diff --git a/testfiles/testtheme/Gemfile.lock b/testfiles/testtheme/Gemfile.lock
index c9f7262..b9cd8d5 100644
--- a/testfiles/testtheme/Gemfile.lock
+++ b/testfiles/testtheme/Gemfile.lock
@@ -27,7 +27,7 @@ GEM
     compass-validator (3.0.1)
     css_parser (1.4.7)
       addressable
-    ffi (1.9.17)
+    ffi (1.9.24)
     multi_json (1.12.1)
     oily_png (1.2.1)
       chunky_png (~> 1.3.7)