diff --git a/tests/unit/Testables/Shell/RealShellTest.swift b/tests/unit/Testables/Shell/RealShellTest.swift
index 96f231ce..e4656652 100644
--- a/tests/unit/Testables/Shell/RealShellTest.swift
+++ b/tests/unit/Testables/Shell/RealShellTest.swift
@@ -9,6 +9,7 @@
 import Testing
 import Foundation
 
+@Suite(.serialized)
 struct RealShellTest {
     var container: Container