diff --git a/Gemfile.lock b/Gemfile.lock
index 54794ea762..dc863cd97f 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -106,7 +106,7 @@ GEM
       rest-client (~> 2.0)
     globalid (0.4.2)
       activesupport (>= 4.2.0)
-    govuk_app_config (2.6.0)
+    govuk_app_config (2.7.0)
       logstasher (>= 1.2.2, < 1.4.0)
       sentry-raven (~> 3.1.1)
       statsd-ruby (~> 1.4.0)
@@ -292,7 +292,7 @@ GEM
     thor (1.0.1)
     thread_safe (0.3.6)
     tilt (2.0.10)
-    tzinfo (1.2.7)
+    tzinfo (1.2.8)
       thread_safe (~> 0.1)
     uglifier (4.2.0)
       execjs (>= 0.3.0, < 3)
@@ -317,7 +317,7 @@ GEM
     xpath (3.2.0)
       nokogiri (~> 1.8)
     yard (0.9.25)
-    zeitwerk (2.4.0)
+    zeitwerk (2.4.1)
 
 PLATFORMS
   ruby