diff --git a/Gemfile.lock b/Gemfile.lock
index 609d240..1190bff 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -227,8 +227,8 @@ GEM
     raindrops (0.18.0)
     rake (12.0.0)
     rb-fsevent (0.9.8)
-    rb-inotify (0.9.8)
-      ffi (>= 0.5.0)
+    rb-inotify (0.9.9)
+      ffi (~> 1.0)
     ref (2.0.0)
     responders (2.4.0)
       actionpack (>= 4.2.0, < 5.3)