diff --git a/QuickLook.Plugin/QuickLook.Plugin.TextViewer/Syntax/Dark/JSON.xshd b/QuickLook.Plugin/QuickLook.Plugin.TextViewer/Syntax/Dark/JSON.xshd
index 386a845..f165518 100644
--- a/QuickLook.Plugin/QuickLook.Plugin.TextViewer/Syntax/Dark/JSON.xshd
+++ b/QuickLook.Plugin/QuickLook.Plugin.TextViewer/Syntax/Dark/JSON.xshd
@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="utf-8" ?>
 
-<SyntaxDefinition name="Json" extensions=".json" xmlns="http://icsharpcode.net/sharpdevelop/syntaxdefinition/2008">
+<SyntaxDefinition name="Json" extensions=".json;.jsonc" xmlns="http://icsharpcode.net/sharpdevelop/syntaxdefinition/2008">
     <Color name="Bool" foreground="#569CD6" exampleText="true | false" />
     <Color name="Number" foreground="#B5CEA8" exampleText="3.14" />
     <Color name="String" foreground="#CE9178" exampleText="" />
diff --git a/QuickLook.Plugin/QuickLook.Plugin.TextViewer/Syntax/Light/JSON.xshd b/QuickLook.Plugin/QuickLook.Plugin.TextViewer/Syntax/Light/JSON.xshd
index 184cf71..ea26df8 100644
--- a/QuickLook.Plugin/QuickLook.Plugin.TextViewer/Syntax/Light/JSON.xshd
+++ b/QuickLook.Plugin/QuickLook.Plugin.TextViewer/Syntax/Light/JSON.xshd
@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="utf-8"?>
 
-<SyntaxDefinition name="JSON" extensions=".json">
+<SyntaxDefinition name="JSON" extensions=".json;.jsonc">
     
     <Environment> 
         <Default color="Black" bgcolor="#FFFFFF"/>