diff --git a/python/scripts/task_runner.py b/python/scripts/task_runner.py
index a1331803cc..73b4dbae0d 100644
--- a/python/scripts/task_runner.py
+++ b/python/scripts/task_runner.py
@@ -44,7 +44,9 @@ def discover_projects(workspace_pyproject_file: Path) -> list[Path]:
     for project in projects:
         if "*" in project:
             globbed = glob.glob(str(project), root_dir=workspace_pyproject_file.parent)
-            globbed_paths = [Path(p) for p in globbed]
+            globbed_paths = [
+                Path(path) for path in globbed if (workspace_pyproject_file.parent / path / "pyproject.toml").is_file()
+            ]
             all_projects.extend(globbed_paths)
         else:
             all_projects.append(Path(project))
diff --git a/python/scripts/tests/test_task_runner.py b/python/scripts/tests/test_task_runner.py
new file mode 100644
index 0000000000..ae94f880aa
--- /dev/null
+++ b/python/scripts/tests/test_task_runner.py
@@ -0,0 +1,17 @@
+# Copyright (c) Microsoft. All rights reserved.
+
+from pathlib import Path
+
+from scripts.task_runner import discover_projects
+
+
+def test_discover_projects_ignores_glob_matches_without_pyproject(tmp_path: Path) -> None:
+    workspace_pyproject = tmp_path / "pyproject.toml"
+    workspace_pyproject.write_text('[tool.uv.workspace]\nmembers = ["packages/*"]\n')
+
+    valid_project = tmp_path / "packages" / "valid"
+    valid_project.mkdir(parents=True)
+    (valid_project / "pyproject.toml").write_text('[project]\nname = "valid"\nversion = "1.0.0"\n')
+    (tmp_path / "packages" / "stale").mkdir()
+
+    assert discover_projects(workspace_pyproject) == [Path("packages/valid")]
diff --git a/python/scripts/workspace_poe_tasks.py b/python/scripts/workspace_poe_tasks.py
index 5c8f82ebc7..984a838c79 100644
--- a/python/scripts/workspace_poe_tasks.py
+++ b/python/scripts/workspace_poe_tasks.py
@@ -520,6 +520,10 @@ def run_aggregate_test(project_pattern: str, cov: bool, extra_args: list[str]) -
             return
 
     test_dirs = [relative_path(path) for path in collect_test_dirs(projects)]
+    if project_pattern == "*":
+        script_test_dir = WORKSPACE_ROOT / "scripts" / "tests"
+        if script_test_dir.is_dir():
+            test_dirs.append(relative_path(script_test_dir))
     if not test_dirs:
         print("[yellow]No test directories found for the selected projects, skipping pytest.[/yellow]")
         return