diff --git a/test/ruby/Gemfile.lock b/test/ruby/Gemfile.lock
index 4f2a32fa..038a27b1 100644
--- a/test/ruby/Gemfile.lock
+++ b/test/ruby/Gemfile.lock
@@ -15,7 +15,7 @@ GEM
     matrix (0.4.2)
     mustermann (2.0.2)
       ruby2_keywords (~> 0.0.1)
-    rack (2.2.8.1)
+    rack (2.2.14)
     rack-protection (2.2.3)
       rack
     ruby2_keywords (0.0.5)