diff --git a/Gemfile.lock b/Gemfile.lock
index 69606d9..61c3ebc 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -25,7 +25,7 @@ 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)