diff --git a/pyscript.core/package-lock.json b/pyscript.core/package-lock.json
index 6db70a3d..bd395b4d 100644
--- a/pyscript.core/package-lock.json
+++ b/pyscript.core/package-lock.json
@@ -1,12 +1,12 @@
 {
     "name": "@pyscript/core",
-    "version": "0.4.9",
+    "version": "0.4.10",
     "lockfileVersion": 3,
     "requires": true,
     "packages": {
         "": {
             "name": "@pyscript/core",
-            "version": "0.4.9",
+            "version": "0.4.10",
             "license": "APACHE-2.0",
             "dependencies": {
                 "@ungap/with-resolvers": "^0.1.0",
diff --git a/pyscript.core/package.json b/pyscript.core/package.json
index 7adf1130..691f4c86 100644
--- a/pyscript.core/package.json
+++ b/pyscript.core/package.json
@@ -1,6 +1,6 @@
 {
     "name": "@pyscript/core",
-    "version": "0.4.9",
+    "version": "0.4.10",
     "type": "module",
     "description": "PyScript",
     "module": "./index.js",
diff --git a/pyscript.core/src/stdlib/pyscript/ffi.py b/pyscript.core/src/stdlib/pyscript/ffi.py
new file mode 100644
index 00000000..fd6ae658
--- /dev/null
+++ b/pyscript.core/src/stdlib/pyscript/ffi.py
@@ -0,0 +1,18 @@
+try:
+    import js
+    from pyodide.ffi import create_proxy as _cp
+    from pyodide.ffi import to_js as _py_tjs
+
+    from_entries = js.Object.fromEntries
+
+    def _tjs(value, **kw):
+        if not hasattr(kw, "dict_converter"):
+            kw["dict_converter"] = from_entries
+        return _py_tjs(value, **kw)
+
+except:
+    from jsffi import create_proxy as _cp
+    from jsffi import to_js as _tjs
+
+create_proxy = _cp
+to_js = _tjs
diff --git a/pyscript.core/test/ffi.html b/pyscript.core/test/ffi.html
new file mode 100644
index 00000000..1c29ccb8
--- /dev/null
+++ b/pyscript.core/test/ffi.html
@@ -0,0 +1,26 @@
+<!doctype html>
+<html lang="en">
+    <head>
+        <meta charset="UTF-8" />
+        <meta name="viewport" content="width=device-width, initial-scale=1.0" />
+        <title>PyScript FFI</title>
+        <link rel="stylesheet" href="../dist/core.css">
+        <script type="module" src="../dist/core.js"></script>
+    </head>
+    <body>
+      <script type="mpy">
+          from pyscript import document
+          from pyscript.ffi import to_js
+          document.documentElement.classList.add(
+            to_js({"ok": "mpy"}).ok
+          )
+      </script>
+      <script type="py">
+          from pyscript import document
+          from pyscript.ffi import to_js
+          document.documentElement.classList.add(
+            to_js({"ok": "py"}).ok
+          )
+      </script>
+    </body>
+</html>
diff --git a/pyscript.core/test/mpy.spec.js b/pyscript.core/test/mpy.spec.js
index c1efc70b..fe94019c 100644
--- a/pyscript.core/test/mpy.spec.js
+++ b/pyscript.core/test/mpy.spec.js
@@ -83,3 +83,8 @@ test('MicroPython + Pyodide fetch', async ({ page }) => {
   await page.goto('http://localhost:8080/test/fetch.html');
   await page.waitForSelector('html.mpy.py');
 });
+
+test('MicroPython + Pyodide ffi', async ({ page }) => {
+  await page.goto('http://localhost:8080/test/ffi.html');
+  await page.waitForSelector('html.mpy.py');
+});
diff --git a/pyscript.core/types/stdlib/pyscript.d.ts b/pyscript.core/types/stdlib/pyscript.d.ts
index 47116fa5..648b493e 100644
--- a/pyscript.core/types/stdlib/pyscript.d.ts
+++ b/pyscript.core/types/stdlib/pyscript.d.ts
@@ -4,6 +4,7 @@ declare namespace _default {
         "display.py": string;
         "event_handling.py": string;
         "fetch.py": string;
+        "ffi.py": string;
         "magic_js.py": string;
         "util.py": string;
     };
