diff --git a/Cargo.lock b/Cargo.lock
index 1d13811c..43a56806 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -253,12 +253,6 @@ dependencies = [
  "rustc-demangle",
 ]
 
-[[package]]
-name = "base16ct"
-version = "0.1.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "349a06037c7bf932dd7e7d1f653678b2038b9ad46a74102f1fc7bd7872678cce"
-
 [[package]]
 name = "base58"
 version = "0.2.0"
@@ -445,12 +439,6 @@ dependencies = [
  "os_str_bytes",
 ]
 
-[[package]]
-name = "const-oid"
-version = "0.9.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "cec318a675afcb6a1ea1d4340e2d377e56e47c266f28043ceccbf4412ddfdd3b"
-
 [[package]]
 name = "const-random"
 version = "0.1.15"
@@ -562,18 +550,6 @@ version = "0.2.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "7a81dae078cea95a014a339291cec439d2f232ebe854a9d672b796c6afafa9b7"
 
-[[package]]
-name = "crypto-bigint"
-version = "0.4.9"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ef2b4b23cddf68b89b8f8069890e8c270d54e2d5fe1b143820234805e4cb17ef"
-dependencies = [
- "generic-array",
- "rand_core",
- "subtle",
- "zeroize",
-]
-
 [[package]]
 name = "crypto-common"
 version = "0.1.6"
@@ -600,16 +576,6 @@ dependencies = [
  "syn",
 ]
 
-[[package]]
-name = "der"
-version = "0.6.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f1a467a65c5e759bce6e65eaf91cc29f466cdc57cb65777bd646872a8a1fd4de"
-dependencies = [
- "const-oid",
- "zeroize",
-]
-
 [[package]]
 name = "diff"
 version = "0.1.13"
@@ -647,44 +613,12 @@ dependencies = [
  "winapi",
 ]
 
-[[package]]
-name = "ecdsa"
-version = "0.15.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "12844141594ad74185a926d030f3b605f6a903b4e3fec351f3ea338ac5b7637e"
-dependencies = [
- "der",
- "elliptic-curve",
- "rfc6979",
- "signature",
-]
-
 [[package]]
 name = "either"
 version = "1.8.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "90e5c1c8368803113bf0c9584fc495a58b86dc8a29edbf8fe877d21d9507e797"
 
-[[package]]
-name = "elliptic-curve"
-version = "0.12.3"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e7bb888ab5300a19b8e5bceef25ac745ad065f3c9f7efc6de1b91958110891d3"
-dependencies = [
- "base16ct",
- "crypto-bigint",
- "der",
- "digest",
- "ff",
- "generic-array",
- "group",
- "pkcs8",
- "rand_core",
- "sec1",
- "subtle",
- "zeroize",
-]
-
 [[package]]
 name = "encoding_rs"
 version = "0.8.31"
@@ -703,16 +637,6 @@ dependencies = [
  "instant",
 ]
 
-[[package]]
-name = "ff"
-version = "0.12.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d013fc25338cc558c5c2cfbad646908fb23591e2404481826742b651c9af7160"
-dependencies = [
- "rand_core",
- "subtle",
-]
-
 [[package]]
 name = "fixedbitset"
 version = "0.4.2"
@@ -913,17 +837,6 @@ dependencies = [
  "regex",
 ]
 
-[[package]]
-name = "group"
-version = "0.12.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5dfbfb3a6cfbd390d5c9564ab283a0349b9b9fcd46a706c1eb10e0db70bfbac7"
-dependencies = [
- "ff",
- "rand_core",
- "subtle",
-]
-
 [[package]]
 name = "h2"
 version = "0.3.15"
@@ -1172,20 +1085,6 @@ dependencies = [
  "wasm-bindgen",
 ]
 
-[[package]]
-name = "k256"
-version = "0.12.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "92a55e0ff3b72c262bcf041d9e97f1b84492b68f1c1a384de2323d3dc9403397"
-dependencies = [
- "cfg-if",
- "ecdsa",
- "elliptic-curve",
- "once_cell",
- "sha2",
- "signature",
-]
-
 [[package]]
 name = "lazy_static"
 version = "1.4.0"
@@ -1719,16 +1618,6 @@ version = "0.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "8b870d8c151b6f2fb93e84a13146138f05d02ed11c7e7c54f8826aaaf7c9f184"
 
-[[package]]
-name = "pkcs8"
-version = "0.9.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "9eca2c590a5f85da82668fa685c09ce2888b9430e83299debf1f34b65fd4a4ba"
-dependencies = [
- "der",
- "spki",
-]
-
 [[package]]
 name = "pkg-config"
 version = "0.3.26"
@@ -2006,17 +1895,6 @@ dependencies = [
  "winreg",
 ]
 
-[[package]]
-name = "rfc6979"
-version = "0.3.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "7743f17af12fa0b03b803ba12cd6a8d9483a587e89c69445e3909655c0b9fabb"
-dependencies = [
- "crypto-bigint",
- "hmac",
- "zeroize",
-]
-
 [[package]]
 name = "rustc-demangle"
 version = "0.1.21"
@@ -2073,17 +1951,21 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "d29ab0c6d3fc0ee92fe66e2d99f700eab17a8d57d1c1d3b748380fb20baa78cd"
 
 [[package]]
-name = "sec1"
-version = "0.3.0"
+name = "secp256k1"
+version = "0.26.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "3be24c1842290c45df0a7bf069e0c268a747ad05a192f2fd7dcfdbc1cba40928"
+checksum = "4124a35fe33ae14259c490fd70fa199a32b9ce9502f2ee6bc4f81ec06fa65894"
 dependencies = [
- "base16ct",
- "der",
- "generic-array",
- "pkcs8",
- "subtle",
- "zeroize",
+ "secp256k1-sys",
+]
+
+[[package]]
+name = "secp256k1-sys"
+version = "0.8.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "642a62736682fdd8c71da0eb273e453c8ac74e33b9fb310e22ba5b03ec7651ff"
+dependencies = [
+ "cc",
 ]
 
 [[package]]
@@ -2195,16 +2077,6 @@ dependencies = [
  "libc",
 ]
 
-[[package]]
-name = "signature"
-version = "2.0.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "8fe458c98333f9c8152221191a77e2a44e8325d0193484af2e9421a53019e57d"
-dependencies = [
- "digest",
- "rand_core",
-]
-
 [[package]]
 name = "slab"
 version = "0.4.7"
@@ -2236,16 +2108,6 @@ dependencies = [
  "winapi",
 ]
 
-[[package]]
-name = "spki"
-version = "0.6.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "67cf02bbac7a337dc36e4f5a693db6c21e7863f45070f7064577eb4367a3212b"
-dependencies = [
- "base64ct",
- "der",
-]
-
 [[package]]
 name = "static_assertions"
 version = "1.1.0"
@@ -2638,7 +2500,6 @@ dependencies = [
  "hex",
  "indexmap",
  "itertools",
- "k256",
  "pallas-addresses",
  "pallas-codec",
  "pallas-crypto",
@@ -2647,6 +2508,7 @@ dependencies = [
  "peg",
  "pretty",
  "proptest",
+ "secp256k1",
  "serde",
  "serde_json",
  "strum",
@@ -2975,12 +2837,6 @@ version = "0.5.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "09041cd90cf85f7f8b2df60c646f853b7f535ce68f85244eb6731cf89fa498ec"
 
-[[package]]
-name = "zeroize"
-version = "1.5.7"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c394b5bd0c6f669e7275d9c20aa90ae064cb22e75a1cad54e1b34088034b149f"
-
 [[package]]
 name = "zip"
 version = "0.6.4"
diff --git a/crates/uplc/Cargo.toml b/crates/uplc/Cargo.toml
index c3070337..bed15716 100644
--- a/crates/uplc/Cargo.toml
+++ b/crates/uplc/Cargo.toml
@@ -31,7 +31,7 @@ strum = "0.24.1"
 strum_macros = "0.24.3"
 itertools = "0.10.5"
 indexmap = "1.9.2"
-k256 = "0.12.0"
+secp256k1 = "0.26.0"
 
 [dev-dependencies]
 hex = "0.4.3"