diff --git a/memory-db/Cargo.toml b/memory-db/Cargo.toml
index 99b44901..d7358e23 100644
--- a/memory-db/Cargo.toml
+++ b/memory-db/Cargo.toml
@@ -8,9 +8,9 @@ license = "Apache-2.0"
 edition = "2018"
 
 [dependencies]
-parity-util-mem = { version = "0.9.0", default-features = false, features = ["hashbrown"] }
+parity-util-mem = { version = "0.10.0", default-features = false, features = ["hashbrown"] }
 hash-db = { path = "../hash-db", default-features = false, version = "0.15.2"}
-hashbrown = { version = "0.9.1", default-features = false, features = [ "ahash" ] }
+hashbrown = { version = "0.11", default-features = false, features = [ "ahash" ] }
 
 [dev-dependencies]
 keccak-hasher = { path = "../test-support/keccak-hasher", version = "0.15.2"}
diff --git a/test-support/reference-trie/Cargo.toml b/test-support/reference-trie/Cargo.toml
index 2dbed086..8d62e12a 100644
--- a/test-support/reference-trie/Cargo.toml
+++ b/test-support/reference-trie/Cargo.toml
@@ -13,7 +13,7 @@ hash256-std-hasher = { path = "../../hash256-std-hasher", version = "0.15.2" }
 keccak-hasher = { path = "../keccak-hasher", version = "0.15.3" }
 trie-db = { path = "../../trie-db", default-features = false, version = "0.22.0" }
 trie-root = { path = "../../trie-root", default-features = false, version = "0.16.0" }
-parity-scale-codec = { version = "2.2.0-rc.2", features = ["derive"] }
+parity-scale-codec = { version = "2", features = ["derive"] }
 
 [dev-dependencies]
 trie-bench = { path = "../trie-bench", version = "0.27.1" }
diff --git a/test-support/trie-bench/Cargo.toml b/test-support/trie-bench/Cargo.toml
index af17e43a..904c109c 100644
--- a/test-support/trie-bench/Cargo.toml
+++ b/test-support/trie-bench/Cargo.toml
@@ -15,4 +15,4 @@ memory-db = { path = "../../memory-db", version = "0.26.0" }
 trie-root = { path = "../../trie-root", version = "0.16.0" }
 trie-db = { path = "../../trie-db", version = "0.22.0" }
 criterion = "0.3.3"
-parity-scale-codec = { version = "2.2.0-rc.2" }
+parity-scale-codec = { version = "2" }