diff --git a/pyproject.toml b/pyproject.toml
index a8b907644a..9bc5272e8c 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -126,6 +126,9 @@ filterwarnings = [
   "error::DeprecationWarning:conda_build",
   # ignore numpy.distutils error
   'ignore:\s+`numpy.distutils` is deprecated:DeprecationWarning:conda_build._load_setup_py_data',
+  # ignore conda-index error
+  "ignore::PendingDeprecationWarning:conda_index",
+  "ignore::DeprecationWarning:conda_index",
 ]
 markers = [
   "serial: execute test serially (to avoid race conditions)",