diff --git a/tests/StockSim.IntegrationTests/Security/CspTests.cs b/tests/StockSim.IntegrationTests/Security/CspTests.cs
index 7585eca..4faff54 100644
--- a/tests/StockSim.IntegrationTests/Security/CspTests.cs
+++ b/tests/StockSim.IntegrationTests/Security/CspTests.cs
@@ -22,5 +22,6 @@ public async Task Root_Sends_CSP_Header()
         var csp = string.Join(" ", res.Headers.GetValues("Content-Security-Policy"));
         Assert.Contains("connect-src", csp);
         Assert.Contains("'self'", csp);
+        Assert.Contains("https://apis.example.com", csp);
     }
 }