diff --git a/cookbooks/sysctl/Gemfile.lock b/cookbooks/sysctl/Gemfile.lock
index df87735..28c2b2f 100644
--- a/cookbooks/sysctl/Gemfile.lock
+++ b/cookbooks/sysctl/Gemfile.lock
@@ -73,7 +73,7 @@ GEM
     fauxhai (2.1.2)
       net-ssh
       ohai
-    ffi (1.9.3)
+    ffi (1.15.5)
     foodcritic (3.0.3)
       erubis
       gherkin (~> 2.11.7)