diff --git a/requirements.txt b/requirements.txt
index e69de29..b9d6fbf 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -0,0 +1,2 @@
+pytz
+requests
\ No newline at end of file
diff --git a/requirements_dev.txt b/requirements_dev.txt
index e69de29..b9d6fbf 100644
--- a/requirements_dev.txt
+++ b/requirements_dev.txt
@@ -0,0 +1,2 @@
+pytz
+requests
\ No newline at end of file
diff --git a/yoto_api/YotoAPI.py b/yoto_api/YotoAPI.py
index a23d28b..51714c9 100644
--- a/yoto_api/YotoAPI.py
+++ b/yoto_api/YotoAPI.py
@@ -50,21 +50,18 @@ def login(self, username: str, password: str) -> Token:
     # pass='audience=https%3A//api.yotoplay.com&client_id=FILL_THIS_IN&grant_type=password&password=FILL_THIS_IN&scope=openid%20email%20profile%20offline_access&username=FILL_THIS_IN%40gmail.com'
     # curl -d "$pass" https://api.yotoplay.com/auth/token | jq '.access_token'
 
-    def update_devices(self, token) -> dict[YotoPlayer]:
-        response = self._get_devices(token)
-        result = {}
-        for device in response["devices"]:
-            player: YotoPlayer = YotoPlayer(
-                id=device["deviceId"],
-                name=device["name"],
-                deviceType=device["deviceType"],
-                online=device["online"],
-                last_updated_at=datetime.datetime.now(pytz.utc)
-            )
-            result[player.id] = player
+    def update_devices(self, token, devices) -> dict[YotoPlayer]:
+        response = self._get_devices(token)      
+        if devices is None:
+            devices = {}
+        else: 
+            for player in response["devices"]:
+                devices[player.id].id = player["deviceId"]
+                devices[player.id].name = player["name"]
+                devices[player.id].deviceType = player["deviceType"]
+                devices[player.id].last_update_at = datetime.datetime.now(pytz.utc)
+                devices[player.id].online = player["online"],
 
-        return result
-        # TODO: parse the data and return a list of yoto devices.
 
     def update_library(self, token) -> list[Card]:
         cards = self._get_cards(token)
diff --git a/yoto_api/YotoManager.py b/yoto_api/YotoManager.py
index 068abe8..a6a6573 100644
--- a/yoto_api/YotoManager.py
+++ b/yoto_api/YotoManager.py
@@ -27,7 +27,7 @@ def initialize(self) -> None:
 
     def update_player_status(self) -> None:
         # Updates the data with current player data.
-        self.players = self.api.update_devices(self.token)
+        self.players = self.api.update_devices(self.token, self.players)
 
     def update_cards(self) -> None:
         # Updates library and all card data.  Typically only required on startup.