diff --git a/Cargo.lock b/Cargo.lock
index b248953eb93ca55528f03fc894509cd340258ad5..2956f668b890196025e63867a8fc7fffa0cb14bf 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -494,14 +494,14 @@ dependencies = [
  "nom",
  "nom-supreme",
  "pallet-contracts-primitives",
- "parity-scale-codec",
+ "parity-scale-codec 2.3.1",
  "parity-wasm",
  "platforms 2.0.0",
  "predicates",
  "pretty_assertions",
  "regex",
  "rustc_version",
- "scale-info",
+ "scale-info 2.0.0",
  "semver",
  "serde",
  "serde_json",
@@ -1118,8 +1118,8 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "37ed5e5c346de62ca5c184b4325a6600d1eaca210666e4606fe4e449574978d0"
 dependencies = [
  "cfg-if",
- "parity-scale-codec",
- "scale-info",
+ "parity-scale-codec 2.3.1",
+ "scale-info 1.0.0",
  "serde",
 ]
 
@@ -1478,7 +1478,7 @@ version = "0.5.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "161ebdfec3c8e3b52bf61c4f3550a1eea4f9579d10dc1b936f3171ebdcd6c443"
 dependencies = [
- "parity-scale-codec",
+ "parity-scale-codec 2.3.1",
 ]
 
 [[package]]
@@ -1541,11 +1541,11 @@ dependencies = [
  "ink_prelude",
  "ink_primitives",
  "num-traits",
- "parity-scale-codec",
+ "parity-scale-codec 2.3.1",
  "paste",
  "rand 0.8.4",
  "rlibc",
- "scale-info",
+ "scale-info 1.0.0",
  "secp256k1",
  "sha2 0.10.1",
  "sha3",
@@ -1576,7 +1576,7 @@ dependencies = [
  "ink_prelude",
  "ink_primitives",
  "ink_storage",
- "parity-scale-codec",
+ "parity-scale-codec 2.3.1",
 ]
 
 [[package]]
@@ -1592,7 +1592,7 @@ dependencies = [
  "impl-serde",
  "ink_lang_ir",
  "itertools",
- "parity-scale-codec",
+ "parity-scale-codec 2.3.1",
  "proc-macro2",
  "quote",
  "syn",
@@ -1621,7 +1621,7 @@ dependencies = [
  "ink_lang_codegen",
  "ink_lang_ir",
  "ink_primitives",
- "parity-scale-codec",
+ "parity-scale-codec 2.3.1",
  "proc-macro2",
  "syn",
 ]
@@ -1636,7 +1636,7 @@ dependencies = [
  "impl-serde",
  "ink_prelude",
  "ink_primitives",
- "scale-info",
+ "scale-info 1.0.0",
  "serde",
 ]
 
@@ -1657,8 +1657,8 @@ checksum = "6303fbbe30b4c6bbe01ff36cce29e37961095574260d5958017ce9346834c77e"
 dependencies = [
  "cfg-if",
  "ink_prelude",
- "parity-scale-codec",
- "scale-info",
+ "parity-scale-codec 2.3.1",
+ "scale-info 1.0.0",
 ]
 
 [[package]]
@@ -1676,8 +1676,8 @@ dependencies = [
  "ink_prelude",
  "ink_primitives",
  "ink_storage_derive",
- "parity-scale-codec",
- "scale-info",
+ "parity-scale-codec 2.3.1",
+ "scale-info 1.0.0",
 ]
 
 [[package]]
@@ -2233,8 +2233,8 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "e22d9d2bb8e33ca590237fa5ffa9363236bb49498b6c7498a68f560d897f9095"
 dependencies = [
  "bitflags",
- "parity-scale-codec",
- "scale-info",
+ "parity-scale-codec 2.3.1",
+ "scale-info 1.0.0",
  "serde",
  "sp-core 5.0.0",
  "sp-rpc",
@@ -2252,10 +2252,22 @@ dependencies = [
  "bitvec",
  "byte-slice-cast",
  "impl-trait-for-tuples",
- "parity-scale-codec-derive",
+ "parity-scale-codec-derive 2.3.1",
  "serde",
 ]
 
+[[package]]
+name = "parity-scale-codec"
+version = "3.0.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "2a7f3fcf5e45fc28b84dcdab6b983e77f197ec01f325a33f404ba6855afd1070"
+dependencies = [
+ "arrayvec 0.7.2",
+ "byte-slice-cast",
+ "impl-trait-for-tuples",
+ "parity-scale-codec-derive 3.0.0",
+]
+
 [[package]]
 name = "parity-scale-codec-derive"
 version = "2.3.1"
@@ -2268,6 +2280,18 @@ dependencies = [
  "syn",
 ]
 
+[[package]]
+name = "parity-scale-codec-derive"
+version = "3.0.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "2c6e626dc84025ff56bf1476ed0e30d10c84d7f89a475ef46ebabee1095a8fba"
+dependencies = [
+ "proc-macro-crate 1.1.0",
+ "proc-macro2",
+ "quote",
+ "syn",
+]
+
 [[package]]
 name = "parity-util-mem"
 version = "0.10.2"
@@ -2503,7 +2527,7 @@ dependencies = [
  "fixed-hash",
  "impl-codec",
  "impl-serde",
- "scale-info",
+ "scale-info 1.0.0",
  "uint",
 ]
 
@@ -2865,11 +2889,23 @@ dependencies = [
  "bitvec",
  "cfg-if",
  "derive_more",
- "parity-scale-codec",
- "scale-info-derive",
+ "parity-scale-codec 2.3.1",
+ "scale-info-derive 1.0.0",
  "serde",
 ]
 
+[[package]]
+name = "scale-info"
+version = "2.0.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "7d3b4d0b178e3af536f7988303bc73a0766c816de2138c08262015f8ec7be568"
+dependencies = [
+ "cfg-if",
+ "derive_more",
+ "parity-scale-codec 3.0.0",
+ "scale-info-derive 2.0.0",
+]
+
 [[package]]
 name = "scale-info-derive"
 version = "1.0.0"
@@ -2882,6 +2918,18 @@ dependencies = [
  "syn",
 ]
 
+[[package]]
+name = "scale-info-derive"
+version = "2.0.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b7805950c36512db9e3251c970bb7ac425f326716941862205d612ab3b5e46e2"
+dependencies = [
+ "proc-macro-crate 1.1.0",
+ "proc-macro2",
+ "quote",
+ "syn",
+]
+
 [[package]]
 name = "schannel"
 version = "0.1.19"
@@ -3143,8 +3191,8 @@ version = "4.0.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "d0a11468fbf1d08502f95a69388b16e927a872df556085b5be7e5c55cdd3022c"
 dependencies = [
- "parity-scale-codec",
- "scale-info",
+ "parity-scale-codec 2.3.1",
+ "scale-info 1.0.0",
  "serde",
  "sp-core 4.0.0",
  "sp-io 4.0.0",
@@ -3157,8 +3205,8 @@ version = "5.0.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "69c8dfffb7a15ac2c802bc9ce972b8449c8ce0a15254ae4d77a012a3a8c278d1"
 dependencies = [
- "parity-scale-codec",
- "scale-info",
+ "parity-scale-codec 2.3.1",
+ "scale-info 1.0.0",
  "serde",
  "sp-core 5.0.0",
  "sp-io 5.0.0",
@@ -3173,8 +3221,8 @@ checksum = "aa92b9707afdaa807bcb985fcc70645ebbe6fbb2442620d61dc47e7f3553a7ae"
 dependencies = [
  "integer-sqrt",
  "num-traits",
- "parity-scale-codec",
- "scale-info",
+ "parity-scale-codec 2.3.1",
+ "scale-info 1.0.0",
  "serde",
  "sp-debug-derive",
  "sp-std",
@@ -3203,13 +3251,13 @@ dependencies = [
  "log",
  "merlin",
  "num-traits",
- "parity-scale-codec",
+ "parity-scale-codec 2.3.1",
  "parity-util-mem",
  "parking_lot",
  "primitive-types",
  "rand 0.7.3",
  "regex",
- "scale-info",
+ "scale-info 1.0.0",
  "schnorrkel",
  "secrecy",
  "serde",
@@ -3252,13 +3300,13 @@ dependencies = [
  "log",
  "merlin",
  "num-traits",
- "parity-scale-codec",
+ "parity-scale-codec 2.3.1",
  "parity-util-mem",
  "parking_lot",
  "primitive-types",
  "rand 0.7.3",
  "regex",
- "scale-info",
+ "scale-info 1.0.0",
  "schnorrkel",
  "secrecy",
  "serde",
@@ -3311,7 +3359,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "54226438dbff5ced9718b51eb44b7f38fe139c40a923a088275914519bf451d3"
 dependencies = [
  "environmental",
- "parity-scale-codec",
+ "parity-scale-codec 2.3.1",
  "sp-std",
  "sp-storage 4.0.0",
 ]
@@ -3323,7 +3371,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "54f0fe949490000a97f367dc2acf4d2e7d0473ec0e13ce1775d0804bb64d3c98"
 dependencies = [
  "environmental",
- "parity-scale-codec",
+ "parity-scale-codec 2.3.1",
  "sp-std",
  "sp-storage 5.0.0",
 ]
@@ -3338,7 +3386,7 @@ dependencies = [
  "hash-db",
  "libsecp256k1",
  "log",
- "parity-scale-codec",
+ "parity-scale-codec 2.3.1",
  "parking_lot",
  "sp-core 4.0.0",
  "sp-externalities 0.10.0",
@@ -3363,7 +3411,7 @@ dependencies = [
  "hash-db",
  "libsecp256k1",
  "log",
- "parity-scale-codec",
+ "parity-scale-codec 2.3.1",
  "parking_lot",
  "sp-core 5.0.0",
  "sp-externalities 0.11.0",
@@ -3388,7 +3436,7 @@ dependencies = [
  "derive_more",
  "futures",
  "merlin",
- "parity-scale-codec",
+ "parity-scale-codec 2.3.1",
  "parking_lot",
  "schnorrkel",
  "sp-core 4.0.0",
@@ -3404,7 +3452,7 @@ dependencies = [
  "async-trait",
  "futures",
  "merlin",
- "parity-scale-codec",
+ "parity-scale-codec 2.3.1",
  "parking_lot",
  "schnorrkel",
  "sp-core 5.0.0",
@@ -3444,11 +3492,11 @@ dependencies = [
  "hash256-std-hasher",
  "impl-trait-for-tuples",
  "log",
- "parity-scale-codec",
+ "parity-scale-codec 2.3.1",
  "parity-util-mem",
  "paste",
  "rand 0.7.3",
- "scale-info",
+ "scale-info 1.0.0",
  "serde",
  "sp-application-crypto 4.0.0",
  "sp-arithmetic",
@@ -3467,11 +3515,11 @@ dependencies = [
  "hash256-std-hasher",
  "impl-trait-for-tuples",
  "log",
- "parity-scale-codec",
+ "parity-scale-codec 2.3.1",
  "parity-util-mem",
  "paste",
  "rand 0.7.3",
- "scale-info",
+ "scale-info 1.0.0",
  "serde",
  "sp-application-crypto 5.0.0",
  "sp-arithmetic",
@@ -3487,7 +3535,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "7e0176151f1195b386ddb4e07d716713e1e29f36b65c0e6e91fe354fc2cec84d"
 dependencies = [
  "impl-trait-for-tuples",
- "parity-scale-codec",
+ "parity-scale-codec 2.3.1",
  "primitive-types",
  "sp-externalities 0.10.0",
  "sp-runtime-interface-proc-macro",
@@ -3505,7 +3553,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "ab1f6625996742e3e5c0e6a6a2b5c0db363e2c52f4a71ea6cd6d963a10a4bdd6"
 dependencies = [
  "impl-trait-for-tuples",
- "parity-scale-codec",
+ "parity-scale-codec 2.3.1",
  "primitive-types",
  "sp-externalities 0.11.0",
  "sp-runtime-interface-proc-macro",
@@ -3538,7 +3586,7 @@ dependencies = [
  "hash-db",
  "log",
  "num-traits",
- "parity-scale-codec",
+ "parity-scale-codec 2.3.1",
  "parking_lot",
  "rand 0.7.3",
  "smallvec",
@@ -3562,7 +3610,7 @@ dependencies = [
  "hash-db",
  "log",
  "num-traits",
- "parity-scale-codec",
+ "parity-scale-codec 2.3.1",
  "parking_lot",
  "rand 0.7.3",
  "smallvec",
@@ -3590,7 +3638,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "851e1315a935cd5a0ce1bb6e41b0d611ac2370ede860d551f9f133007487043a"
 dependencies = [
  "impl-serde",
- "parity-scale-codec",
+ "parity-scale-codec 2.3.1",
  "ref-cast",
  "serde",
  "sp-debug-derive",
@@ -3604,7 +3652,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "838ec2a757a8e7b903684a71f649dfbd6449d91e3e5d93979fc8d2ee77d56fee"
 dependencies = [
  "impl-serde",
- "parity-scale-codec",
+ "parity-scale-codec 2.3.1",
  "ref-cast",
  "serde",
  "sp-debug-derive",
@@ -3617,7 +3665,7 @@ version = "4.0.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "a4688fceac497cee7e9b72c387fef20fa517e2bf6a3bf52a4a45dcc9391d6201"
 dependencies = [
- "parity-scale-codec",
+ "parity-scale-codec 2.3.1",
  "sp-std",
  "tracing",
  "tracing-core",
@@ -3632,8 +3680,8 @@ checksum = "feb344969de755877440fccb691860acedd565061774d289886ff9c690206cc0"
 dependencies = [
  "hash-db",
  "memory-db 0.27.0",
- "parity-scale-codec",
- "scale-info",
+ "parity-scale-codec 2.3.1",
+ "scale-info 1.0.0",
  "sp-core 4.0.0",
  "sp-std",
  "trie-db 0.22.6",
@@ -3648,8 +3696,8 @@ checksum = "8a7ad44bbb93fb9af94ea9869ec13602884f7d2360c245377aed7c6c92c6834e"
 dependencies = [
  "hash-db",
  "memory-db 0.28.0",
- "parity-scale-codec",
- "scale-info",
+ "parity-scale-codec 2.3.1",
+ "scale-info 1.0.0",
  "sp-core 5.0.0",
  "sp-std",
  "trie-db 0.23.0",
@@ -3663,9 +3711,9 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "8b57388721427e65bdfadf636eebf444a6f84f7a05b56af2e7c6928cf554c618"
 dependencies = [
  "impl-serde",
- "parity-scale-codec",
+ "parity-scale-codec 2.3.1",
  "parity-wasm",
- "scale-info",
+ "scale-info 1.0.0",
  "serde",
  "sp-runtime 4.0.0",
  "sp-std",
@@ -3679,7 +3727,7 @@ version = "4.0.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "48fcafba97053cfa9fa366e6b30fd0d0e9d15530c4a738efaa117a4d5707d147"
 dependencies = [
- "parity-scale-codec",
+ "parity-scale-codec 2.3.1",
  "proc-macro2",
  "quote",
  "syn",
@@ -3692,7 +3740,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "89a5b0fe5b5bd3259e914edc35b33b6f7b4b0c803981290256e8ed75eecf1b27"
 dependencies = [
  "impl-trait-for-tuples",
- "parity-scale-codec",
+ "parity-scale-codec 2.3.1",
  "sp-std",
  "wasmi",
 ]
@@ -3705,7 +3753,7 @@ checksum = "60951479e2f26018c4c315a6f48956b9e2a3803953517bf8930e69b9a7a159df"
 dependencies = [
  "impl-trait-for-tuples",
  "log",
- "parity-scale-codec",
+ "parity-scale-codec 2.3.1",
  "sp-std",
  "wasmi",
 ]
@@ -3816,8 +3864,8 @@ dependencies = [
  "jsonrpsee 0.8.0",
  "log",
  "num-traits",
- "parity-scale-codec",
- "scale-info",
+ "parity-scale-codec 2.3.1",
+ "scale-info 1.0.0",
  "serde",
  "serde_json",
  "sp-core 5.0.0",
@@ -3837,12 +3885,12 @@ dependencies = [
  "darling",
  "frame-metadata",
  "heck 0.3.3",
- "parity-scale-codec",
+ "parity-scale-codec 2.3.1",
  "proc-macro-crate 0.1.5",
  "proc-macro-error",
  "proc-macro2",
  "quote",
- "scale-info",
+ "scale-info 1.0.0",
  "syn",
 ]
 
@@ -3856,12 +3904,12 @@ dependencies = [
  "darling",
  "frame-metadata",
  "heck 0.3.3",
- "parity-scale-codec",
+ "parity-scale-codec 2.3.1",
  "proc-macro-crate 0.1.5",
  "proc-macro-error",
  "proc-macro2",
  "quote",
- "scale-info",
+ "scale-info 1.0.0",
  "subxt-codegen",
  "syn",
 ]
diff --git a/Cargo.toml b/Cargo.toml
index c96da845fa811ac1c12957da4757c34390be4ff8..edc5ba4c2464f9b619ab072a70aac7ab8bf96e02 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -47,7 +47,7 @@ regex = "1.5.4"
 async-std = { version = "1.10.0", features = ["attributes", "tokio1"] }
 ink_metadata = { version = "3.0.0-rc8", features = ["derive"] }
 ink_env = "3.0.0-rc8"
-scale-info = { version = "1.0.0", default-features = false, features = ["derive"] }
+scale-info = { version = "2.0.0", default-features = false, features = ["derive"] }
 sp-core = "5.0.0"
 sp-runtime = "5.0.0"
 pallet-contracts-primitives = "5.0.0"