diff --git a/Gemfile.lock b/Gemfile.lock
index fea0aab..a120d3d 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -60,7 +60,7 @@ GEM
       rack-test (>= 0.5.4)
       xpath (~> 2.0)
     childprocess (0.8.0)
-      ffi (~> 1.0, >= 1.0.11)
+      ffi (~> 1.0, >= 1.9.24)
     coderay (1.1.2)
     coffee-rails (4.2.2)
       coffee-script (>= 2.2.0)