diff --git a/src/code-validator/guest/Cargo.lock b/src/code-validator/guest/Cargo.lock
index 04864ad..8914a0f 100644
--- a/src/code-validator/guest/Cargo.lock
+++ b/src/code-validator/guest/Cargo.lock
@@ -97,17 +97,6 @@ version = "0.7.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "7c02d123df017efcdfbd739ef81735b36c5ba83ec3c59c80a9d7ecc718f92e50"
 
-[[package]]
-name = "async-trait"
-version = "0.1.89"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "9035ad2d096bed7955a320ee7e2230574d28fd3c3a0f186cbea1ff3c7eed5dbb"
-dependencies = [
- "proc-macro2",
- "quote",
- "syn",
-]
-
 [[package]]
 name = "base64"
 version = "0.22.1"
@@ -203,12 +192,6 @@ version = "3.20.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "5d20789868f4b01b2f2caec9f5c4e0213b41e3e5702a50157d699ae31ced2fcb"
 
-[[package]]
-name = "bytes"
-version = "1.11.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "1e748733b7cbc798e1434b6ac524f0c1ff2ab456fe201501e6497c8417a4fc33"
-
 [[package]]
 name = "cargo-hyperlight"
 version = "0.1.8"
@@ -499,20 +482,6 @@ version = "1.15.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "48c757948c5ede0e46177b7add2e67155f70e33c07fea8284df6576da70b3719"
 
-[[package]]
-name = "elfcore"
-version = "2.0.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "0fdaa3d1c27119b3394513f4596894a40cd53cb4acec7fce636a9ca0c4abb171"
-dependencies = [
- "libc",
- "nix",
- "smallvec",
- "thiserror",
- "tracing",
- "zerocopy",
-]
-
 [[package]]
 name = "encode_unicode"
 version = "1.0.0"
@@ -716,8 +685,8 @@ dependencies = [
 
 [[package]]
 name = "hyperlight-common"
-version = "0.12.0"
-source = "git+https://github.com/hyperlight-dev/hyperlight?rev=620339aa95d508e8cbd1d38b4374f09090aade7b#620339aa95d508e8cbd1d38b4374f09090aade7b"
+version = "0.13.1"
+source = "git+https://github.com/simongdavies/hyperlight?branch=update-surrogate#5f1912b4ce8a8d83e6ce63425d766bd50f511ef8"
 dependencies = [
  "anyhow",
  "flatbuffers",
@@ -725,12 +694,13 @@ dependencies = [
  "spin",
  "thiserror",
  "tracing",
+ "tracing-core",
 ]
 
 [[package]]
 name = "hyperlight-guest"
-version = "0.12.0"
-source = "git+https://github.com/hyperlight-dev/hyperlight?rev=620339aa95d508e8cbd1d38b4374f09090aade7b#620339aa95d508e8cbd1d38b4374f09090aade7b"
+version = "0.13.1"
+source = "git+https://github.com/simongdavies/hyperlight?branch=update-surrogate#5f1912b4ce8a8d83e6ce63425d766bd50f511ef8"
 dependencies = [
  "anyhow",
  "flatbuffers",
@@ -741,8 +711,8 @@ dependencies = [
 
 [[package]]
 name = "hyperlight-guest-bin"
-version = "0.12.0"
-source = "git+https://github.com/hyperlight-dev/hyperlight?rev=620339aa95d508e8cbd1d38b4374f09090aade7b#620339aa95d508e8cbd1d38b4374f09090aade7b"
+version = "0.13.1"
+source = "git+https://github.com/simongdavies/hyperlight?branch=update-surrogate#5f1912b4ce8a8d83e6ce63425d766bd50f511ef8"
 dependencies = [
  "buddy_system_allocator",
  "cc",
@@ -761,8 +731,8 @@ dependencies = [
 
 [[package]]
 name = "hyperlight-guest-macro"
-version = "0.12.0"
-source = "git+https://github.com/hyperlight-dev/hyperlight?rev=620339aa95d508e8cbd1d38b4374f09090aade7b#620339aa95d508e8cbd1d38b4374f09090aade7b"
+version = "0.13.1"
+source = "git+https://github.com/simongdavies/hyperlight?branch=update-surrogate#5f1912b4ce8a8d83e6ce63425d766bd50f511ef8"
 dependencies = [
  "proc-macro-crate",
  "proc-macro2",
@@ -772,8 +742,8 @@ dependencies = [
 
 [[package]]
 name = "hyperlight-guest-tracing"
-version = "0.12.0"
-source = "git+https://github.com/hyperlight-dev/hyperlight?rev=620339aa95d508e8cbd1d38b4374f09090aade7b#620339aa95d508e8cbd1d38b4374f09090aade7b"
+version = "0.13.1"
+source = "git+https://github.com/simongdavies/hyperlight?branch=update-surrogate#5f1912b4ce8a8d83e6ce63425d766bd50f511ef8"
 dependencies = [
  "hyperlight-common",
  "spin",
@@ -783,8 +753,8 @@ dependencies = [
 
 [[package]]
 name = "hyperlight-host"
-version = "0.12.0"
-source = "git+https://github.com/hyperlight-dev/hyperlight?rev=620339aa95d508e8cbd1d38b4374f09090aade7b#620339aa95d508e8cbd1d38b4374f09090aade7b"
+version = "0.13.1"
+source = "git+https://github.com/simongdavies/hyperlight?branch=update-surrogate#5f1912b4ce8a8d83e6ce63425d766bd50f511ef8"
 dependencies = [
  "anyhow",
  "bitflags 2.11.0",
@@ -792,7 +762,6 @@ dependencies = [
  "cfg-if",
  "cfg_aliases",
  "crossbeam-channel",
- "elfcore",
  "flatbuffers",
  "goblin",
  "hyperlight-common",
@@ -808,7 +777,6 @@ dependencies = [
  "rand",
  "rust-embed",
  "serde_json",
- "sha256",
  "termcolor",
  "thiserror",
  "tracing",
@@ -1074,18 +1042,6 @@ dependencies = [
  "libloading",
 ]
 
-[[package]]
-name = "nix"
-version = "0.31.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5d6d0705320c1e6ba1d912b5e37cf18071b6c2e9b7fa8215a1e8a7651966f5d3"
-dependencies = [
- "bitflags 2.11.0",
- "cfg-if",
- "cfg_aliases",
- "libc",
-]
-
 [[package]]
 name = "nom"
 version = "7.1.3"
@@ -1505,19 +1461,6 @@ dependencies = [
  "digest 0.11.2",
 ]
 
-[[package]]
-name = "sha256"
-version = "1.6.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f880fc8562bdeb709793f00eb42a2ad0e672c4f883bbe59122b926eca935c8f6"
-dependencies = [
- "async-trait",
- "bytes",
- "hex",
- "sha2 0.10.9",
- "tokio",
-]
-
 [[package]]
 name = "shellexpand"
 version = "3.1.2"
@@ -1533,12 +1476,6 @@ version = "1.3.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "0fda2ff0d084019ba4d7c6f371c95d8fd75ce3524c3cb8fb653a3023f6323e64"
 
-[[package]]
-name = "smallvec"
-version = "1.15.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "67b1b7a3b5fe4f1376887184045fcf45c69e92af734b7aaddc05fb777b6fbd03"
-
 [[package]]
 name = "spin"
 version = "0.10.0"
@@ -1600,7 +1537,6 @@ version = "1.50.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "27ad5e34374e03cfffefc301becb44e9dc3c17584f414349ebe29ed26661822d"
 dependencies = [
- "bytes",
  "pin-project-lite",
 ]