diff --git a/Gemfile.lock b/Gemfile.lock
index fde09d3..28f2782 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -24,13 +24,13 @@ GEM
     ethon (0.16.0)
       ffi (>= 1.15.0)
     eventmachine (1.2.7)
-    execjs (2.9.0)
+    execjs (2.9.1)
     faraday (2.7.11)
       base64
       faraday-net_http (>= 2.0, < 3.1)
       ruby2_keywords (>= 0.0.4)
     faraday-net_http (3.0.2)
-    ffi (1.15.5)
+    ffi (1.16.0)
     forwardable-extended (2.6.0)
     gemoji (3.0.1)
     github-pages (228)