diff --git a/src/tests/test_ai_tui_agent_harness.py b/src/tests/test_ai_tui_agent_harness.py
index ed228a38..c01b4c26 100644
--- a/src/tests/test_ai_tui_agent_harness.py
+++ b/src/tests/test_ai_tui_agent_harness.py
@@ -6,6 +6,8 @@ import sys
 
 import pytest
 
+pytest.importorskip("pty")
+
 
 def _load_harness_module():
     repo_root = Path(__file__).resolve().parents[2]
diff --git a/test_replace8.py b/test_replace8.py
new file mode 100644
index 00000000..ba0a5342
--- /dev/null
+++ b/test_replace8.py
@@ -0,0 +1,13 @@
+import re
+
+with open("src/tests/test_ai_tui_agent_harness.py", "r") as f:
+    content = f.read()
+
+new_content = re.sub(
+    r"(import sys\n\nimport pytest)",
+    r"import sys\n\nimport pytest\n\npytest.importorskip('pty')",
+    content
+)
+
+with open("src/tests/test_ai_tui_agent_harness.py", "w") as f:
+    f.write(new_content)