diff --git a/code.py b/code.py
index 50698db..51f29bb 100644
--- a/code.py
+++ b/code.py
@@ -28,6 +28,10 @@ def __init__(self):
 
     @staticmethod
     def to_datetime(as_str: str) -> adafruit_datetime.datetime:
+        # workaround for https://github.com/adafruit/Adafruit_CircuitPython_datetime/issues/22
+        if as_str[-1] == "Z":
+            print(f"Warning: applying workaround for unsupported datetime format {as_str}")
+            as_str = as_str[:-1] + "-00:00"
         return adafruit_datetime.datetime.fromisoformat(as_str)
 
     def init_requests(self) -> None: