diff --git a/ui/Gemfile b/ui/Gemfile
index 77b884c352..ce0147581d 100644
--- a/ui/Gemfile
+++ b/ui/Gemfile
@@ -1,6 +1,7 @@
 # A sample Gemfile
 source "https://rubygems.org"
 
+gem "ffi", "~> 1.9.24"
 gem "uglifier"
 gem "sass"
 gem "therubyracer"
diff --git a/ui/Gemfile.lock b/ui/Gemfile.lock
index 3221f95639..42d5a015a3 100644
--- a/ui/Gemfile.lock
+++ b/ui/Gemfile.lock
@@ -2,7 +2,7 @@ GEM
   remote: https://rubygems.org/
   specs:
     execjs (2.7.0)
-    ffi (1.9.23)
+    ffi (1.9.25)
     libv8 (3.16.14.19)
     rb-fsevent (0.10.3)
     rb-inotify (0.9.10)
@@ -23,9 +23,10 @@ PLATFORMS
   ruby
 
 DEPENDENCIES
+  ffi (~> 1.9.24)
   sass
   therubyracer
   uglifier
 
 BUNDLED WITH
-   1.16.0
+   1.16.1