diff --git a/Cargo.toml b/Cargo.toml
index 2a2134771..7b0a5fea0 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,4 +1,15 @@
+[workspace]
+members = [
+	"interpreter",
+	"jsontests",
+	"precompile",
+	"tracer",
+]
+resolver = "2"
+
 [workspace.package]
+edition = "2021"
+rust-version = "1.60.0"
 license = "Apache-2.0"
 authors = ["rust-evm Developers <contact-rust-evm@pacna.org>"]
 repository = "https://github.com/rust-ethereum/evm"
@@ -7,7 +18,8 @@ keywords = ["no_std", "ethereum", "evm"]
 [package]
 name = "evm"
 version = "1.0.0-dev"
-edition = "2021"
+edition = { workspace = true }
+rust-version = { workspace = true }
 license = { workspace = true }
 authors = { workspace = true }
 repository = { workspace = true }
@@ -27,20 +39,12 @@ std = [
 	"sha3/std",
 	"evm-interpreter/std",
 ]
-with-codec = [
+scale = [
 	"primitive-types/codec",
 	"primitive-types/scale-info",
-	"evm-interpreter/with-codec",
+	"evm-interpreter/scale",
 ]
-with-serde = [
+serde = [
 	"primitive-types/impl-serde",
-	"evm-interpreter/with-serde",
-]
-
-[workspace]
-members = [
-	"interpreter",
-	"jsontests",
-	"precompile",
-	"tracer",
+	"evm-interpreter/serde",
 ]
diff --git a/interpreter/Cargo.toml b/interpreter/Cargo.toml
index a4583ffb9..e23509501 100644
--- a/interpreter/Cargo.toml
+++ b/interpreter/Cargo.toml
@@ -1,7 +1,8 @@
 [package]
 name = "evm-interpreter"
 version = "1.0.0-dev"
-edition = "2021"
+edition = { workspace = true }
+rust-version = { workspace = true }
 license = { workspace = true }
 authors = { workspace = true }
 repository = { workspace = true }
@@ -9,8 +10,8 @@ keywords = { workspace = true }
 description = "The interpreter part of Ethereum Virtual Machine"
 
 [dependencies]
-auto_impl = "1.1"
-paste = "1.0.15"
+auto_impl = "1.2"
+paste = "1.0"
 primitive-types = { version = "0.12", default-features = false, features = ["rlp"] }
 rlp = { version = "0.5", default-features = false }
 scale-codec = { package = "parity-scale-codec", version = "3.2", default-features = false, features = ["derive", "full"], optional = true }
@@ -26,17 +27,17 @@ default = ["std"]
 std = [
 	"primitive-types/std",
 	"rlp/std",
-	"serde/std",
 	"scale-codec/std",
 	"scale-info/std",
+	"serde/std",
 	"sha3/std",
 ]
-with-codec = [
+scale = [
 	"scale-codec",
 	"scale-info",
 	"primitive-types/impl-codec",
 ]
-with-serde = [
-	"serde",
+serde = [
+	"dep:serde",
 	"primitive-types/impl-serde",
 ]
diff --git a/interpreter/src/error.rs b/interpreter/src/error.rs
index 69c1d5ff7..aaf74fbcb 100644
--- a/interpreter/src/error.rs
+++ b/interpreter/src/error.rs
@@ -33,10 +33,10 @@ pub type ExitResult = Result<ExitSucceed, ExitError>;
 /// Exit reason.
 #[derive(Clone, Debug, Eq, PartialEq)]
 #[cfg_attr(
-	feature = "with-codec",
+	feature = "scale",
 	derive(scale_codec::Encode, scale_codec::Decode, scale_info::TypeInfo)
 )]
-#[cfg_attr(feature = "with-serde", derive(serde::Serialize, serde::Deserialize))]
+#[cfg_attr(feature = "serde", derive(serde::Serialize, serde::Deserialize))]
 pub enum ExitError {
 	/// Machine returns a normal EVM error.
 	Exception(ExitException),
@@ -74,10 +74,10 @@ impl std::fmt::Display for ExitError {
 /// Exit succeed reason.
 #[derive(Clone, Copy, Debug, Eq, PartialEq)]
 #[cfg_attr(
-	feature = "with-codec",
+	feature = "scale",
 	derive(scale_codec::Encode, scale_codec::Decode, scale_info::TypeInfo)
 )]
-#[cfg_attr(feature = "with-serde", derive(serde::Serialize, serde::Deserialize))]
+#[cfg_attr(feature = "serde", derive(serde::Serialize, serde::Deserialize))]
 pub enum ExitSucceed {
 	/// Machine encountered an explicit stop.
 	Stopped,
@@ -96,67 +96,67 @@ impl From<ExitSucceed> for ExitResult {
 /// Exit error reason.
 #[derive(Clone, Debug, Eq, PartialEq)]
 #[cfg_attr(
-	feature = "with-codec",
+	feature = "scale",
 	derive(scale_codec::Encode, scale_codec::Decode, scale_info::TypeInfo)
 )]
-#[cfg_attr(feature = "with-serde", derive(serde::Serialize, serde::Deserialize))]
+#[cfg_attr(feature = "serde", derive(serde::Serialize, serde::Deserialize))]
 pub enum ExitException {
 	/// Trying to pop from an empty stack.
-	#[cfg_attr(feature = "with-codec", codec(index = 0))]
+	#[cfg_attr(feature = "scale", codec(index = 0))]
 	StackUnderflow,
 	/// Trying to push into a stack over stack limit.
-	#[cfg_attr(feature = "with-codec", codec(index = 1))]
+	#[cfg_attr(feature = "scale", codec(index = 1))]
 	StackOverflow,
 	/// Jump destination is invalid.
-	#[cfg_attr(feature = "with-codec", codec(index = 2))]
+	#[cfg_attr(feature = "scale", codec(index = 2))]
 	InvalidJump,
 	/// An opcode accesses memory region, but the region is invalid.
-	#[cfg_attr(feature = "with-codec", codec(index = 3))]
+	#[cfg_attr(feature = "scale", codec(index = 3))]
 	InvalidRange,
 	/// Encountered the designated invalid opcode.
-	#[cfg_attr(feature = "with-codec", codec(index = 4))]
+	#[cfg_attr(feature = "scale", codec(index = 4))]
 	DesignatedInvalid,
 	/// Call stack is too deep (runtime).
-	#[cfg_attr(feature = "with-codec", codec(index = 5))]
+	#[cfg_attr(feature = "scale", codec(index = 5))]
 	CallTooDeep,
 	/// Create opcode encountered collision (runtime).
-	#[cfg_attr(feature = "with-codec", codec(index = 6))]
+	#[cfg_attr(feature = "scale", codec(index = 6))]
 	CreateCollision,
 	/// Create init code exceeds limit (runtime).
-	#[cfg_attr(feature = "with-codec", codec(index = 7))]
+	#[cfg_attr(feature = "scale", codec(index = 7))]
 	CreateContractLimit,
 
 	/// Invalid opcode during execution or starting byte is 0xef ([EIP-3541](https://github.com/ethereum/EIPs/blob/master/EIPS/eip-3541.md)).
-	#[cfg_attr(feature = "with-codec", codec(index = 15))]
+	#[cfg_attr(feature = "scale", codec(index = 15))]
 	InvalidOpcode(Opcode),
 
 	/// An opcode accesses external information, but the request is off offset
 	/// limit (runtime).
-	#[cfg_attr(feature = "with-codec", codec(index = 8))]
+	#[cfg_attr(feature = "scale", codec(index = 8))]
 	OutOfOffset,
 	/// Execution runs out of gas (runtime).
-	#[cfg_attr(feature = "with-codec", codec(index = 9))]
+	#[cfg_attr(feature = "scale", codec(index = 9))]
 	OutOfGas,
 	/// Not enough fund to start the execution (runtime).
-	#[cfg_attr(feature = "with-codec", codec(index = 10))]
+	#[cfg_attr(feature = "scale", codec(index = 10))]
 	OutOfFund,
 
 	/// PC underflowed (unused).
 	#[allow(clippy::upper_case_acronyms)]
-	#[cfg_attr(feature = "with-codec", codec(index = 11))]
+	#[cfg_attr(feature = "scale", codec(index = 11))]
 	PCUnderflow,
 
 	/// Attempt to create an empty account (runtime, unused).
-	#[cfg_attr(feature = "with-codec", codec(index = 12))]
+	#[cfg_attr(feature = "scale", codec(index = 12))]
 	CreateEmpty,
 
 	/// Nonce reached maximum value of 2^64-1
 	/// https://eips.ethereum.org/EIPS/eip-2681
-	#[cfg_attr(feature = "with-codec", codec(index = 14))]
+	#[cfg_attr(feature = "scale", codec(index = 14))]
 	MaxNonce,
 
 	/// Other normal errors.
-	#[cfg_attr(feature = "with-codec", codec(index = 13))]
+	#[cfg_attr(feature = "scale", codec(index = 13))]
 	Other(Cow<'static, str>),
 }
 
@@ -175,10 +175,10 @@ impl From<ExitException> for ExitError {
 /// Exit fatal reason.
 #[derive(Clone, Debug, Eq, PartialEq)]
 #[cfg_attr(
-	feature = "with-codec",
+	feature = "scale",
 	derive(scale_codec::Encode, scale_codec::Decode, scale_info::TypeInfo)
 )]
-#[cfg_attr(feature = "with-serde", derive(serde::Serialize, serde::Deserialize))]
+#[cfg_attr(feature = "serde", derive(serde::Serialize, serde::Deserialize))]
 pub enum ExitFatal {
 	/// The operation is not supported.
 	NotSupported,
diff --git a/interpreter/src/opcode.rs b/interpreter/src/opcode.rs
index b4d0a4746..25b668d2b 100644
--- a/interpreter/src/opcode.rs
+++ b/interpreter/src/opcode.rs
@@ -1,10 +1,10 @@
 /// Opcode enum. One-to-one corresponding to an `u8` value.
 #[derive(Clone, Copy, Debug, Eq, PartialEq)]
 #[cfg_attr(
-	feature = "with-codec",
+	feature = "scale",
 	derive(scale_codec::Encode, scale_codec::Decode, scale_info::TypeInfo)
 )]
-#[cfg_attr(feature = "with-serde", derive(serde::Serialize, serde::Deserialize))]
+#[cfg_attr(feature = "serde", derive(serde::Serialize, serde::Deserialize))]
 pub struct Opcode(pub u8);
 
 // Core opcodes.
diff --git a/jsontests/Cargo.toml b/jsontests/Cargo.toml
index 95c902f90..7cd6f5aa8 100644
--- a/jsontests/Cargo.toml
+++ b/jsontests/Cargo.toml
@@ -1,7 +1,8 @@
 [package]
 name = "jsontests"
 version = "0.0.0-dev"
-edition = "2021"
+edition = { workspace = true }
+rust-version = { workspace = true }
 license = { workspace = true }
 authors = { workspace = true }
 repository = { workspace = true }
diff --git a/precompile/Cargo.toml b/precompile/Cargo.toml
index f412a35b1..eac21091e 100644
--- a/precompile/Cargo.toml
+++ b/precompile/Cargo.toml
@@ -1,8 +1,8 @@
 [package]
 name = "evm-precompile"
 version = "0.0.0-dev"
-edition = "2021"
-license = { workspace = true }
+edition = { workspace = true }
+rust-version = "1.65.0"
 authors = { workspace = true }
 repository = { workspace = true }
 keywords = { workspace = true }
diff --git a/tracer/Cargo.toml b/tracer/Cargo.toml
index a5c1ddb87..c56c01150 100644
--- a/tracer/Cargo.toml
+++ b/tracer/Cargo.toml
@@ -1,7 +1,8 @@
 [package]
 name = "evm-tracer"
 version = "0.0.0-dev"
-edition = "2021"
+edition = { workspace = true }
+rust-version = { workspace = true }
 license = { workspace = true }
 authors = { workspace = true }
 repository = { workspace = true }