diff --git a/pyproject.toml b/pyproject.toml
index 2631a18..e59723b 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -57,7 +57,7 @@ build-backend = "uv_build"
 dev = [
     "ruff>=0.9",
     "ty>=0.0.32",
-    "pexpect>=4.8",
+    "pexpect>=4.9.0",
     "pytest>=8.0",
     "pytest-xdist>=3.5",
     "vcrpy>=8.1.1",