diff --git a/Gemfile.lock b/Gemfile.lock
index c717d769..a67546f3 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -149,7 +149,7 @@ GEM
     matrix (0.4.2)
     method_source (1.0.0)
     mini_mime (1.1.2)
-    mini_portile2 (2.8.2)
+    mini_portile2 (2.8.4)
     minitest (5.18.1)
     minitest-ci (3.4.0)
       minitest (>= 5.0.6)