diff --git a/Cargo.toml b/Cargo.toml
index 00ad4392..0adbc5de 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,5 +1,5 @@
 [workspace]
-edition = "2021"
+resolver = "2"
 members = [
   "ethcontract",
   "ethcontract-common",
diff --git a/ethcontract-mock/Cargo.toml b/ethcontract-mock/Cargo.toml
index 8ca2155a..7e904f73 100644
--- a/ethcontract-mock/Cargo.toml
+++ b/ethcontract-mock/Cargo.toml
@@ -20,4 +20,4 @@ predicates = "2.0"
 
 [dev-dependencies]
 tokio = { version = "1.6", features = ["macros", "rt"] }
-ethcontract-derive = { version = "0.16.0", path = "../ethcontract-derive", default-featuers = false }
+ethcontract-derive = { version = "0.16.0", path = "../ethcontract-derive", default-features = false }