diff --git a/Gemfile.lock b/Gemfile.lock
index e1288ef..1b4089e 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -162,7 +162,7 @@ GEM
       rake (>= 13)
     googleapis-common-protos-types (1.16.0)
       google-protobuf (>= 3.18, < 5.a)
-    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)
@@ -649,7 +649,7 @@ GEM
     simplecov-html (0.12.3)
     simplecov_json_formatter (0.1.4)
     statsd-ruby (1.5.0)
-    stringio (3.1.1)
+    stringio (3.1.2)
     sync (0.5.0)
     table_print (1.5.7)
     term-ansicolor (1.11.2)