diff --git a/Cargo.lock b/Cargo.lock
index 5a36deafb..c9c0c4f2f 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -390,7 +390,19 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "41262f11d771fd4a61aa3ce019fca363b4b6c282fca9da2a31186d3965a47a5c"
 dependencies = [
  "either",
- "radium",
+ "radium 0.3.0",
+]
+
+[[package]]
+name = "bitvec"
+version = "0.19.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a7ba35e9565969edb811639dbebfe34edc0368e472c5018474c8eb2543397f81"
+dependencies = [
+ "funty",
+ "radium 0.5.3",
+ "tap",
+ "wyz",
 ]
 
 [[package]]
@@ -561,7 +573,7 @@ version = "0.4.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "f4aedb84272dbe89af497cf81375129abda4fc0a9e7c5d317498c15cc30c0d27"
 dependencies = [
- "nom",
+ "nom 5.1.2",
 ]
 
 [[package]]
@@ -1309,7 +1321,7 @@ version = "0.2.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "e66558629d772c3be040566b7be07be8c8f5aecee95e4a092dfe2efc313277ad"
 dependencies = [
- "nom",
+ "nom 5.1.2",
  "num-bigint 0.3.0",
  "num-traits",
  "proc-macro-hack",
@@ -1322,7 +1334,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "caca07c50eaae94d43e21f4d14eca5543b6f5f5ce64715e9b7665ac5f5185b4e"
 dependencies = [
  "der-oid-macro",
- "nom",
+ "nom 5.1.2",
  "num-bigint 0.3.0",
  "num-traits",
  "proc-macro-hack",
@@ -1734,6 +1746,12 @@ version = "0.3.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "3dcaa9ae7725d12cdb85b3ad99a434db70b468c09ded17e012d86b5c1010f7a7"
 
+[[package]]
+name = "funty"
+version = "1.0.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "0ba62103ce691c2fd80fbae2213dfdda9ce60804973ac6b6e97de818ea7f52c8"
+
 [[package]]
 name = "futures"
 version = "0.1.29"
@@ -2925,7 +2943,7 @@ dependencies = [
  "generic-array 0.14.4",
  "hkdf 0.10.0",
  "hpke",
- "nom",
+ "nom 6.0.0",
  "once_cell",
  "p256",
  "parity-scale-codec",
@@ -3038,6 +3056,18 @@ dependencies = [
  "version_check",
 ]
 
+[[package]]
+name = "nom"
+version = "6.0.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "4489ccc7d668957ddf64af7cd027c081728903afa6479d35da7e99bf5728f75f"
+dependencies = [
+ "bitvec 0.19.4",
+ "lexical-core",
+ "memchr",
+ "version_check",
+]
+
 [[package]]
 name = "num-bigint"
 version = "0.2.6"
@@ -3185,7 +3215,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "7c740e5fbcb6847058b40ac7e5574766c6388f585e184d769910fe0d3a2ca861"
 dependencies = [
  "arrayvec 0.5.1",
- "bitvec",
+ "bitvec 0.17.4",
  "byte-slice-cast",
  "parity-scale-codec-derive",
  "serde",
@@ -3706,6 +3736,12 @@ version = "0.3.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "def50a86306165861203e7f84ecffbbdfdea79f0e51039b33de1e952358c47ac"
 
+[[package]]
+name = "radium"
+version = "0.5.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "941ba9d78d8e2f7ce474c015eea4d9c6d25b6a3327f9832ee29a4de27f91bbb8"
+
 [[package]]
 name = "rand"
 version = "0.4.6"
@@ -4138,7 +4174,7 @@ version = "2.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "f8a9050636e8a1b487ba1fbe99114021cd7594dde3ce6ed95bfc1691e5b5367b"
 dependencies = [
- "nom",
+ "nom 5.1.2",
 ]
 
 [[package]]
@@ -4704,6 +4740,12 @@ dependencies = [
  "chrono",
 ]
 
+[[package]]
+name = "tap"
+version = "1.0.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "36474e732d1affd3a6ed582781b3683df3d0563714c59c39591e8ff707cf078e"
+
 [[package]]
 name = "tdb-enclave-app"
 version = "0.6.0"
@@ -5740,6 +5782,12 @@ dependencies = [
  "winapi-build",
 ]
 
+[[package]]
+name = "wyz"
+version = "0.2.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "85e60b0d1b5f99db2556934e21937020776a5d31520bf169e851ac44e6420214"
+
 [[package]]
 name = "x509-parser"
 version = "0.8.2"
@@ -5752,7 +5800,7 @@ dependencies = [
  "der-oid-macro",
  "der-parser",
  "lazy_static",
- "nom",
+ "nom 5.1.2",
  "num-bigint 0.3.0",
  "rusticata-macros",
  "rustversion",
diff --git a/chain-tx-enclave-next/mls/Cargo.toml b/chain-tx-enclave-next/mls/Cargo.toml
index 3f7e0ba05..5b26a5d37 100644
--- a/chain-tx-enclave-next/mls/Cargo.toml
+++ b/chain-tx-enclave-next/mls/Cargo.toml
@@ -11,7 +11,7 @@ ring = { version = "0.16.15", features = ["std"] }
 thiserror = "1.0"
 rustls = "0.18"
 x509-parser = "0.8.2"
-nom = "5.1"
+nom = "6.0"
 secrecy = "0.7.0"
 sha2 = "0.9"
 hkdf = { version = "0.10", features = ["std"] }