diff --git a/README.md b/README.md
index 9a9f0d5..823d523 100644
--- a/README.md
+++ b/README.md
@@ -12,12 +12,12 @@ PHP Curl Class makes it easy to send HTTP requests and integrate with web APIs.
 
 ---
 
-- [⚙️ Installation](#-installation)
+- [⚙️ Installation](#%EF%B8%8F-installation)
 - [📋 Requirements](#-requirements)
 - [🚀 Quick Start and Examples](#-quick-start-and-examples)
 - [📖 Available Methods](#-available-methods)
 - [🔒 Security](#-security)
-- [🛠️ Troubleshooting](#-troubleshooting)
+- [🛠️ Troubleshooting](#%EF%B8%8F-troubleshooting)
 - [🧪 Testing](#-testing)
 - [🤝 Contributing](#-contributing)
 
diff --git a/scripts/update_readme_methods.sh b/scripts/update_readme_methods.sh
index ff9fa24..5c85745 100755
--- a/scripts/update_readme_methods.sh
+++ b/scripts/update_readme_methods.sh
@@ -51,7 +51,19 @@ script=$(cat <<'EOF'
     preg_match_all('/^### (.*)/m', $data, $matches);
     $toc = [];
     foreach ($matches['1'] as $match) {
-        $slug = strtolower(preg_replace('/[^A-Za-z-]/', '', str_replace(' ', '-', $match)));
+        $slug = urlencode(
+            strtolower(
+                str_replace(
+                    ' ',
+                    '-',
+                    preg_replace(
+                        '/[^A-Za-z\x{FE0F} ]/u',
+                        '',
+                        $match,
+                    ),
+                )
+            )
+        );
         $href = '#' . $slug;
         $toc[] = '- [' . $match . '](' . $href . ')';
     }