diff --git a/lib/Cargo.toml b/lib/Cargo.toml
index 8530587..4d11fff 100644
--- a/lib/Cargo.toml
+++ b/lib/Cargo.toml
@@ -14,11 +14,11 @@ default = ["printpdf"]
 rand = "0.5"
 hex = "0.3"
 bech32 = "0.6"
-zcash_primitives = {  git = "https://git.hush.is/hush/librustzcash", rev = "5a48d179b8434a0318e7e19dda506e245a904092" }
+zcash_primitives = {  git = "https://git.hush.is/hush/librustzcash", rev = "3329f46511a13e00684d201c4c03939d64c4fd37" }
 json = "0.11.14"    
 qrcode = { version = "0.8", default-features = false }
 printpdf = { version = "0.3.2", optional = true }
-libsecp256k1 = "0.2.2"
+libsecp256k1 = "0.3.5"
 ripemd160 = "0.8.0"
 sha2 = "0.8.0"
 base58 = "0.1.0"