diff --git a/docs/Gemfile.lock b/docs/Gemfile.lock
index ba7ce47a2c2c0..cd3eab7a9c04b 100644
--- a/docs/Gemfile.lock
+++ b/docs/Gemfile.lock
@@ -22,8 +22,8 @@ GEM
     em-websocket (0.5.2)
       eventmachine (>= 0.12.9)
       http_parser.rb (~> 0.6.0)
-    ethon (0.12.0)
-      ffi (>= 1.3.0)
+    ethon (0.13.0)
+      ffi (>= 1.15.0)
     eventmachine (1.2.7)
     execjs (2.7.0)
     faraday (1.3.0)