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diff --git a/circuitpython/shared-bindings/atexit/__init__.c b/circuitpython/shared-bindings/atexit/__init__.c
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+++ b/circuitpython/shared-bindings/atexit/__init__.c
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+/*
+ * This file is part of the Micro Python project, http://micropython.org/
+ *
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2021 microDev
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+#include "shared-module/atexit/__init__.h"
+
+//| """Atexit Module
+//|
+//| This module defines functions to register and unregister cleanup functions.
+//| Functions thus registered are automatically executed upon normal vm termination.
+//|
+//| These functions are run in the reverse order in which they were registered;
+//| if you register ``A``, ``B``, and ``C``, they will be run in the order ``C``, ``B``, ``A``.
+//|
+//| |see_cpython_module| :mod:`cpython:atexit`.
+//| """
+//| ...
+//|
+
+//| def register(func: Callable[..., Any], *args: Optional[Any], **kwargs: Optional[Any]) -> Callable[..., Any]:
+//|
+//|     """Register func as a function to be executed at termination.
+//|
+//|        Any optional arguments that are to be passed to func must be passed as arguments to `register()`.
+//|        It is possible to register the same function and arguments more than once.
+//|
+//|        At normal program termination (for instance, if `sys.exit()` is called or the vm execution completes),
+//|        all functions registered are called in last in, first out order.
+//|
+//|        If an exception is raised during execution of the exit handler,
+//|        a traceback is printed (unless `SystemExit` is raised) and the execution stops.
+//|
+//|        This function returns func, which makes it possible to use it as a decorator.
+//|
+//|     """
+//|     ...
+//|
+STATIC mp_obj_t atexit_register(size_t n_args, const mp_obj_t *pos_args, mp_map_t *kw_args) {
+    shared_module_atexit_register(pos_args[0], (n_args - 1), ((n_args > 1) ? &pos_args[1] : NULL), kw_args);
+    return pos_args[0];
+}
+STATIC MP_DEFINE_CONST_FUN_OBJ_KW(atexit_register_obj, 1, atexit_register);
+
+//| def unregister(func: Callable[..., Any]) -> None:
+//|
+//|     """Remove func from the list of functions to be run at termination.
+//|
+//|        `unregister()` silently does nothing if func was not previously registered. If func has been registered more than once,
+//|        every occurrence of that function in the atexit call stack will be removed.
+//|
+//|     """
+//|     ...
+//|
+STATIC mp_obj_t atexit_unregister(const mp_obj_t self_in) {
+    shared_module_atexit_unregister(&self_in);
+    return mp_const_none;
+}
+STATIC MP_DEFINE_CONST_FUN_OBJ_1(atexit_unregister_obj, atexit_unregister);
+
+STATIC const mp_rom_map_elem_t atexit_module_globals_table[] = {
+    // module name
+    { MP_ROM_QSTR(MP_QSTR___name__), MP_ROM_QSTR(MP_QSTR_atexit) },
+    // module functions
+    { MP_ROM_QSTR(MP_QSTR_register), MP_ROM_PTR(&atexit_register_obj) },
+    { MP_ROM_QSTR(MP_QSTR_unregister), MP_ROM_PTR(&atexit_unregister_obj) },
+};
+STATIC MP_DEFINE_CONST_DICT(atexit_module_globals, atexit_module_globals_table);
+
+const mp_obj_module_t atexit_module = {
+    .base = { &mp_type_module },
+    .globals = (mp_obj_dict_t *)&atexit_module_globals,
+};
+
+MP_REGISTER_MODULE(MP_QSTR_atexit, atexit_module, CIRCUITPY_ATEXIT);