diff --git a/.rubocop_rspec.yml b/.rubocop_rspec.yml
index a950e59e..3025e4a0 100644
--- a/.rubocop_rspec.yml
+++ b/.rubocop_rspec.yml
@@ -31,6 +31,9 @@ RSpec/NestedGroups:
 RSpec/ExpectInHook:
   Enabled: false
 
+RSpec/ExpectInLet:
+  Enabled: false
+
 # NOTE: for many tests of equality `eql` works, while `be` does not, because
 #        expected #<Fixnum:...> => 101
 #            got #<BigDecimal:...> => 101.0 (0.101e3)
diff --git a/dynamoid.gemspec b/dynamoid.gemspec
index 198a8dfb..fa18da88 100644
--- a/dynamoid.gemspec
+++ b/dynamoid.gemspec
@@ -51,9 +51,9 @@ Gem::Specification.new do |spec|
   spec.metadata['wiki_uri'] = 'https://github.com/Dynamoid/dynamoid/wiki'
   spec.metadata['rubygems_mfa_required'] = 'true'
 
-  spec.add_runtime_dependency 'activemodel', '>=4'
-  spec.add_runtime_dependency 'aws-sdk-dynamodb', '~> 1.0'
-  spec.add_runtime_dependency 'concurrent-ruby', '>= 1.0'
+  spec.add_dependency 'activemodel', '>=4'
+  spec.add_dependency 'aws-sdk-dynamodb', '~> 1.0'
+  spec.add_dependency 'concurrent-ruby', '>= 1.0'
 
   spec.add_development_dependency 'appraisal'
   spec.add_development_dependency 'bundler'
diff --git a/spec/dynamoid/criteria_new_spec.rb b/spec/dynamoid/criteria_new_spec.rb
index 7a68dbb6..f99960cf 100644
--- a/spec/dynamoid/criteria_new_spec.rb
+++ b/spec/dynamoid/criteria_new_spec.rb
@@ -43,10 +43,10 @@
     klass = new_class do
       range :name
     end
+    objects = klass.create([{ name: 'Alex' }, { name: 'Bob' }])
 
     result = []
-    objects = klass.create([{ name: 'Alex' }, { name: 'Bob' }])
-    klass.each { |obj| result << obj }
+    klass.each { |obj| result << obj } # rubocop:disable Style/MapIntoArray
 
     expect(result).to match_array(objects)
   end