diff --git a/Gemfile.lock b/Gemfile.lock
index 78ef2ae..b40d3fa 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -35,8 +35,8 @@ GEM
       mime-types (>= 1.16)
     coderay (1.1.1)
     diff-lcs (1.2.5)
-    ffi (1.9.18)
-    ffi (1.9.18-java)
+    ffi (1.11.1)
+    ffi (1.11.1-java)
     i18n (0.7.0)
     jdbc-postgres (9.4.1206)
     method_source (0.8.2)