diff --git a/resources/public/bookmarklet.html b/resources/public/bookmarklet.html
index 15dce60..e2cc947 100644
--- a/resources/public/bookmarklet.html
+++ b/resources/public/bookmarklet.html
@@ -4,9 +4,8 @@
     <meta charset="utf-8">
     <link rel="stylesheet" href="css/style.css">
     <script src="https://babashka.github.io/scittle/js/scittle.js" type="application/javascript"></script>
-
-    <script crossorigin src="https://unpkg.com/react@17/umd/react.production.min.js"></script>
-    <script crossorigin src="https://unpkg.com/react-dom@17/umd/react-dom.production.min.js"></script>
+<script crossorigin src="https://cdn.jsdelivr.net/npm/react@18/umd/react.production.min.js"></script>
+    <script crossorigin src="https://cdn.jsdelivr.net/npm/react-dom@18/umd/react-dom.production.min.js"></script>
     <script src="https://babashka.github.io/scittle/js/scittle.reagent.js" type="application/javascript"></script>
 
     <script src="https://cdnjs.cloudflare.com/ajax/libs/highlight.js/10.7.2/highlight.min.js" type="text/javascript"></script>
diff --git a/resources/public/codemirror.html b/resources/public/codemirror.html
index f16344a..d512ebe 100644
--- a/resources/public/codemirror.html
+++ b/resources/public/codemirror.html
@@ -3,8 +3,8 @@
     <script async src="https://ga.jspm.io/npm:es-module-shims@1.6.1/dist/es-module-shims.js"></script>
     <script src="https://cdn.jsdelivr.net/npm/scittle@0.6.22/dist/scittle.js"></script>
     <script>scittle.core.disable_auto_eval();</script>
-    <script src="https://unpkg.com/react@18/umd/react.production.min.js"></script>
-    <script src="https://unpkg.com/react-dom@18/umd/react-dom.production.min.js"></script>
+    <script crossorigin src="https://cdn.jsdelivr.net/npm/react@18/umd/react.production.min.js"></script>
+    <script crossorigin src="https://cdn.jsdelivr.net/npm/react-dom@18/umd/react-dom.production.min.js"></script>
     <script src="https://cdn.jsdelivr.net/npm/scittle@0.6.22/dist/scittle.reagent.js">    </script>
     <script src="https://cdn.jsdelivr.net/npm/scittle@0.6.22/dist/scittle.re-frame.js">    </script>
     <script src="https://cdn.jsdelivr.net/npm/scittle@0.6.22/dist/scittle.promesa.js">    </script>
diff --git a/resources/public/html/local.html b/resources/public/html/local.html
index 603a5bc..d9c36bf 100644
--- a/resources/public/html/local.html
+++ b/resources/public/html/local.html
@@ -1,8 +1,8 @@
 <html>
   <head>
     <script src="../js/scittle.js" type="application/javascript"></script>
-    <script crossorigin src="https://unpkg.com/react@17/umd/react.production.min.js"></script>
-    <script crossorigin src="https://unpkg.com/react-dom@17/umd/react-dom.production.min.js"></script>
+    <script crossorigin src="https://cdn.jsdelivr.net/npm/react@18/umd/react.production.min.js"></script>
+    <script crossorigin src="https://cdn.jsdelivr.net/npm/react-dom@18/umd/react-dom.production.min.js"></script>
     <script src="../js/scittle.reagent.js" type="application/javascript"></script>
     <script type="application/x-scittle">
       (defn f [x]
diff --git a/resources/public/html/reagent.html b/resources/public/html/reagent.html
index 355dd64..7a5421a 100644
--- a/resources/public/html/reagent.html
+++ b/resources/public/html/reagent.html
@@ -1,8 +1,8 @@
 <html>
   <head>
     <script src="https://cdn.jsdelivr.net/npm/scittle@0.6.22/dist/scittle.js" type="application/javascript"></script>
-    <script crossorigin src="https://unpkg.com/react@17/umd/react.production.min.js"></script>
-    <script crossorigin src="https://unpkg.com/react-dom@17/umd/react-dom.production.min.js"></script>
+    <script crossorigin src="https://cdn.jsdelivr.net/npm/react@18/umd/react.production.min.js"></script>
+    <script crossorigin src="https://cdn.jsdelivr.net/npm/react-dom@18/umd/react-dom.production.min.js"></script>
     <script src="https://cdn.jsdelivr.net/npm/scittle@0.6.22/dist/scittle.reagent.js" type="application/javascript"></script>
     <script type="application/x-scittle">
       (require '[reagent.core :as r]
diff --git a/resources/public/test/codemirror.html b/resources/public/test/codemirror.html
index 04d7e30..8bf8299 100644
--- a/resources/public/test/codemirror.html
+++ b/resources/public/test/codemirror.html
@@ -4,8 +4,8 @@
     <script async src="https://ga.jspm.io/npm:es-module-shims@1.6.1/dist/es-module-shims.js"></script>
     <script src="/js/scittle.js"></script>
     <script>scittle.core.disable_auto_eval();</script>
-    <script src="https://unpkg.com/react@18/umd/react.production.min.js"></script>
-    <script src="https://unpkg.com/react-dom@18/umd/react-dom.production.min.js"></script>
+    <script crossorigin src="https://cdn.jsdelivr.net/npm/react@18/umd/react.production.min.js"></script>
+    <script crossorigin src="https://cdn.jsdelivr.net/npm/react-dom@18/umd/react-dom.production.min.js"></script>
     <script src="/js/scittle.reagent.js">    </script>
     <script src="/js/scittle.re-frame.js">    </script>
     <script src="/js/scittle.pprint.js">    </script>
diff --git a/resources/public/tictactoe.html b/resources/public/tictactoe.html
index 5b62e74..4462881 100644
--- a/resources/public/tictactoe.html
+++ b/resources/public/tictactoe.html
@@ -3,9 +3,8 @@
   <head>
     <link rel="stylesheet" href="css/style.css">
     <script src="js/scittle.js" type="application/javascript"></script>
-
-    <script crossorigin src="https://unpkg.com/react@17/umd/react.production.min.js"></script>
-    <script crossorigin src="https://unpkg.com/react-dom@17/umd/react-dom.production.min.js"></script>
+<script crossorigin src="https://cdn.jsdelivr.net/npm/react@18/umd/react.production.min.js"></script>
+    <script crossorigin src="https://cdn.jsdelivr.net/npm/react-dom@18/umd/react-dom.production.min.js"></script>
     <script src="js/scittle.reagent.js" type="application/javascript"></script>
 
     <script type="application/x-scittle" src="cljs/tictactoe.cljs"></script>
