diff --git a/Gemfile.lock b/Gemfile.lock
index 6fb5572..6ba95a8 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -20,7 +20,7 @@ GEM
     faraday_middleware (0.10.0)
       faraday (>= 0.7.4, < 0.10)
     fast-stemmer (1.0.2)
-    ffi (1.9.10)
+    ffi (1.13.1)
     gh (0.14.0)
       addressable
       backports