diff --git a/contrib/ruby/Gemfile.lock b/contrib/ruby/Gemfile.lock
index bfe51a89..8104c4d9 100644
--- a/contrib/ruby/Gemfile.lock
+++ b/contrib/ruby/Gemfile.lock
@@ -8,7 +8,7 @@ GEM
   specs:
     benchmark-ips (2.7.2)
     minitest (5.11.3)
-    mysql2 (0.5.5)
+    mysql2 (0.5.6)
     rake (13.0.1)
     rake-compiler (1.0.7)
       rake