diff --git a/requirements.txt b/requirements.txt
index 5c779c374..5e5c0f05e 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -32,5 +32,5 @@ psycogreen==1.0.2
 psycopg2==2.9.6
 redis==4.5.5
 requests==2.31.0
-safe-eth-py[django]==5.5.0
+safe-eth-py[django]==5.6.0
 web3==6.5.0
diff --git a/safe_transaction_service/__init__.py b/safe_transaction_service/__init__.py
index 4b55ef95d..cfb96d473 100644
--- a/safe_transaction_service/__init__.py
+++ b/safe_transaction_service/__init__.py
@@ -1,4 +1,4 @@
-__version__ = "4.21.3"
+__version__ = "4.22.0"
 __version_info__ = tuple(
     int(num) if num.isdigit() else num
     for num in __version__.replace("-", ".", 1).split(".")
diff --git a/safe_transaction_service/history/helpers.py b/safe_transaction_service/history/helpers.py
index 770f8b1ae..a17097227 100644
--- a/safe_transaction_service/history/helpers.py
+++ b/safe_transaction_service/history/helpers.py
@@ -62,7 +62,7 @@ def is_valid_unique_transfer_id(unique_transfer_id: str) -> bool:
     :return: ``True`` for a valid ``unique_transfer_id``, ``False`` otherwise
     """
     token_transfer_id_pattern = r"^(e)([a-fA-F0-9]{64})(\d+)"
-    internal_transfer_id_pattern = r"^(i)([a-fA-F0-9]{64})(\d+)(,\d+)*"
+    internal_transfer_id_pattern = r"^(i)([a-fA-F0-9]{64})(\d*)(,\d+)*"
 
     return bool(
         re.fullmatch(token_transfer_id_pattern, unique_transfer_id)
diff --git a/safe_transaction_service/history/tests/test_views.py b/safe_transaction_service/history/tests/test_views.py
index 45c4c8f2f..b245ac7d2 100644
--- a/safe_transaction_service/history/tests/test_views.py
+++ b/safe_transaction_service/history/tests/test_views.py
@@ -2559,16 +2559,6 @@ def test_get_transfer_view(self):
         )
         self.assertEqual(response.status_code, status.HTTP_400_BAD_REQUEST)
 
-        # test internal_tx transfer_id empty trace_address
-        transfer_id = (
-            "ief060441f0101ab83d62066b962f97e3a582686e0720157407c965c5946c2f7a"
-        )
-        response = self.client.get(
-            reverse("v1:history:transfer", args=(transfer_id,)),
-            format="json",
-        )
-        self.assertEqual(response.status_code, status.HTTP_400_BAD_REQUEST)
-
         # test invalid erc20 transfer_id empty log_index
         transfer_id = (
             "e27e15ba8dea473d98c80a6b45d372c0f3c6f8c184177044c935c37eb419d7216"
@@ -2633,6 +2623,39 @@ def test_get_transfer_view(self):
         }
         self.assertEqual(response.json(), expected_result)
 
+        # test internal_tx transfer_id empty trace_address
+        ethereum_tx_hash = (
+            "0x12bafc5ee165d825201a24418e00bef6039bb06f6d09420ab1c5f7b4098c0809"
+        )
+        ethereum_tx = EthereumTxFactory(tx_hash=ethereum_tx_hash)
+        internal_tx_empty_trace_address = InternalTxFactory(
+            ethereum_tx=ethereum_tx, to=safe_address, trace_address=""
+        )
+        transfer_id_empty_trace_address = (
+            "i12bafc5ee165d825201a24418e00bef6039bb06f6d09420ab1c5f7b4098c0809"
+        )
+        response = self.client.get(
+            reverse("v1:history:transfer", args=(transfer_id_empty_trace_address,)),
+            format="json",
+        )
+        self.assertEqual(response.status_code, status.HTTP_200_OK)
+        expected_result = {
+            "type": TransferType.ETHER_TRANSFER.name,
+            "executionDate": internal_tx_empty_trace_address.ethereum_tx.block.timestamp.isoformat().replace(
+                "+00:00", "Z"
+            ),
+            "blockNumber": internal_tx_empty_trace_address.ethereum_tx.block_id,
+            "transferId": transfer_id_empty_trace_address,
+            "transactionHash": internal_tx_empty_trace_address.ethereum_tx_id,
+            "to": safe_address,
+            "value": str(internal_tx_empty_trace_address.value),
+            "tokenId": None,
+            "tokenAddress": None,
+            "from": internal_tx_empty_trace_address._from,
+            "tokenInfo": None,
+        }
+        self.assertEqual(response.json(), expected_result)
+
         # Test filtering ERC20 transfer by transfer_id
         erc20_tx_hash = (
             "0x406754000f0432d3b5e6d8341597ec3c5338239f8d311de9061fbc959f443d59"