diff --git a/Gemfile b/Gemfile
index 5c270e1..5fffd0b 100644
--- a/Gemfile
+++ b/Gemfile
@@ -3,9 +3,9 @@ source "https://rubygems.org"
 # Specify your gem's dependencies in scenic.gemspec
 gemspec
 
-rails_version = ENV.fetch("RAILS_VERSION", "6.1")
+rails_version = ENV.fetch("RAILS_VERSION", "7.0")
 
-rails_constraint = if rails_version == "master"
+rails_constraint = if rails_version == "main"
   {github: "rails/rails"}
 else
   "~> #{rails_version}.0"
diff --git a/scenic.gemspec b/scenic.gemspec
index edafe04..9dff25f 100644
--- a/scenic.gemspec
+++ b/scenic.gemspec
@@ -22,7 +22,7 @@ Gem::Specification.new do |spec|
   spec.add_development_dependency "database_cleaner"
   spec.add_development_dependency "rake"
   spec.add_development_dependency "rspec", ">= 3.3"
-  spec.add_development_dependency "pg", "~> 0.19"
+  spec.add_development_dependency "pg"
   spec.add_development_dependency "pry"
   spec.add_development_dependency "ammeter", ">= 1.1.3"
   spec.add_development_dependency "yard"