diff --git a/.github/workflows/sentry_rails_test.yml b/.github/workflows/sentry_rails_test.yml
index 30d9ea4da..5f9d80c58 100644
--- a/.github/workflows/sentry_rails_test.yml
+++ b/.github/workflows/sentry_rails_test.yml
@@ -51,6 +51,8 @@ jobs:
             rails_version: "8.0.0"
           - ruby_version: "3.4"
             rails_version: "8.0.0"
+          - ruby_version: "3.4"
+            rails_version: "8.1.0"
           - ruby_version: "3.2"
             rails_version: 7.1.0
             options:
diff --git a/sentry-rails/Gemfile b/sentry-rails/Gemfile
index b4059bf4f..d58657d5b 100644
--- a/sentry-rails/Gemfile
+++ b/sentry-rails/Gemfile
@@ -30,16 +30,18 @@ rails_version = Gem::Version.new(rails_version)
 
 gem "rails", "~> #{rails_version}"
 
-if rails_version >= Gem::Version.new("8.0.0")
-  gem "rspec-rails"
+if rails_version >= Gem::Version.new("8.1.0")
+  gem "rspec-rails", "~> 8.0.0"
+  gem "sqlite3", "~> 2.1.1", platform: :ruby
+elsif rails_version >= Gem::Version.new("8.0.0")
+  gem "rspec-rails", "~> 8.0.0"
   gem "sqlite3", "~> 2.1.1", platform: :ruby
 elsif rails_version >= Gem::Version.new("7.1.0")
   gem "psych", "~> 4.0.0"
-  gem "rspec-rails"
+  gem "rspec-rails", "~> 7.0"
   gem "sqlite3", "~> 1.7.3", platform: :ruby
 elsif rails_version >= Gem::Version.new("6.1.0")
-  gem "rspec-rails", "~> 4.0"
-
+  gem "rspec-rails", "~> 6.0"
   gem "sqlite3", "~> 1.7.3", platform: :ruby
 else
   gem "psych", "~> 3.0.0"
diff --git a/sentry-rails/bin/test b/sentry-rails/bin/test
index 0e7cafce2..1eb52afb3 100755
--- a/sentry-rails/bin/test
+++ b/sentry-rails/bin/test
@@ -24,7 +24,7 @@ require 'optparse'
 require 'fileutils'
 
 class RailsVersionTester
-  SUPPORTED_VERSIONS = %w[5.0 5.1 5.2 6.0 6.1 7.0 7.1 7.2 8.0].freeze
+  SUPPORTED_VERSIONS = %w[5.2 6.0 6.1 7.0 7.1 7.2 8.0 8.1].freeze
 
   def initialize
     @options = {}
diff --git a/sentry-rails/spec/dummy/test_rails_app/app.rb b/sentry-rails/spec/dummy/test_rails_app/app.rb
index 2d46ceb11..1522bb73d 100644
--- a/sentry-rails/spec/dummy/test_rails_app/app.rb
+++ b/sentry-rails/spec/dummy/test_rails_app/app.rb
@@ -58,7 +58,6 @@ def self.name
   app.config.active_job.queue_adapter = :test
   app.config.cache_store = :memory_store
   app.config.action_controller.perform_caching = true
-  app.config.filter_parameters += [:password, :secret]
 
   # Eager load namespaces can be accumulated after repeated initializations and make initialization
   # slower after each run
@@ -70,15 +69,15 @@ def self.name
   configure_app(app)
 
   # Configure parameter filtering for consistent test behavior
-  app.config.filter_parameters.concat(
-    [:custom_secret,
-     :api_key,
-     :credit_card,
-     :authorization,
-     :password,
-     :token]
-  )
-  app.config.filter_parameters.uniq!
+  app.config.filter_parameters = [
+    :password,
+    :secret,
+    :custom_secret,
+    :api_key,
+    :credit_card,
+    :authorization,
+    :token
+  ]
 
   app.routes.append do
     get "/exception", to: "hello#exception"
diff --git a/sentry-rails/spec/dummy/test_rails_app/configs/7-1.rb b/sentry-rails/spec/dummy/test_rails_app/configs/7-1.rb
index d0126d985..4a0a79580 100644
--- a/sentry-rails/spec/dummy/test_rails_app/configs/7-1.rb
+++ b/sentry-rails/spec/dummy/test_rails_app/configs/7-1.rb
@@ -30,6 +30,10 @@ def run_pre_initialize_cleanup
   # Rails 7.1 stores the error reporter directly under the ActiveSupport class.
   # So we need to make sure the subscriber is not subscribed unexpectedly before any tests
   ActiveSupport.error_reporter.unsubscribe(Sentry::Rails::ErrorSubscriber)
+
+  if ActiveSupport.respond_to?(:filter_parameters)
+    ActiveSupport.filter_parameters.clear
+  end
 end
 
 def configure_app(app)
diff --git a/sentry-rails/spec/dummy/test_rails_app/configs/7-2.rb b/sentry-rails/spec/dummy/test_rails_app/configs/7-2.rb
index d0126d985..4a0a79580 100644
--- a/sentry-rails/spec/dummy/test_rails_app/configs/7-2.rb
+++ b/sentry-rails/spec/dummy/test_rails_app/configs/7-2.rb
@@ -30,6 +30,10 @@ def run_pre_initialize_cleanup
   # Rails 7.1 stores the error reporter directly under the ActiveSupport class.
   # So we need to make sure the subscriber is not subscribed unexpectedly before any tests
   ActiveSupport.error_reporter.unsubscribe(Sentry::Rails::ErrorSubscriber)
+
+  if ActiveSupport.respond_to?(:filter_parameters)
+    ActiveSupport.filter_parameters.clear
+  end
 end
 
 def configure_app(app)
diff --git a/sentry-rails/spec/spec_helper.rb b/sentry-rails/spec/spec_helper.rb
index 4a8640f5f..85760781a 100644
--- a/sentry-rails/spec/spec_helper.rb
+++ b/sentry-rails/spec/spec_helper.rb
@@ -64,6 +64,8 @@
     end
 
     reset_sentry_globals!
+
+    Rails.application = nil
   end
 
   config.before :each do