diff --git a/Gemfile b/Gemfile
index 21ce40e..926f529 100644
--- a/Gemfile
+++ b/Gemfile
@@ -9,4 +9,4 @@ gem "webrick", "~> 1.9"
 
 gem "pathutil", "~> 0.16.2"
 
-gem "json", "~> 2.8"
+gem "json", "~> 2.9"
diff --git a/Gemfile.lock b/Gemfile.lock
index eab326a..4091755 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -65,7 +65,7 @@ GEM
       sass-embedded (~> 1.54)
     jekyll-watch (2.2.1)
       listen (~> 3.0)
-    json (2.8.2)
+    json (2.9.0)
     kramdown (2.4.0)
       rexml
     kramdown-parser-gfm (1.1.0)
@@ -142,7 +142,7 @@ PLATFORMS
 DEPENDENCIES
   jekyll (>= 3.6.3)
   jekyll-feed
-  json (~> 2.8)
+  json (~> 2.9)
   neat (>= 1.0.0)
   pathutil (~> 0.16.2)
   webrick (~> 1.9)