diff --git a/tests/common.py b/tests/common.py
index af088b0..0ca15b3 100644
--- a/tests/common.py
+++ b/tests/common.py
@@ -400,7 +400,7 @@ def create_socat_pair() -> Iterator[
                 "-d",
                 "-d",
                 f"PTY,link={right_tty},raw,echo=0",
-                f"UNIX-LISTEN:{bridge}",
+                f"UNIX-LISTEN:{bridge},rcvbuf=1024,sndbuf=1024",
             ],
             stdout=subprocess.DEVNULL,
             stderr=subprocess.PIPE,
@@ -419,7 +419,7 @@ def create_socat_pair() -> Iterator[
                 "-d",
                 "-d",
                 f"PTY,link={left_tty},raw,echo=0",
-                f"UNIX-CONNECT:{bridge}",
+                f"UNIX-CONNECT:{bridge},rcvbuf=1024,sndbuf=1024",
             ],
             stdout=subprocess.DEVNULL,
             stderr=subprocess.PIPE,