diff --git a/ezoff/locations.py b/ezoff/locations.py
index 7398364..0ce4253 100644
--- a/ezoff/locations.py
+++ b/ezoff/locations.py
@@ -303,10 +303,20 @@ def deactivate_location(location_num: int) -> dict:
 @Decorators.check_env_vars
 def update_location(location_num: int, location: dict) -> dict:
     """
-    Updates a location
+    Updates a location.
+    Note: The location's parent ID (location[parent_id]) is a required field for this call,
+    because EZOffice will wipe out whatever is currently in that field
+    if you don't include it. No idea why. If you're not changing the parent
+    location of the location, you just use the current parent ID. The documentation
+    also suggests that location[name] is a required field, but that doesn't appear
+    to be the case. Not sure if documentation is wrong or I'm misunderstanding what
+    they're saying.
     https://ezo.io/ezofficeinventory/developers/#api-update-location
     """
 
+    if "location[parent_id]" not in location:
+        raise ValueError("'location[parent_id]' is a required key")
+
     # Remove any keys that are not valid
     valid_keys = [
         "location[parent_id]",
diff --git a/setup.py b/setup.py
index 9b4f2f4..a4fbd83 100644
--- a/setup.py
+++ b/setup.py
@@ -8,7 +8,7 @@
 
 setup(
     name="ezoff",
-    version="0.1.3",
+    version="0.1.4",
     description="Python package that acts as a wrapper for the EZOffice API.",
     long_description=long_description,
     long_description_content_type="text/markdown",