diff --git a/ape_alchemy/provider.py b/ape_alchemy/provider.py
index 56f771d..40f1d6b 100644
--- a/ape_alchemy/provider.py
+++ b/ape_alchemy/provider.py
@@ -80,8 +80,12 @@ def connection_str(self) -> str:
     def connect(self):
         self._web3 = Web3(HTTPProvider(self.uri))
         try:
-            # optimism:mainnet, optimism:goerli, polygon:mainnet, or polygon:mumbai
-            if self._web3.eth.chain_id in (10, 420, 137, 80001):
+            # Any chain that *began* as PoA needs the middleware for pre-merge blocks
+            ethereum_goerli = 5
+            optimism = (10, 420)
+            polygon = (137, 80001)
+
+            if self._web3.eth.chain_id in (ethereum_goerli, *optimism, *polygon):
                 self._web3.middleware_onion.inject(geth_poa_middleware, layer=0)
 
             self._web3.eth.set_gas_price_strategy(rpc_gas_price_strategy)
diff --git a/tests/test_integration.py b/tests/test_integration.py
index 58d43e7..d3867f3 100644
--- a/tests/test_integration.py
+++ b/tests/test_integration.py
@@ -24,4 +24,4 @@ def test_alchemy(ecosystem, network):
     with network_cls.use_provider("alchemy") as provider:
         assert isinstance(provider, Alchemy)
         assert provider.get_balance(ZERO_ADDRESS) > 0
-        assert provider.get_block("latest")
+        assert provider.get_block(0)