diff --git a/Gemfile.lock b/Gemfile.lock
index 0b70487ea..29cc271c4 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -104,7 +104,7 @@ GEM
       activesupport (>= 4.2.0)
     govuk-content-schema-test-helpers (1.6.1)
       json-schema (~> 2.8.0)
-    govuk_app_config (2.5.0)
+    govuk_app_config (2.5.1)
       logstasher (>= 1.2.2, < 1.4.0)
       sentry-raven (~> 3.1.1)
       statsd-ruby (~> 1.4.0)