diff --git a/Gemfile.lock b/Gemfile.lock
index 2d1ad82f5..ad800c676 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -146,7 +146,7 @@ GEM
       rinku (~> 2.0)
       sanitize (~> 6)
     govuk_ab_testing (3.0.0)
-    govuk_app_config (9.15.0)
+    govuk_app_config (9.15.1)
       logstasher (~> 2.1)
       opentelemetry-exporter-otlp (>= 0.25, < 0.30)
       opentelemetry-instrumentation-all (>= 0.39.1, < 0.69.0)