diff --git a/src/allora_sdk/worker/reputer.py b/src/allora_sdk/worker/reputer.py
index e4472ad..51c8fb0 100644
--- a/src/allora_sdk/worker/reputer.py
+++ b/src/allora_sdk/worker/reputer.py
@@ -10,9 +10,9 @@
     CanSubmitReputerPayloadRequest,
     EventReputerSubmissionWindowOpened,
     GetNetworkInferencesAtBlockRequest,
+    GetOpenReputerSubmissionWindowsRequest,
     GetStakeFromReputerInTopicInSelfRequest,
     GetTopicRequest,
-    GetUnfulfilledReputerNoncesRequest,
     IsReputerRegisteredInTopicIdRequest,
     NetworkInferenceBundle,
     LabeledValue,
@@ -118,12 +118,14 @@ async def worker_is_whitelisted(self) -> bool:
 
 
     async def get_unfulfilled_nonces(self) -> set[int]:
-
         # GetUnfulfilledReputerNonces gives all epochs in flight, which is not what we want here
-        # GetOpenReputerSubmissionWindows would be the more appropriate RPC call, but
-        # it doesn't seem to be implemented in the rpc client
-        # Returning [] here means we only react to EventReputerSubmissionWindowOpened
-        return set()
+        # So we use GetOpenReputerSubmissionWindows instead
+        resp = await self.client.emissions.query.get_open_reputer_submission_windows(
+            GetOpenReputerSubmissionWindowsRequest(topic_id=self.topic_id)
+        )
+        if resp.nonces is None:
+            return set[int]()
+        return {x.reputer_nonce.block_height for x in resp.nonces.nonces}
 
 
     async def submit(self, nonce: int, account_seq: int) -> WorkerResult[InputValueBundle] | TxError | Exception:
diff --git a/src/allora_sdk/worker/worker.py b/src/allora_sdk/worker/worker.py
index 972401d..a64d83b 100644
--- a/src/allora_sdk/worker/worker.py
+++ b/src/allora_sdk/worker/worker.py
@@ -745,7 +745,12 @@ async def _maybe_submit_impl(self, ctx: Context, nonce: Optional[int] = None):
             self.stop()
             return
 
-        nonces = await self.use_case.get_unfulfilled_nonces()
+        # catch errors so that `nonce` is still processed if query fails
+        try:
+            nonces = await self.use_case.get_unfulfilled_nonces()
+        except Exception as err:
+            logger.warning(f"   Failed querying unfulfilled nonces for topic {self.topic_id}: {err}")
+            nonces = set()
         new_nonces = { n for n in nonces if n not in self.submitted_nonces }
 
         if nonce is not None and nonce not in self.submitted_nonces:
diff --git a/tests/test_reputer_submit.py b/tests/test_reputer_submit.py
index 1d74b6d..c9c19ce 100644
--- a/tests/test_reputer_submit.py
+++ b/tests/test_reputer_submit.py
@@ -97,9 +97,9 @@ async def test_submit_returns_error_when_network_inferences_missing() -> None:
 
 
 @pytest.mark.asyncio
-async def test_get_unfulfilled_nonces_uses_reputer_request_nonces() -> None:
+async def test_get_unfulfilled_nonces_uses_open_submission_windows() -> None:
     client = _make_client()
-    client.emissions.query.get_unfulfilled_reputer_nonces = AsyncMock(
+    client.emissions.query.get_open_reputer_submission_windows = AsyncMock(
         return_value=Mock(
             nonces=Mock(
                 nonces=[
@@ -112,4 +112,16 @@ async def test_get_unfulfilled_nonces_uses_reputer_request_nonces() -> None:
 
     reputer = _make_reputer(client)
 
+    assert await reputer.get_unfulfilled_nonces() == {101, 202}
+
+
+@pytest.mark.asyncio
+async def test_get_unfulfilled_nonces_empty_when_no_windows_open() -> None:
+    client = _make_client()
+    client.emissions.query.get_open_reputer_submission_windows = AsyncMock(
+        return_value=Mock(nonces=None)
+    )
+
+    reputer = _make_reputer(client)
+
     assert await reputer.get_unfulfilled_nonces() == set()