diff --git a/Cargo.lock b/Cargo.lock
index e1180a58..c72eadbe 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -771,7 +771,7 @@ dependencies = [
  "byteorder 1.2.4 (registry+https://github.com/rust-lang/crates.io-index)",
  "lazy_static 1.0.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "rand 0.3.22 (registry+https://github.com/rust-lang/crates.io-index)",
- "secp256k1zkp 0.7.1 (git+https://github.com/mimblewimble/rust-secp256k1-zkp?tag=grin_integration_21)",
+ "secp256k1zkp 0.7.1 (git+https://github.com/mimblewimble/rust-secp256k1-zkp?tag=grin_integration_22)",
  "serde 1.0.70 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde_derive 1.0.70 (registry+https://github.com/rust-lang/crates.io-index)",
  "slog 2.2.3 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -1639,7 +1639,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 [[package]]
 name = "secp256k1zkp"
 version = "0.7.1"
-source = "git+https://github.com/mimblewimble/rust-secp256k1-zkp?tag=grin_integration_21#301e6b6b5e19c6738c9d4b6b51e34c5ce256354e"
+source = "git+https://github.com/mimblewimble/rust-secp256k1-zkp?tag=grin_integration_22#248f999f1c454188e62ef12ca3a4b2fefe35d7a4"
 dependencies = [
  "arrayvec 0.3.25 (registry+https://github.com/rust-lang/crates.io-index)",
  "gcc 0.3.54 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -2473,7 +2473,7 @@ dependencies = [
 "checksum schannel 0.1.13 (registry+https://github.com/rust-lang/crates.io-index)" = "dc1fabf2a7b6483a141426e1afd09ad543520a77ac49bd03c286e7696ccfd77f"
 "checksum scoped-tls 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)" = "332ffa32bf586782a3efaeb58f127980944bbc8c4d6913a86107ac2a5ab24b28"
 "checksum scopeguard 0.3.3 (registry+https://github.com/rust-lang/crates.io-index)" = "94258f53601af11e6a49f722422f6e3425c52b06245a5cf9bc09908b174f5e27"
-"checksum secp256k1zkp 0.7.1 (git+https://github.com/mimblewimble/rust-secp256k1-zkp?tag=grin_integration_21)" = "<none>"
+"checksum secp256k1zkp 0.7.1 (git+https://github.com/mimblewimble/rust-secp256k1-zkp?tag=grin_integration_22)" = "<none>"
 "checksum security-framework 0.1.16 (registry+https://github.com/rust-lang/crates.io-index)" = "dfa44ee9c54ce5eecc9de7d5acbad112ee58755239381f687e564004ba4a2332"
 "checksum security-framework-sys 0.1.16 (registry+https://github.com/rust-lang/crates.io-index)" = "5421621e836278a0b139268f36eee0dc7e389b784dc3f79d8f11aabadf41bead"
 "checksum semver 0.9.0 (registry+https://github.com/rust-lang/crates.io-index)" = "1d7eb9ef2c18661902cc47e535f9bc51b78acd254da71d375c2f6720d9a40403"