diff --git a/Gemfile.lock b/Gemfile.lock
index c87f1f317..4321c8d98 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -123,7 +123,7 @@ GEM
       rest-client (~> 2.0)
     globalid (1.1.0)
       activesupport (>= 5.0)
-    govuk_ab_testing (2.4.2)
+    govuk_ab_testing (2.4.3)
     govuk_app_config (5.1.0)
       logstasher (~> 2.1)
       plek (>= 4, < 6)