diff --git a/Neon Vision Editor.xcodeproj/project.pbxproj b/Neon Vision Editor.xcodeproj/project.pbxproj
index 39339b2..882c7d4 100644
--- a/Neon Vision Editor.xcodeproj/project.pbxproj	
+++ b/Neon Vision Editor.xcodeproj/project.pbxproj	
@@ -361,7 +361,7 @@
 				CODE_SIGNING_ALLOWED = YES;
 				CODE_SIGN_IDENTITY = "Apple Development";
 				CODE_SIGN_STYLE = Automatic;
-				CURRENT_PROJECT_VERSION = 537;
+				CURRENT_PROJECT_VERSION = 538;
 				DEAD_CODE_STRIPPING = YES;
 				DEVELOPMENT_TEAM = CS727NF72U;
 				ENABLE_APP_SANDBOX = YES;
@@ -444,7 +444,7 @@
 				CODE_SIGNING_ALLOWED = YES;
 				CODE_SIGN_IDENTITY = "Apple Development";
 				CODE_SIGN_STYLE = Automatic;
-				CURRENT_PROJECT_VERSION = 537;
+				CURRENT_PROJECT_VERSION = 538;
 				DEAD_CODE_STRIPPING = YES;
 				DEVELOPMENT_TEAM = CS727NF72U;
 				ENABLE_APP_SANDBOX = YES;
diff --git a/index.html b/index.html
index edcbe41..4961df5 100644
--- a/index.html
+++ b/index.html
@@ -286,8 +286,8 @@
     }
 
     const renderer = new marked.Renderer();
-    renderer.heading = ({ tokens, depth }) => {
-      const text = marked.parserInline(tokens);
+    renderer.heading = function ({ tokens, depth }) {
+      const text = this.parser.parseInline(tokens);
       const id = slugify(text);
       return `<h${depth} id="${id}">${text}</h${depth}>`;
     };