diff --git a/Cargo.toml b/Cargo.toml
index 3702ec50..f6c40001 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -174,3 +174,13 @@ required-features = ["yubi"]
 name = "paginated_logs"
 path = "examples/paginated_logs.rs"
 required-features = ["rustls"]
+
+[[example]]
+name = "subscribe_contract_events"
+path = "examples/subscribe_contract_events.rs"
+required-features = ["rustls", "ws"]
+
+[[example]]
+name = "subscribe_contract_events_with_meta"
+path = "examples/subscribe_contract_events_with_meta.rs"
+required-features = ["rustls", "ws"]
diff --git a/ethers-contract/src/multicall/mod.rs b/ethers-contract/src/multicall/mod.rs
index a8d05145..80f76c8c 100644
--- a/ethers-contract/src/multicall/mod.rs
+++ b/ethers-contract/src/multicall/mod.rs
@@ -28,7 +28,7 @@ pub const MULTICALL_ADDRESS: Address = H160([
 ]);
 
 /// The chain IDs that [`MULTICALL_ADDRESS`] has been deployed to.
-/// Taken from: https://github.com/mds1/multicall#multicall3-contract-addresses
+/// Taken from: <https://github.com/mds1/multicall#multicall3-contract-addresses>
 pub static MULTICALL_SUPPORTED_CHAIN_IDS: Lazy<[U256; 48]> = Lazy::new(|| {
     use Chain::*;
     [
@@ -42,7 +42,7 @@ pub static MULTICALL_SUPPORTED_CHAIN_IDS: Lazy<[U256; 48]> = Lazy::new(|| {
         U256::from(OptimismGoerli),           // OptimismGoerli
         U256::from(OptimismKovan),            // OptimismKovan
         U256::from(Arbitrum),                 // Arbitrum
-        U256::from(421613),                   // ArbitrumGoerli,
+        U256::from(ArbitrumGoerli),           // ArbitrumGoerli,
         U256::from(ArbitrumTestnet),          // Arbitrum Rinkeby
         U256::from(Polygon),                  // Polygon
         U256::from(PolygonMumbai),            // PolygonMumbai
diff --git a/ethers-core/src/types/mod.rs b/ethers-core/src/types/mod.rs
index 3c2aff0e..335f8540 100644
--- a/ethers-core/src/types/mod.rs
+++ b/ethers-core/src/types/mod.rs
@@ -6,7 +6,7 @@ pub type Selector = [u8; 4];
 pub use ethabi::ethereum_types::H256 as TxHash;
 
 pub use ethabi::ethereum_types::{
-    Address, BigEndianHash, Bloom, H128, H160, H256, H32, H512, H64, U128, U256, U64, U512,
+    Address, BigEndianHash, Bloom, H128, H160, H256, H32, H512, H64, U128, U256, U512, U64,
 };
 
 pub mod transaction;
diff --git a/ethers-core/src/utils/mod.rs b/ethers-core/src/utils/mod.rs
index 9aaefc43..1a0b0c1b 100644
--- a/ethers-core/src/utils/mod.rs
+++ b/ethers-core/src/utils/mod.rs
@@ -156,7 +156,7 @@ where
     K: TryInto<Units, Error = ConversionError> + Copy,
 {
     let exponent: u32 = units.try_into()?.as_num();
-    let mut amount_str = amount.to_string().replace("_", "");
+    let mut amount_str = amount.to_string().replace('_', "");
     let dec_len = if let Some(di) = amount_str.find('.') {
         amount_str.remove(di);
         amount_str[di..].len() as u32
diff --git a/ethers-middleware/tests/signer.rs b/ethers-middleware/tests/signer.rs
index df00babe..efa35ad8 100644
--- a/ethers-middleware/tests/signer.rs
+++ b/ethers-middleware/tests/signer.rs
@@ -147,18 +147,22 @@ async fn typed_txs() {
         assert_eq!(tx.transaction_type, Some(expected.into()));
     }
 
-    let mut nonce = provider.get_transaction_count(address, None).await.unwrap();
-    let tx = TransactionRequest::new().from(address).to(address).nonce(nonce);
-    nonce += 1.into();
-    let tx1 =
-        provider.send_transaction(tx.clone(), Some(BlockNumber::Pending.into())).await.unwrap();
+    let nonce = provider.get_transaction_count(address, None).await.unwrap();
+    let bn = Some(BlockNumber::Pending.into());
+    let gas_price = provider.get_gas_price().await.unwrap() * 125 / 100;
 
-    let tx = tx.clone().nonce(nonce).from(address).to(address).with_access_list(vec![]);
-    nonce += 1.into();
-    let tx2 = provider.send_transaction(tx, Some(BlockNumber::Pending.into())).await.unwrap();
+    let tx = TransactionRequest::new().from(address).to(address).nonce(nonce).gas_price(gas_price);
+    let tx1 = provider.send_transaction(tx.clone(), bn).await.unwrap();
 
-    let tx = Eip1559TransactionRequest::new().from(address).to(address).nonce(nonce);
-    let tx3 = provider.send_transaction(tx, Some(BlockNumber::Pending.into())).await.unwrap();
+    let tx = tx.clone().from(address).to(address).nonce(nonce + 1).with_access_list(vec![]);
+    let tx2 = provider.send_transaction(tx, bn).await.unwrap();
+
+    let tx = Eip1559TransactionRequest::new()
+        .from(address)
+        .to(address)
+        .nonce(nonce + 2)
+        .max_fee_per_gas(gas_price);
+    let tx3 = provider.send_transaction(tx, bn).await.unwrap();
 
     futures_util::join!(check_tx(tx1, 0), check_tx(tx2, 1), check_tx(tx3, 2),);
 }
diff --git a/scripts/examples.sh b/scripts/examples.sh
index 594d639e..ee50628e 100755
--- a/scripts/examples.sh
+++ b/scripts/examples.sh
@@ -10,7 +10,7 @@ ignored=(
   "subscribe_logs"
   "trezor"
   "yubi"
-  "remove_liquidty"
+  "remove_liquidity"
 )
 
 # run all examples
@@ -21,5 +21,5 @@ for file in examples/*.rs; do
     continue
   fi
   echo "running: $file"
-  cargo r -p ethers --example "$(basename "$name")" --features "ethers-solc"
+  cargo r -p ethers --example "$(basename "$name")" --features "ethers-solc rustls ws"
 done