diff --git a/Gemfile b/Gemfile
index 3013be52..61fe8552 100644
--- a/Gemfile
+++ b/Gemfile
@@ -85,4 +85,4 @@ group :test do
   gem "selenium-webdriver"
   gem "minitest-stub_any_instance"
   gem "rails-controller-testing"
-end
+end
\ No newline at end of file
diff --git a/Gemfile.lock b/Gemfile.lock
index 5e67b9ff..e4a124b0 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -490,4 +490,4 @@ RUBY VERSION
    ruby 3.3.5p100
 
 BUNDLED WITH
-   2.5.1
+   2.5.1
\ No newline at end of file
diff --git a/test/fixtures/language_models.yml b/test/fixtures/language_models.yml
index 339f3b88..7ebfa15f 100644
--- a/test/fixtures/language_models.yml
+++ b/test/fixtures/language_models.yml
@@ -140,6 +140,7 @@ gpt_best:
   api_service: keith_openai_service
   supports_images: true
   supports_tools: true
+  supports_system_message: true
   input_token_cost_cents: 0.0001
   output_token_cost_cents: 0.0001