diff --git a/Gemfile.lock b/Gemfile.lock
index 1fa5916f3..89552c580 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -295,7 +295,7 @@ GEM
     minitest (5.25.1)
     mocha (2.4.5)
       ruby2_keywords (>= 0.0.5)
-    msgpack (1.7.2)
+    msgpack (1.7.3)
     multi_json (1.15.0)
     mysql2 (0.5.6)
     net-imap (0.4.16)