diff --git a/Gemfile.lock b/Gemfile.lock
index 6301b070f..4e09dee4a 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -61,6 +61,7 @@ GEM
       rack (>= 0.9.0)
     binding_of_caller (0.8.0)
       debug_inspector (>= 0.0.1)
+    brakeman (4.7.0)
     builder (3.2.3)
     capybara (3.29.0)
       addressable
@@ -125,7 +126,8 @@ GEM
       sprockets (< 4)
     govuk_schemas (4.0.0)
       json-schema (~> 2.8.0)
-    govuk_test (1.0.2)
+    govuk_test (1.0.3)
+      brakeman (~> 4.6)
       capybara
       puma
       selenium-webdriver (>= 3.142)