diff --git a/internal/agent/agent_test.go b/internal/agent/agent_test.go
index 3719a1150901e621b7998a9f1e7be0a2aa3ef4b8..84a09e81a180c8b50cfeece85bf337fd65ff3dd6 100644
--- a/internal/agent/agent_test.go
+++ b/internal/agent/agent_test.go
@@ -165,7 +165,7 @@ func TestCoderAgent(t *testing.T) {
 				require.NoError(t, err)
 
 				res, err := agent.Run(t.Context(), SessionAgentCall{
-					Prompt:          "use bash to create a file named test.txt with content 'hello bash'",
+					Prompt:          "use bash to create a file named test.txt with content 'hello bash'. do not print its timestamp",
 					SessionID:       session.ID,
 					MaxOutputTokens: 10000,
 				})