diff --git a/Cargo.toml b/Cargo.toml
index c7fee36..da91cd7 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -8,7 +8,7 @@ authors = ["Parity Technologies <admin@parity.io>"]
 build = "build.rs"
 
 [dependencies]
-ethereum-types = "0.2"
+ethereum-types = "0.3"
 tiny-keccak = "1.3"
 
 [build-dependencies]
diff --git a/src/lib.rs b/src/lib.rs
index 0982c11..d003965 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -105,6 +105,6 @@ mod tests {
 		let hash = keccak_buffer(&mut file).unwrap();
 
 		// then
-		assert_eq!(format!("{:?}", hash), "68371d7e884c168ae2022c82bd837d51837718a7f7dfb7aa3f753074a35e1d87");
+		assert_eq!(format!("{:x}", hash), "68371d7e884c168ae2022c82bd837d51837718a7f7dfb7aa3f753074a35e1d87");
 	}
 }