diff --git a/python_files/python_server.py b/python_files/python_server.py
index ebcb67d22a5e..1689d9b8f7f9 100644
--- a/python_files/python_server.py
+++ b/python_files/python_server.py
@@ -163,7 +163,7 @@ def get_value(self) -> str:
 def get_headers():
     headers = {}
     while True:
-        line = STDIN.readline().strip()
+        line = STDIN.buffer.readline().decode().strip()
         if not line:
             break
         name, value = line.split(":", 1)