diff --git a/.circleci/config.yml b/.circleci/config.yml
index e98b8f3..e1ecd65 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -62,10 +62,6 @@ workflows:
           name: bundle_ruby2-6_rails5-2
           ruby_version: 2.6.3
           rails_version: 5.2.3
-      - bundle_lint_test:
-          name: bundle_ruby2-6_rails5-1
-          ruby_version: 2.6.3
-          rails_version: 5.1.7
       - bundle_lint_test:
           name: bundle_ruby2-5_rails6-0
           ruby_version: 2.5.5
@@ -74,15 +70,3 @@ workflows:
           name: bundle_ruby2-5_rails5-2
           ruby_version: 2.5.5
           rails_version: 5.2.3
-      - bundle_lint_test:
-          name: bundle_ruby2-5_rails5-1
-          ruby_version: 2.5.5
-          rails_version: 5.1.7
-      - bundle_lint_test:
-          name: bundle_ruby2-4_rails5-2
-          ruby_version: 2.4.6
-          rails_version: 5.2.3
-      - bundle_lint_test:
-          name: bundle_ruby2-4_rails5-1
-          ruby_version: 2.4.6
-          rails_version: 5.1.7
diff --git a/Gemfile b/Gemfile
index 32b7d35..078a724 100644
--- a/Gemfile
+++ b/Gemfile
@@ -1,5 +1,7 @@
 source "https://rubygems.org"
 
+gem 'hydra-head', git: 'https://github.com/samvera/hydra-head'
+
 # Declare your gem's dependencies in hydra-editor.gemspec.
 # Bundler will treat runtime dependencies like base dependencies, and
 # development dependencies will be added by default to the :development group.
diff --git a/hydra-editor.gemspec b/hydra-editor.gemspec
index 8a99509..e94a3c4 100644
--- a/hydra-editor.gemspec
+++ b/hydra-editor.gemspec
@@ -15,13 +15,13 @@ Gem::Specification.new do |s|
 
   s.files = Dir["{app,config,db,lib}/**/*"] + ["Rakefile", "README.md", "History.md"]
 
-  s.add_dependency "activerecord", "~> 5.0"
+  s.add_dependency "activerecord", ">= 5.2", "< 7"
   s.add_dependency "active-fedora", ">= 9.0.0"
   s.add_dependency "almond-rails", '~> 0.1'
   s.add_dependency "cancancan", "~> 1.8"
-  s.add_dependency "rails", ">= 5", "< 6"
+  s.add_dependency "rails", ">= 5.2", "< 7"
   s.add_dependency "simple_form", '>= 4.1.0', '< 6.0'
-  s.add_dependency 'sprockets', '~> 3.7'
+  s.add_dependency 'sprockets', '>= 3.7'
   s.add_dependency 'sprockets-es6'
 
   s.add_development_dependency "bixby", '~> 3.0'
@@ -30,7 +30,7 @@ Gem::Specification.new do |s|
   s.add_development_dependency "engine_cart", '~> 2.2'
   s.add_development_dependency 'factory_bot_rails', '~> 4.8'
   s.add_development_dependency 'fcrepo_wrapper', '~> 0.5'
-  s.add_development_dependency "hydra-head", '~> 10.5'
+  s.add_development_dependency "hydra-head", '>= 10.5'
   s.add_development_dependency "jasmine", '~> 2.3'
   s.add_development_dependency "pry-byebug"
   s.add_development_dependency 'rails-controller-testing'