diff --git a/Gemfile.lock b/Gemfile.lock
index 1e778c48d..9c9fb63cb 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -57,6 +57,7 @@ GEM
       rack (>= 0.9.0)
     binding_of_caller (0.8.0)
       debug_inspector (>= 0.0.1)
+    brakeman (4.6.1)
     builder (3.2.3)
     capybara (3.29.0)
       addressable
@@ -117,7 +118,8 @@ GEM
       sassc-rails (>= 2.0.1)
     govuk_template (0.26.0)
       rails (>= 3.1)
-    govuk_test (1.0.2)
+    govuk_test (1.0.3)
+      brakeman (~> 4.6)
       capybara
       puma
       selenium-webdriver (>= 3.142)