diff --git a/Gemfile b/Gemfile
index 814146a..0388af9 100644
--- a/Gemfile
+++ b/Gemfile
@@ -9,4 +9,4 @@ gem "webrick", "~> 1.9"
 
 gem "pathutil", "~> 0.16.2"
 
-gem "json", "~> 2.12"
+gem "json", "~> 2.13"
diff --git a/Gemfile.lock b/Gemfile.lock
index 9b1cc61..31ce961 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -70,7 +70,7 @@ GEM
       sass-embedded (~> 1.54)
     jekyll-watch (2.2.1)
       listen (~> 3.0)
-    json (2.12.2)
+    json (2.13.0)
     kramdown (2.5.1)
       rexml (>= 3.3.9)
     kramdown-parser-gfm (1.1.0)
@@ -144,7 +144,7 @@ PLATFORMS
 DEPENDENCIES
   jekyll (>= 3.6.3)
   jekyll-feed
-  json (~> 2.12)
+  json (~> 2.13)
   neat (>= 1.0.0)
   pathutil (~> 0.16.2)
   webrick (~> 1.9)