diff --git a/Gemfile.lock b/Gemfile.lock
index 2c96ce5102..040f16c656 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -34,7 +34,7 @@ GEM
       public_suffix (>= 2.0.2, < 7.0)
     afm (0.2.2)
     ansi (1.5.0)
-    async (2.19.0)
+    async (2.20.0)
       console (~> 1.29)
       fiber-annotation
       io-event (~> 1.6, >= 1.6.5)
@@ -127,7 +127,7 @@ GEM
     i18n (1.6.0)
       concurrent-ruby (~> 1.0)
     io-event (1.7.3)
-    json (2.8.1)
+    json (2.8.2)
     kramdown (2.4.0)
       rexml
     listen (3.9.0)