diff --git a/pyproject.toml b/pyproject.toml
index abff2aa1..a945de6e 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -91,6 +91,9 @@ norecursedirs = [
 filterwarnings = [
     "error::ResourceWarning",
 ]
+markers = [
+    "soctests",
+]
 
 [tool.ruff]
 line-length = 110