diff --git a/Ports/python3/patches/ReadMe.md b/Ports/python3/patches/ReadMe.md
index c862a201e9..b1c58da503 100644
--- a/Ports/python3/patches/ReadMe.md
+++ b/Ports/python3/patches/ReadMe.md
@@ -27,3 +27,7 @@ Make some tweaks to Python's `setup.py` files:
 - Add `/usr/local/lib` / `/usr/local/include` to the system lib / include dirs, relative to the sysroot when crosscompiling. These are by default only included when not crosscompiling for some reason.
 - Add `/usr/local/include/ncurses` to the curses include paths so it can build the `_curses` module. This is by default included for a bunch of extensions, but not `_curses`.
 - Add `/usr/local/includes/uuid` to the uuid include paths so it can build the `_uuid` module. This is by default included for a bunch of extensions, but not `_uuid`.
+
+## `xmlrcp_client.patch`
+
+Fix xmlrpc.client module so it can be imported. It otherwise a call to strftime raises a ValueError that the code is not prepared to handle.
diff --git a/Ports/python3/patches/xmlrcp_client.patch b/Ports/python3/patches/xmlrcp_client.patch
new file mode 100644
index 0000000000..2b479d03e7
--- /dev/null
+++ b/Ports/python3/patches/xmlrcp_client.patch
@@ -0,0 +1,27 @@
+--- Python-3.10.0/Lib/xmlrpc/client.py	2021-10-06 14:28:27.231681509 +0800
++++ Python-3.10.0/Lib/xmlrpc/client.py	2021-10-06 14:31:01.712267885 +0800
+@@ -264,16 +264,22 @@
+ 
+ # Issue #13305: different format codes across platforms
+ _day0 = datetime(1, 1, 1)
+-if _day0.strftime('%Y') == '0001':      # Mac OS X
++def _try(fmt):
++    try:
++        return _day0.strftime(fmt) == '0001'
++    except ValueError:
++        return False
++if _try('%Y'):      # Mac OS X
+     def _iso8601_format(value):
+         return value.strftime("%Y%m%dT%H:%M:%S")
+-elif _day0.strftime('%4Y') == '0001':   # Linux
++elif _try('%4Y'):   # Linux
+     def _iso8601_format(value):
+         return value.strftime("%4Y%m%dT%H:%M:%S")
+ else:
+     def _iso8601_format(value):
+         return value.strftime("%Y%m%dT%H:%M:%S").zfill(17)
+ del _day0
++del _try
+ 
+ 
+ def _strftime(value):