diff --git a/Gemfile b/Gemfile
index 5eb0d54130e79223f6fa5b39406408fba61c4fc2..a75a9ef7ed59c94e4d5107caa4d71bc77f429d9b 100644
--- a/Gemfile
+++ b/Gemfile
@@ -162,7 +162,7 @@ gem "openid_connect", "1.1.2"
 
 # Serializers
 
-gem "active_model_serializers", "0.9.5"
+gem "active_model_serializers", "0.9.7"
 
 # XMPP chat dependencies
 gem "diaspora-prosody-config",    "0.0.7"
diff --git a/Gemfile.lock b/Gemfile.lock
index 9ec61ad2630511235e52d1ccfeb24ba23e07cf40..1c51fc88458d961815bb6b8360c6084630e46859 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -21,8 +21,9 @@ GEM
       erubis (~> 2.7.0)
       rails-dom-testing (~> 1.0, >= 1.0.5)
       rails-html-sanitizer (~> 1.0, >= 1.0.3)
-    active_model_serializers (0.9.5)
+    active_model_serializers (0.9.7)
       activemodel (>= 3.2)
+      concurrent-ruby (~> 1.0)
     activejob (4.2.9)
       activesupport (= 4.2.9)
       globalid (>= 0.3.0)
@@ -755,7 +756,7 @@ PLATFORMS
   ruby
 
 DEPENDENCIES
-  active_model_serializers (= 0.9.5)
+  active_model_serializers (= 0.9.7)
   activerecord-import (= 0.19.1)
   acts-as-taggable-on (= 3.5.0)
   acts_as_api (= 1.0.0)