diff --git a/Cargo.toml b/Cargo.toml
index 3d12baff..d7551056 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -17,7 +17,7 @@ base64 = "0.10.1"
 blake2 = "0.9.1"
 borsh = { version = "0.9.3", optional = true }
 bulletproofs = { package = "tari_bulletproofs", git = "https://github.com/tari-project/bulletproofs", tag = "v4.4.0" }
-bulletproofs_plus = { package = "tari_bulletproofs_plus", git = "https://github.com/tari-project/bulletproofs-plus" }
+bulletproofs_plus = { package = "tari_bulletproofs_plus", git = "https://github.com/tari-project/bulletproofs-plus", tag = "v0.2.1" }
 curve25519-dalek = {git = "https://github.com/tari-project/curve25519-dalek", tag = "v4.0.1", default-features = false, features = ["serde", "alloc"] }
 digest = "0.9.0"
 getrandom = { version = "0.2.3", default-features = false, optional = true }
@@ -28,7 +28,7 @@ once_cell = "1.8.0"
 rand = { version = "0.7.3", default-features = false }
 rand_chacha = "0.3.1"
 rand_core = "0.6.4"
-serde = "1.0.150"
+serde = "1.0.89"
 serde_json = "1.0"
 serde-wasm-bindgen = { version = "0.4", optional = true }
 sha3 = "0.9.0"
@@ -37,7 +37,7 @@ wasm-bindgen = { version = "^0.2", features = ["serde-serialize"], optional = tr
 zeroize = "1"
 
 [dev-dependencies]
-bincode = "1"
+bincode = "1.1.4"
 criterion = "0.3.4"
 rand_chacha = "0.3.1"
 sha2 = "0.9.5"