diff --git a/DataProcessing/guide/Gemfile.lock b/DataProcessing/guide/Gemfile.lock
index b06ec9c..53f78f4 100644
--- a/DataProcessing/guide/Gemfile.lock
+++ b/DataProcessing/guide/Gemfile.lock
@@ -1,7 +1,7 @@
 GEM
   remote: https://rubygems.org/
   specs:
-    ffi (1.9.18)
+    ffi (1.11.1)
     gemoji (3.0.0)
     gemoji-parser (1.3.1)
       gemoji (>= 2.1.0)