diff --git a/apps/api/src/services/terminal_session.py b/apps/api/src/services/terminal_session.py
index db26918..a8c1f50 100644
--- a/apps/api/src/services/terminal_session.py
+++ b/apps/api/src/services/terminal_session.py
@@ -61,11 +61,15 @@ class TerminalSession:
         logger.info(f"Starting terminal session {self.session_id} for container {self.container_id} with initial size {self._cols}x{self._rows}")
         
         # Start docker exec with the slave fd as stdin/stdout/stderr
-        # Using -it because the slave fd IS a TTY
+        # Using -i (interactive) but NOT -t (tty) because:
+        # 1. The slave fd IS a TTY
+        # 2. docker exec -t creates its OWN PTY inside the container
+        # 3. This prevents host PTY resize from propagating to the container shell
+        # By using only -i, docker exec uses our PTY slave directly
         self.process = await asyncio.create_subprocess_exec(
             "docker",
             "exec",
-            "-it",
+            "-i",
             "-e",
             "TERM=xterm",
             self.container_id,
@@ -151,17 +155,6 @@ class TerminalSession:
         self._rows = rows
         logger.info(f"resize() called for session {self.session_id}: {cols}x{rows}")
         self._set_terminal_size(cols, rows)
-        
-        # Docker exec doesn't forward PTY resize to the container process,
-        # so we need to explicitly set the size inside the container shell.
-        # Send on every resize so the container shell always matches the frontend.
-        # Use stty -echo to prevent the command from being visible, then clear the line.
-        stty_cmd = (
-            f"stty -echo; stty cols {cols} rows {rows}; stty echo\n"
-            f"\x1b[A\x1b[M"  # Move up 1 line and delete it (clears the stty command)
-        ).encode()
-        await self.write_input(stty_cmd)
-        logger.debug(f"Sent stty resize to container for session {self.session_id}: {cols}x{rows}")
 
     async def reset(self) -> None:
         """Reset the session by killing the process and clearing state."""