diff --git a/Cargo.toml b/Cargo.toml
index 02959795b..cdfb89232 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -17,10 +17,10 @@ sha3 = { version = "0.8", default-features = false }
 rlp = { version = "0.5", default-features = false }
 primitive-types = { version = ">= 0.10, <= 0.11", default-features = false, features = ["rlp"] }
 serde = { version = "1.0", default-features = false, features = ["derive"], optional = true }
-codec = { package = "parity-scale-codec", version = "2.0", default-features = false, features = ["derive"], optional = true }
+codec = { package = "parity-scale-codec", version = "3.0", default-features = false, features = ["derive"], optional = true }
 ethereum = { version = ">= 0.10, <= 0.12", default-features = false }
 environmental = { version = "1.1.2", default-features = false, optional = true }
-scale-info = { version = "1.0.0", default-features = false, features = ["derive"], optional = true }
+scale-info = { version = "2.0", default-features = false, features = ["derive"], optional = true }
 auto_impl = "0.5.0"
 
 [dev-dependencies]
diff --git a/core/Cargo.toml b/core/Cargo.toml
index 8d7180a03..4136b150b 100644
--- a/core/Cargo.toml
+++ b/core/Cargo.toml
@@ -10,9 +10,9 @@ edition = "2018"
 
 [dependencies]
 primitive-types = { version = ">= 0.10, <= 0.11", default-features = false }
-codec = { package = "parity-scale-codec", version = "2.0", default-features = false, features = ["derive", "full"], optional = true }
+codec = { package = "parity-scale-codec", version = "3.0", default-features = false, features = ["derive", "full"], optional = true }
 serde = { version = "1.0", default-features = false, features = ["derive"], optional = true }
-scale-info = { version = "1.0.0", default-features = false, features = ["derive"], optional = true }
+scale-info = { version = "2.0", default-features = false, features = ["derive"], optional = true }
 # Work-around for https://github.com/myrrlyn/funty/issues/3
 funty = { version = "=1.1", default-features = false }