diff --git a/ethcontract-common/Cargo.toml b/ethcontract-common/Cargo.toml
index 5c9db59d..e7037441 100644
--- a/ethcontract-common/Cargo.toml
+++ b/ethcontract-common/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "ethcontract-common"
-version = "0.11.0"
+version = "0.11.1"
 authors = ["Nicholas Rodrigues Lordello <nlordell@gmail.com>"]
 edition = "2018"
 license = "MIT OR Apache-2.0"
diff --git a/ethcontract-derive/Cargo.toml b/ethcontract-derive/Cargo.toml
index a8d025e2..f00a112a 100644
--- a/ethcontract-derive/Cargo.toml
+++ b/ethcontract-derive/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "ethcontract-derive"
-version = "0.11.0"
+version = "0.11.1"
 authors = ["Nicholas Rodrigues Lordello <nlordell@gmail.com>"]
 edition = "2018"
 license = "MIT OR Apache-2.0"
@@ -15,8 +15,8 @@ Proc macro for generating type-safe bindings to Ethereum smart contracts.
 proc-macro = true
 
 [dependencies]
-ethcontract-common = { version = "0.11.0", path = "../ethcontract-common" }
-ethcontract-generate = { version = "0.11.0", path = "../ethcontract-generate" }
+ethcontract-common = { version = "0.11.1", path = "../ethcontract-common" }
+ethcontract-generate = { version = "0.11.1", path = "../ethcontract-generate" }
 proc-macro2 = "1.0"
 quote = "1.0"
 syn = "1.0.12"
diff --git a/ethcontract-generate/Cargo.toml b/ethcontract-generate/Cargo.toml
index ac8b464e..81daaee7 100644
--- a/ethcontract-generate/Cargo.toml
+++ b/ethcontract-generate/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "ethcontract-generate"
-version = "0.11.0"
+version = "0.11.1"
 authors = ["Nicholas Rodrigues Lordello <nlordell@gmail.com>"]
 edition = "2018"
 license = "MIT OR Apache-2.0"
@@ -14,7 +14,7 @@ Code generation for type-safe bindings to Ethereum smart contracts.
 [dependencies]
 anyhow = "1.0"
 curl = "0.4"
-ethcontract-common = { version = "0.11.0", path = "../ethcontract-common" }
+ethcontract-common = { version = "0.11.1", path = "../ethcontract-common" }
 Inflector = "0.11"
 proc-macro2 = "1.0"
 quote = "1.0"
diff --git a/ethcontract-generate/src/contract/common.rs b/ethcontract-generate/src/contract/common.rs
index b43eb1dd..d878c939 100644
--- a/ethcontract-generate/src/contract/common.rs
+++ b/ethcontract-generate/src/contract/common.rs
@@ -185,7 +185,7 @@ fn expand_transaction_hash(hash: Option<TransactionHash>) -> TokenStream {
 
     let bytes = hash.as_bytes().iter().copied().map(Literal::u8_unsuffixed);
     quote! {
-        self::ethcontract::TransactionHash([#( #bytes ),*])
+        Some(self::ethcontract::TransactionHash([#( #bytes ),*]))
     }
 }
 
@@ -219,7 +219,7 @@ mod tests {
         assert_quote!(
             expand_transaction_hash(Some("000102030405060708090a0b0c0d0e0f10111213000000000000000000000000".parse().unwrap())),
             {
-                self::ethcontract::TransactionHash([0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0])
+                Some(self::ethcontract::TransactionHash([0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]))
             },
         );
     }
diff --git a/ethcontract/Cargo.toml b/ethcontract/Cargo.toml
index 566d7c7d..7fdd7a4a 100644
--- a/ethcontract/Cargo.toml
+++ b/ethcontract/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "ethcontract"
-version = "0.11.0"
+version = "0.11.1"
 authors = ["Nicholas Rodrigues Lordello <nlordell@gmail.com>"]
 edition = "2018"
 license = "MIT OR Apache-2.0"
@@ -25,8 +25,8 @@ ws-tokio = ["web3/ws-tokio"]
 ws-tls-tokio = ["web3/ws-tls-tokio"]
 
 [dependencies]
-ethcontract-common = { version = "0.11.0", path = "../ethcontract-common" }
-ethcontract-derive = { version = "0.11.0", path = "../ethcontract-derive", optional = true}
+ethcontract-common = { version = "0.11.1", path = "../ethcontract-common" }
+ethcontract-derive = { version = "0.11.1", path = "../ethcontract-derive", optional = true}
 futures = "0.3"
 futures-timer = "3.0"
 hex = "0.4"
diff --git a/examples/generate/build.rs b/examples/generate/build.rs
index eab10d96..e974aa97 100644
--- a/examples/generate/build.rs
+++ b/examples/generate/build.rs
@@ -1,10 +1,11 @@
-use ethcontract_generate::Builder;
+use ethcontract_generate::{Address, Builder, TransactionHash};
 use std::env;
 use std::path::Path;
 
 fn main() {
     let dest = env::var("OUT_DIR").unwrap();
     Builder::new("../truffle/build/contracts/RustCoin.json")
+        .add_deployment(42, Address::zero(), Some(TransactionHash::zero()))
         .generate()
         .unwrap()
         .write_to_file(Path::new(&dest).join("rust_coin.rs"))