From e128079f977b3dc476c1fed19a88c90620440bf8 Mon Sep 17 00:00:00 2001
From: Matt Craig <mattwcraig@gmail.com>
Date: Mon, 11 Dec 2023 09:27:37 -0600
Subject: [PATCH] Escape the regular expression

---
 pyproject.toml | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/pyproject.toml b/pyproject.toml
index 5f2c1726..12a5db3d 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -140,7 +140,7 @@ xfail_strict = true
 filterwarnings = [
     "error",
     # Apparently bqplot is using deprecated traitlets APIs
-    'ignore:\s+Sentinel is not a public part of the traitlets API:DeprecationWarning',
+    'ignore:\\s+Sentinel is not a public part of the traitlets API:DeprecationWarning',
     # ginga is using something from asdf that has been deprecated
     'ignore:AsdfInFits has been deprecated:DeprecationWarning',
     # ipyautoui generates this warning...