diff --git a/Gemfile.lock b/Gemfile.lock
index c5c71caa..2a89cdd8 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -208,7 +208,7 @@ GEM
       path_expander (~> 1.0)
     minitest-server (1.0.5)
       minitest (~> 5.0)
-    mnemosyne-ruby (1.8.0)
+    mnemosyne-ruby (1.9.0)
       activesupport (>= 4)
       bunny
     msgpack (1.3.1)