diff --git a/Gemfile.lock b/Gemfile.lock
index 328fbe42b..3fcbfe3ca 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -258,7 +258,7 @@ GEM
     govuk_notify_rails (2.2.0)
       notifications-ruby-client (~> 5.1)
       rails (>= 4.1.0)
-    grover (1.1.7)
+    grover (1.1.9)
       combine_pdf (~> 1.0)
       nokogiri (~> 1.0)
     hashie (5.0.0)