 1.1)
-  premailer-rails (~> 1.9.7)
+  premailer-rails (~> 1.10.3)
   prometheus-client-mmap (~> 0.9.10)
   pry-byebug (~> 3.5.1)
   pry-rails (~> 0.3.4)