diff --git a/Gemfile.lock b/Gemfile.lock
index d04e35e..a758dba 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -269,7 +269,7 @@ GEM
     rb-inotify (0.10.0)
       ffi (~> 1.0)
     regexp_parser (1.6.0)
-    rmagick (4.0.0)
+    rmagick (4.2.2)
     ruby-vips (2.0.14)
       ffi (~> 1.9)
     ruby_dep (1.5.0)