diff --git a/Gemfile.lock b/Gemfile.lock
index cd0e18d..d2446fe 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -20,7 +20,7 @@ GEM
       ffi (~> 1.0, >= 1.0.11)
     erubis (2.7.0)
     excon (0.25.3)
-    ffi (1.9.0)
+    ffi (1.15.4)
     fog (1.10.1)
       builder
       excon (~> 0.20)