diff --git a/pyproject.toml b/pyproject.toml
index c3ec9ed16cf..bacdba53e17 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -129,6 +129,7 @@ test = [
     "cwltest>=2.5.20240906231108",  # Python 3.13 support
     "fluent-logger",
     "gcsfs",
+    "htcondor ; sys_platform == 'linux'",
     "hvac",
     "lxml!=4.2.2",
     "onedatafilerestclient==21.2.5.2",