diff --git a/Cargo.lock b/Cargo.lock
index ce335cb03..ca50dfebe 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -1180,7 +1180,6 @@ dependencies = [
  "evm-core",
  "evm-gasometer",
  "evm-runtime",
- "hex",
  "serde",
 ]
 
@@ -2128,9 +2127,9 @@ dependencies = [
 
 [[package]]
 name = "memmap2"
-version = "0.5.4"
+version = "0.5.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d5172b50c23043ff43dd53e51392f36519d9b35a8f3a410d30ece5d1aedd58ae"
+checksum = "fe3179b85e1fd8b14447cbebadb75e45a1002f541b925f0bfec366d56a81c56d"
 dependencies = [
  "libc",
 ]
diff --git a/engine-standalone-tracing/Cargo.toml b/engine-standalone-tracing/Cargo.toml
index e2c3d0c32..c75c273c3 100644
--- a/engine-standalone-tracing/Cargo.toml
+++ b/engine-standalone-tracing/Cargo.toml
@@ -21,7 +21,6 @@ evm-core = { git = "https://github.com/aurora-is-near/sputnikvm.git", rev = "374
 evm = { git = "https://github.com/aurora-is-near/sputnikvm.git", rev = "37448b6cacd98b06282cff5a559684505c29bd2b", default-features = false, features = ["std", "tracing"] }
 evm-runtime = { git = "https://github.com/aurora-is-near/sputnikvm.git", rev = "37448b6cacd98b06282cff5a559684505c29bd2b", default-features = false, features = ["std", "tracing"] }
 evm-gasometer = { git = "https://github.com/aurora-is-near/sputnikvm.git", rev = "37448b6cacd98b06282cff5a559684505c29bd2b", default-features = false, features = ["std", "tracing"] }
-hex = { version = "0.4" }
 serde = { version = "1", features = ["derive"], optional = true }
 
 [features]
diff --git a/etc/self-contained-5bEgfRQ/Cargo.lock b/etc/self-contained-5bEgfRQ/Cargo.lock
index 6ff1281ca..7b05cad08 100644
--- a/etc/self-contained-5bEgfRQ/Cargo.lock
+++ b/etc/self-contained-5bEgfRQ/Cargo.lock
@@ -26,6 +26,16 @@ version = "0.7.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "8da52d66c7071e2e3fa2a1e5c6d088fec47b593032b254f5e980de8ea54454d6"
 
+[[package]]
+name = "aurora-blake2"
+version = "0.9.1"
+source = "git+https://github.com/aurora-is-near/aurora-blake2.git#05a0b5f7a544c527c0118f8afe2f943b3de4bb03"
+dependencies = [
+ "crypto-mac",
+ "digest 0.9.0",
+ "opaque-debug 0.3.0",
+]
+
 [[package]]
 name = "aurora-bn"
 version = "0.1.0"
@@ -66,6 +76,7 @@ dependencies = [
 name = "aurora-engine-precompiles"
 version = "1.0.0"
 dependencies = [
+ "aurora-blake2",
  "aurora-bn",
  "aurora-engine-sdk",
  "aurora-engine-types",
@@ -512,27 +523,6 @@ version = "0.4.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "7f24254aa9a54b5c858eaee2f5bccdb46aaf0e486a595ed5fd8f86ba55232a70"
 
-[[package]]
-name = "hmac"
-version = "0.8.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "126888268dcc288495a26bf004b38c5fdbb31682f992c84ceb046a1f0fe38840"
-dependencies = [
- "crypto-mac",
- "digest 0.9.0",
-]
-
-[[package]]
-name = "hmac-drbg"
-version = "0.3.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "17ea0a1394df5b6574da6e0c1ade9e78868c9fb0a4e5ef4428e32da4676b85b1"
-dependencies = [
- "digest 0.9.0",
- "generic-array 0.14.5",
- "hmac",
-]
-
 [[package]]
 name = "impl-codec"
 version = "0.5.1"
@@ -591,52 +581,17 @@ checksum = "349d5a591cd28b49e1d1037471617a32ddcda5731b99419008085f72d5a53836"
 
 [[package]]
 name = "libsecp256k1"
-version = "0.7.0"
+version = "0.3.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b0452aac8bab02242429380e9b2f94ea20cea2b37e2c1777a1358799bbe97f37"
+checksum = "1fc1e2c808481a63dc6da2074752fdd4336a3c8fcc68b83db6f1fd5224ae7962"
 dependencies = [
  "arrayref",
- "base64",
- "digest 0.9.0",
- "hmac-drbg",
- "libsecp256k1-core",
- "libsecp256k1-gen-ecmult",
- "libsecp256k1-gen-genmult",
- "rand",
- "serde",
- "sha2",
- "typenum",
-]
-
-[[package]]
-name = "libsecp256k1-core"
-version = "0.3.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5be9b9bb642d8522a44d533eab56c16c738301965504753b03ad1de3425d5451"
-dependencies = [
  "crunchy",
- "digest 0.9.0",
+ "digest 0.8.1",
+ "rand",
  "subtle",
 ]
 
-[[package]]
-name = "libsecp256k1-gen-ecmult"
-version = "0.3.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "3038c808c55c87e8a172643a7d87187fc6c4174468159cb3090659d55bcb4809"
-dependencies = [
- "libsecp256k1-core",
-]
-
-[[package]]
-name = "libsecp256k1-gen-genmult"
-version = "0.3.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "3db8d6ba2cec9eacc40e6e8ccc98931840301f1006e95647ceb2dd5c3aa06f7c"
-dependencies = [
- "libsecp256k1-core",
-]
-
 [[package]]
 name = "log"
 version = "0.4.17"
@@ -788,6 +743,12 @@ dependencies = [
  "syn",
 ]
 
+[[package]]
+name = "ppv-lite86"
+version = "0.2.16"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "eb9f9e6e233e5c4a35559a617bf40a4ec447db2e84c20b55a6f83167b7e57872"
+
 [[package]]
 name = "primitive-types"
 version = "0.10.1"
@@ -864,18 +825,39 @@ dependencies = [
 
 [[package]]
 name = "rand"
-version = "0.8.5"
+version = "0.7.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "6a6b1679d49b24bbfe0c803429aa1874472f50d9b363131f0e89fc356b544d03"
+dependencies = [
+ "rand_chacha",
+ "rand_core",
+ "rand_hc",
+]
+
+[[package]]
+name = "rand_chacha"
+version = "0.2.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "34af8d1a0e25924bc5b7c43c079c942339d8f0a8b57c39049bef581b46327404"
+checksum = "f4c8ed856279c9737206bf725bf36935d8666ead7aa69b52be55af369d193402"
 dependencies = [
+ "ppv-lite86",
  "rand_core",
 ]
 
 [[package]]
 name = "rand_core"
-version = "0.6.3"
+version = "0.5.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "90bde5296fc891b0cef12a6d03ddccc162ce7b2aff54160af9338f8d40df6d19"
+
+[[package]]
+name = "rand_hc"
+version = "0.2.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d34f1408f55294453790c48b2f1ebbb1c5b4b7563eb1f418bcfcfdbb06ebb4e7"
+checksum = "ca3129af7b92a17112d59ad498c6f81eaf463253766b90396d39ea7a39d6613c"
+dependencies = [
+ "rand_core",
+]
 
 [[package]]
 name = "regex-syntax"
@@ -965,20 +947,6 @@ name = "serde"
 version = "1.0.137"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "61ea8d54c77f8315140a05f4c7237403bf38b72704d031543aa1d16abbf517d1"
-dependencies = [
- "serde_derive",
-]
-
-[[package]]
-name = "serde_derive"
-version = "1.0.137"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "1f26faba0c3959972377d3b2d306ee9f71faee9714294e41bb777f83f88578be"
-dependencies = [
- "proc-macro2",
- "quote",
- "syn",
-]
 
 [[package]]
 name = "sha2"
diff --git a/etc/state-migration-test/Cargo.lock b/etc/state-migration-test/Cargo.lock
index f65c71a92..d7eb518cb 100644
--- a/etc/state-migration-test/Cargo.lock
+++ b/etc/state-migration-test/Cargo.lock
@@ -37,7 +37,7 @@ dependencies = [
 
 [[package]]
 name = "aurora-engine"
-version = "2.1.0"
+version = "2.6.1"
 dependencies = [
  "aurora-bn",
  "aurora-engine-precompiles",