diff --git a/Gemfile b/Gemfile
index 680c25ae..163da93b 100644
--- a/Gemfile
+++ b/Gemfile
@@ -15,6 +15,7 @@ gem "jwt"
 gem "mongo", "~> 2.20.1"
 gem "mongoid"
 gem "nokogiri"
+gem "observer"
 gem "plek"
 gem "rack_strip_client_ip"
 gem "rails-controller-testing"
diff --git a/Gemfile.lock b/Gemfile.lock
index 10139f33..464d9279 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -284,6 +284,7 @@ GEM
       rack (>= 1.2, < 4)
       snaky_hash (~> 2.0)
       version_gem (~> 1.1)
+    observer (0.1.2)
     omniauth (2.1.2)
       hashie (>= 3.4.6)
       rack (>= 2.2.3)
@@ -759,6 +760,7 @@ DEPENDENCIES
   mongo (~> 2.20.1)
   mongoid
   nokogiri
+  observer
   pact
   pact_broker-client
   plek