diff --git a/battlecode-manager/battlecode_cli.py b/battlecode-manager/battlecode_cli.py
index 1544c95..f605400 100644
--- a/battlecode-manager/battlecode_cli.py
+++ b/battlecode-manager/battlecode_cli.py
@@ -83,7 +83,7 @@ def run_game(game, dockers, args, sock_file):
             team = 'blue'
         else:
             team = 'red'
-        name = f'[{planet}:{team}]'
+        name = '[{}:{}]'.format(planet, team)
         logger = Logger(name)
         docker_inst.stream_logs(line_action=logger)
         player_['logger'] = logger
diff --git a/battlecode-manager/server.py b/battlecode-manager/server.py
index 9f8a4b5..0f7b0f3 100644
--- a/battlecode-manager/server.py
+++ b/battlecode-manager/server.py
@@ -387,7 +387,7 @@ def message(self, state_diff):
             else:
                 logged_in = "false"
 
-            message = f'{{"logged_in":{logged_in},"client_id":"{self.client_id}","error":{error},"message":{state_diff}}}'
+            message = '{{"logged_in":{},"client_id":"{}","error":{},"message":{}}}'.format(logged_in, self.client_id, error, state_diff);
             return message
 
         def player_handler(self):