diff --git a/test_libs/pyspec/eth2spec/test/helpers/deposits.py b/test_libs/pyspec/eth2spec/test/helpers/deposits.py
index fdab01ca9..125a9e73c 100644
--- a/test_libs/pyspec/eth2spec/test/helpers/deposits.py
+++ b/test_libs/pyspec/eth2spec/test/helpers/deposits.py
@@ -49,6 +49,11 @@ def build_deposit(spec,
     deposit_data = build_deposit_data(spec, pubkey, privkey, amount, withdrawal_credentials, state=state, signed=signed)
     index = len(deposit_data_list)
     deposit_data_list.append(deposit_data)
+    return deposit_from_context(spec, deposit_data_list, index)
+
+
+def deposit_from_context(spec, deposit_data_list, index):
+    deposit_data = deposit_data_list[index]
     root = hash_tree_root(List[spec.DepositData, 2**spec.DEPOSIT_CONTRACT_TREE_DEPTH](*deposit_data_list))
     tree = calc_merkle_tree_from_leaves(tuple([d.hash_tree_root() for d in deposit_data_list]))
     proof = list(get_merkle_proof(tree, item_index=index, tree_len=32)) + [(index + 1).to_bytes(32, 'little')]
diff --git a/test_libs/pyspec/eth2spec/test/phase_0/block_processing/test_process_deposit.py b/test_libs/pyspec/eth2spec/test/phase_0/block_processing/test_process_deposit.py
index 1cef99394..71d23dcba 100644
--- a/test_libs/pyspec/eth2spec/test/phase_0/block_processing/test_process_deposit.py
+++ b/test_libs/pyspec/eth2spec/test/phase_0/block_processing/test_process_deposit.py
@@ -3,9 +3,10 @@ from eth2spec.test.helpers.deposits import (
     build_deposit,
     prepare_state_and_deposit,
     sign_deposit_data,
-)
+    deposit_from_context)
 from eth2spec.test.helpers.state import get_balance
 from eth2spec.test.helpers.keys import privkeys, pubkeys
+from eth2spec.utils.bls import bls_sign
 
 
 def run_deposit_processing(spec, state, deposit, validator_index, valid=True, effective=True):
@@ -93,6 +94,35 @@ def test_new_deposit_over_max(spec, state):
     yield from run_deposit_processing(spec, state, deposit, validator_index)
 
 
+@with_all_phases
+@spec_state_test
+@always_bls
+def test_invalid_sig_other_version(spec, state):
+    validator_index = len(state.validators)
+    amount = spec.MAX_EFFECTIVE_BALANCE
+
+    pubkey = pubkeys[validator_index]
+    privkey = privkeys[validator_index]
+    withdrawal_credentials = spec.BLS_WITHDRAWAL_PREFIX + spec.hash(pubkey)[1:]
+
+    deposit_data = spec.DepositData(
+        pubkey=pubkey, withdrawal_credentials=withdrawal_credentials, amount=amount,
+        signature=bls_sign(
+            message_hash=spec.hash_tree_root(
+                spec.DepositMessage(pubkey=pubkey, withdrawal_credentials=withdrawal_credentials, amount=amount)),
+            privkey=privkey,
+            domain=spec.compute_domain(domain_type=spec.DOMAIN_DEPOSIT, fork_version=spec.Version('0xaabbccdd')),
+        )
+    )
+    deposit, root, _ = deposit_from_context(spec, [deposit_data], 0)
+
+    state.eth1_deposit_index = 0
+    state.eth1_data.deposit_root = root
+    state.eth1_data.deposit_count = 1
+
+    yield from run_deposit_processing(spec, state, deposit, validator_index, valid=True, effective=False)
+
+
 @with_all_phases
 @spec_state_test
 @always_bls