diff --git a/src/backend/postmaster/interrupt.c b/src/backend/postmaster/interrupt.c
index 6d4bd76bf81..3041c4a0107 100644
--- a/src/backend/postmaster/interrupt.c
+++ b/src/backend/postmaster/interrupt.c
@@ -98,9 +98,8 @@ SignalHandlerForCrashExit(SIGNAL_ARGS)
  * shut down and exit.
  *
  * Typically, this handler would be used for SIGTERM, but some processes use
- * other signals. In particular, the checkpointer exits on SIGUSR2, and the WAL
- * writer and the logical replication parallel apply worker exits on either
- * SIGINT or SIGTERM.
+ * other signals. In particular, the checkpointer and parallel apply worker
+ * exit on SIGUSR2, and the WAL writer exits on either SIGINT or SIGTERM.
  *
  * ShutdownRequestPending should be checked at a convenient place within the
  * main loop, or else the main loop should call HandleMainLoopInterrupts.
diff --git a/src/backend/replication/logical/applyparallelworker.c b/src/backend/replication/logical/applyparallelworker.c
index a24709ec7a5..4a2c67f9e40 100644
--- a/src/backend/replication/logical/applyparallelworker.c
+++ b/src/backend/replication/logical/applyparallelworker.c
@@ -872,10 +872,17 @@ ParallelApplyWorkerMain(Datum main_arg)
 
 	InitializingApplyWorker = true;
 
-	/* Setup signal handling. */
+	/*
+	 * Setup signal handling.
+	 *
+	 * Note: We intentionally used SIGUSR2 to trigger a graceful shutdown
+	 * initiated by the leader apply worker. This helps to differentiate it
+	 * from the case where we abort the current transaction and exit on
+	 * receiving SIGTERM.
+	 */
 	pqsignal(SIGHUP, SignalHandlerForConfigReload);
-	pqsignal(SIGINT, SignalHandlerForShutdownRequest);
 	pqsignal(SIGTERM, die);
+	pqsignal(SIGUSR2, SignalHandlerForShutdownRequest);
 	BackgroundWorkerUnblockSignals();
 
 	/*
@@ -974,9 +981,9 @@ ParallelApplyWorkerMain(Datum main_arg)
 
 	/*
 	 * The parallel apply worker must not get here because the parallel apply
-	 * worker will only stop when it receives a SIGTERM or SIGINT from the
-	 * leader, or when there is an error. None of these cases will allow the
-	 * code to reach here.
+	 * worker will only stop when it receives a SIGTERM or SIGUSR2 from the
+	 * leader, or SIGINT from itself, or when there is an error. None of these
+	 * cases will allow the code to reach here.
 	 */
 	Assert(false);
 }
diff --git a/src/backend/replication/logical/launcher.c b/src/backend/replication/logical/launcher.c
index 423d85fd40c..a49c6648cc2 100644
--- a/src/backend/replication/logical/launcher.c
+++ b/src/backend/replication/logical/launcher.c
@@ -624,7 +624,7 @@ logicalrep_worker_stop(Oid subid, Oid relid)
 /*
  * Stop the given logical replication parallel apply worker.
  *
- * Node that the function sends SIGINT instead of SIGTERM to the parallel apply
+ * Node that the function sends SIGUSR2 instead of SIGTERM to the parallel apply
  * worker so that the worker exits cleanly.
  */
 void
@@ -662,7 +662,7 @@ logicalrep_pa_worker_stop(ParallelApplyWorkerInfo *winfo)
 	 * Only stop the worker if the generation matches and the worker is alive.
 	 */
 	if (worker->generation == generation && worker->proc)
-		logicalrep_worker_stop_internal(worker, SIGINT);
+		logicalrep_worker_stop_internal(worker, SIGUSR2);
 
 	LWLockRelease(LogicalRepWorkerLock);
 }