diff --git a/src/agent_merge_queue/pipeline.py b/src/agent_merge_queue/pipeline.py
index 40497cb..c466519 100644
--- a/src/agent_merge_queue/pipeline.py
+++ b/src/agent_merge_queue/pipeline.py
@@ -57,26 +57,46 @@ def release_state(
     ci_fence = parse_time(
         str((ci or {}).get("updated_at") or (ci or {}).get("created_at") or "")
     )
+    eligible_deploys = [
+        run
+        for run in runs
+        if not (
+            str(run.get("status") or "") == "completed"
+            and str(run.get("conclusion") or "") == "skipped"
+        )
+        and (
+            ci_fence is None
+            or (
+                (created_at := parse_time(str(run.get("created_at") or "")))
+                is not None
+                and created_at >= ci_fence
+            )
+        )
+    ]
     deploy = latest_run(
+        eligible_deploys,
+        config.deploy_workflows,
+        main_sha,
+    )
+    successful_deploy = latest_run(
         [
             run
-            for run in runs
-            if not (
-                str(run.get("status") or "") == "completed"
-                and str(run.get("conclusion") or "") == "skipped"
-            )
-            and (
-                ci_fence is None
-                or (
-                    (created_at := parse_time(str(run.get("created_at") or "")))
-                    is not None
-                    and created_at >= ci_fence
-                )
-            )
+            for run in eligible_deploys
+            if str(run.get("status") or "") == "completed"
+            and str(run.get("conclusion") or "") == "success"
         ],
         config.deploy_workflows,
         main_sha,
     )
+    # Successful exact-main release evidence is durable. A later duplicate
+    # dispatch may be cancelled by workflow concurrency, but it cannot make an
+    # already verified revision become undeployed.
+    if (
+        successful_deploy is not None
+        and str((deploy or {}).get("status") or "") == "completed"
+        and str((deploy or {}).get("conclusion") or "") == "cancelled"
+    ):
+        deploy = successful_deploy
     active_ci = [
         workflow_run(run)
         for run in runs
diff --git a/tests/test_pipeline.py b/tests/test_pipeline.py
index 9243871..31acf18 100644
--- a/tests/test_pipeline.py
+++ b/tests/test_pipeline.py
@@ -77,6 +77,75 @@ def test_release_state_ignores_skipped_deployment_wakeups(self) -> None:
         self.assertEqual(value["state"], "awaiting-deploy")
         self.assertIsNone(value["latest_deploy"])
 
+    def test_successful_deploy_survives_later_cancelled_duplicate(self) -> None:
+        sha = "a" * 40
+        runs = [
+            {
+                "id": 1,
+                "name": "CI",
+                "head_sha": sha,
+                "status": "completed",
+                "conclusion": "success",
+                "created_at": "2026-06-20T00:00:00Z",
+                "updated_at": "2026-06-20T00:00:30Z",
+            },
+            {
+                "id": 2,
+                "name": "Deploy",
+                "head_sha": sha,
+                "status": "completed",
+                "conclusion": "success",
+                "created_at": "2026-06-20T00:01:00Z",
+            },
+            {
+                "id": 3,
+                "name": "Deploy",
+                "head_sha": sha,
+                "status": "completed",
+                "conclusion": "cancelled",
+                "created_at": "2026-06-20T00:02:00Z",
+            },
+        ]
+
+        value = release_state(main_sha=sha, runs=runs, config=CONFIG.pipeline)
+
+        self.assertEqual(value["state"], "verified")
+        self.assertEqual(value["latest_deploy"]["id"], 2)
+
+    def test_later_failed_deploy_is_not_hidden_by_older_success(self) -> None:
+        sha = "a" * 40
+        runs = [
+            {
+                "id": 1,
+                "name": "CI",
+                "head_sha": sha,
+                "status": "completed",
+                "conclusion": "success",
+                "created_at": "2026-06-20T00:00:00Z",
+            },
+            {
+                "id": 2,
+                "name": "Deploy",
+                "head_sha": sha,
+                "status": "completed",
+                "conclusion": "success",
+                "created_at": "2026-06-20T00:01:00Z",
+            },
+            {
+                "id": 3,
+                "name": "Deploy",
+                "head_sha": sha,
+                "status": "completed",
+                "conclusion": "failure",
+                "created_at": "2026-06-20T00:02:00Z",
+            },
+        ]
+
+        value = release_state(main_sha=sha, runs=runs, config=CONFIG.pipeline)
+
+        self.assertEqual(value["state"], "deploy-failed")
+        self.assertEqual(value["latest_deploy"]["id"], 3)
+
     def test_new_successful_ci_supersedes_an_older_failed_deploy(self) -> None:
         sha = "a" * 40
         runs = [