diff --git a/rails/rubocop-for-gem.yml b/rails/rubocop-for-gem.yml
index a8543d15b130595de56bc01dd31b8b684b69350a..db625b3a24d2716d36ed18030d86f6949cd8c24e 100644
--- a/rails/rubocop-for-gem.yml
+++ b/rails/rubocop-for-gem.yml
@@ -82,6 +82,17 @@ Metrics/PerceivedComplexity:
 # END Metrics
 
 
+# BEGIN Minitest
+# seems kind of buggy, when a custom message is given, this is flagged
+Minitest/AssertWithExpectedArgument:
+  Enabled: false
+
+# allow more assertions than default, but also not too many
+Minitest/MultipleAssertions:
+  Max: 8 # default: 3
+# END Minitest
+
+
 # BEGIN Naming
 # the default gem module must be named like the gem, so allow dashes
 Naming/FileName:
@@ -89,6 +100,37 @@ Naming/FileName:
 # END Naming
 
 
+# BEGIN Rails
+# file paths should be built with arguments instead of a single string
+Rails/ApplicationController:
+  Exclude: ['app/controllers/api/**/*', 'app/controllers/a_p_i/**/*'] # exclude API namespace, but not others (convention)
+
+# exclude migrations since non-ApplicationRecord behavior might be desired
+Rails/ApplicationRecord:
+  Exclude: ['db/migrate/*']
+
+# ensure paths are built using a filesystem agnostic way, i.e. arguments instead of a single string
+Rails/FilePath:
+  EnforcedStyle: arguments # default: slashes
+
+# no reason not to use an established Rails feature if developers see fit
+Rails/HasAndBelongsToMany:
+  Enabled: false
+
+# prevent puts, but exclude test, config, db since Rails Logger may not have been loaded
+Rails/Output:
+  Exclude: ['test/**/*', 'config/**/*', 'db/**/*']
+
+# allow usage of methods that skip validations; we trust developers know what they are doing
+Rails/SkipsModelValidations:
+  Enabled: false
+
+# allow usage of three-state boolean columns, it may be an STI table
+Rails/ThreeStateBooleanColumn:
+  Enabled: false
+# END Rails
+
+
 # BEGIN Style
 # allow compact style for gems that contain app directory for rails integration
 Style/ClassAndModuleChildren: