diff --git a/Gemfile.lock b/Gemfile.lock
index b54816454..b5ca8d046 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -174,7 +174,7 @@ GEM
     googleapis-common-protos-types (1.15.0)
       google-protobuf (>= 3.18, < 5.a)
     govuk_ab_testing (2.4.3)
-    govuk_app_config (9.12.0)
+    govuk_app_config (9.13.0)
       logstasher (~> 2.1)
       opentelemetry-exporter-otlp (>= 0.25, < 0.29)
       opentelemetry-instrumentation-all (>= 0.39.1, < 0.62.0)
@@ -486,7 +486,7 @@ GEM
     puma (6.4.2)
       nio4r (~> 2.0)
     racc (1.8.0)
-    rack (3.1.4)
+    rack (3.1.6)
     rack-proxy (0.7.7)
       rack
     rack-session (2.0.0)