diff --git a/cli/src/web_ui.html b/cli/src/web_ui.html
index 093b09ba..45dd5db0 100644
--- a/cli/src/web_ui.html
+++ b/cli/src/web_ui.html
@@ -1,4 +1,5 @@
 <head>
+  <meta charset="utf-8">
   <title>tree-sitter THE_LANGUAGE_NAME</title>
   <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/codemirror/5.45.0/codemirror.min.css">
   <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/clusterize.js/0.18.0/clusterize.min.css">
