diff --git a/util/Cargo.toml b/util/Cargo.toml
index ccb91973c..f8409b4bb 100644
--- a/util/Cargo.toml
+++ b/util/Cargo.toml
@@ -13,5 +13,5 @@ lazy_static = "~0.2.8"
 rand = "0.3"
 serde = "~1.0.8"
 serde_derive = "~1.0.8"
-secp256k1zkp = { git = "https://github.com/mimblewimble/rust-secp256k1-zkp", tag="grin_integration_1" }
+secp256k1zkp = { git = "https://github.com/mimblewimble/rust-secp256k1-zkp", tag="grin_integration_2" }