diff --git a/Gemfile.lock b/Gemfile.lock
index c003d650c..801be8ee5 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -163,7 +163,7 @@ GEM
     crack (0.4.3)
       safe_yaml (~> 1.0.0)
     crass (1.0.4)
-    css_parser (1.6.0)
+    css_parser (1.7.0)
       addressable
     debug_inspector (0.0.3)
     derailed_benchmarks (1.3.6)
@@ -415,8 +415,8 @@ GEM
       addressable
       css_parser (>= 1.6.0)
       htmlentities (>= 4.0.0)
-    premailer-rails (1.10.2)
-      actionmailer (>= 3, < 6)
+    premailer-rails (1.10.3)
+      actionmailer (>= 3)
       premailer (~> 1.7, >= 1.7.9)
     private_address_check (0.5.0)
     pry (0.12.2)