diff --git a/config/templates/omnibus-gitlab-gems/Gemfile.lock b/config/templates/omnibus-gitlab-gems/Gemfile.lock
index 6d81b1279d..500df11f00 100644
--- a/config/templates/omnibus-gitlab-gems/Gemfile.lock
+++ b/config/templates/omnibus-gitlab-gems/Gemfile.lock
@@ -277,7 +277,8 @@ GEM
       http-cookie (>= 1.0.2, < 2.0)
       mime-types (>= 1.16, < 4.0)
       netrc (~> 0.8)
-    rexml (3.2.6)
+    rexml (3.3.3)
+      strscan
     rspec (3.12.0)
       rspec-core (~> 3.12.0)
       rspec-expectations (~> 3.12.0)
@@ -310,6 +311,7 @@ GEM
       unicode-display_width (>= 1.5, < 3.0)
       unicode_utils (~> 1.4)
     strings-ansi (0.2.0)
+    strscan (3.1.0)
     sync (0.5.0)
     syslog-logger (1.6.8)
     syslog_protocol (0.9.2)