diff --git a/Gemfile.lock b/Gemfile.lock
index 670bb17..1e13314 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -88,7 +88,7 @@ GEM
     erubi (1.12.0)
     ethon (0.16.0)
       ffi (>= 1.15.0)
-    execjs (2.8.1)
+    execjs (2.9.0)
     faraday (2.7.10)
       faraday-net_http (>= 2.0, < 3.1)
       ruby2_keywords (>= 0.0.4)