diff --git a/Cargo.lock b/Cargo.lock
index 7270d40..f83192d 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -81,17 +81,6 @@ dependencies = [
  "opaque-debug",
 ]
 
-[[package]]
-name = "ahash"
-version = "0.7.8"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "891477e0c6a8957309ee5c45a6368af3ae14bb510732d2684ffa19af310920f9"
-dependencies = [
- "getrandom 0.2.12",
- "once_cell",
- "version_check",
-]
-
 [[package]]
 name = "ahash"
 version = "0.8.11"
@@ -845,6 +834,9 @@ name = "bitflags"
 version = "2.4.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "ed570934406eb16438a4e976b1b4500774099c13b8cb96eec99f620f05090ddf"
+dependencies = [
+ "serde",
+]
 
 [[package]]
 name = "bitvec"
@@ -1127,11 +1119,12 @@ dependencies = [
 
 [[package]]
 name = "config"
-version = "0.13.4"
+version = "0.14.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "23738e11972c7643e4ec947840fc463b6a571afcd3e735bdfce7d03c7a784aca"
+checksum = "7328b20597b53c2454f0b1919720c25c7339051c02b72b7e05409e00b14132be"
 dependencies = [
  "async-trait",
+ "convert_case 0.6.0",
  "json5",
  "lazy_static",
  "nom",
@@ -1140,7 +1133,7 @@ dependencies = [
  "rust-ini",
  "serde",
  "serde_json",
- "toml 0.5.11",
+ "toml",
  "yaml-rust",
 ]
 
@@ -1180,6 +1173,26 @@ dependencies = [
  "tracing-subscriber",
 ]
 
+[[package]]
+name = "const-random"
+version = "0.1.18"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "87e00182fe74b066627d63b85fd550ac2998d4b0bd86bfed477a0ae4c7c71359"
+dependencies = [
+ "const-random-macro",
+]
+
+[[package]]
+name = "const-random-macro"
+version = "0.1.16"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f9d839f2a20b0aee515dc581a6172f2321f96cab76c1a38a4c584a194955390e"
+dependencies = [
+ "getrandom 0.2.12",
+ "once_cell",
+ "tiny-keccak",
+]
+
 [[package]]
 name = "const_fn"
 version = "0.4.9"
@@ -1198,6 +1211,15 @@ version = "0.4.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "6245d59a3e82a7fc217c5828a6692dbc6dfb63a0c8c90495621f7b9d79704a0e"
 
+[[package]]
+name = "convert_case"
+version = "0.6.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ec182b0ca2f35d8fc196cf3404988fd8b8c739a4d270ff118a398feb0cbec1ca"
+dependencies = [
+ "unicode-segmentation",
+]
+
 [[package]]
 name = "cookie"
 version = "0.14.4"
@@ -1487,7 +1509,7 @@ version = "0.99.17"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "4fb810d30a7c1953f91334de7244731fc3f3c10d7fe163338a35b9f640960321"
 dependencies = [
- "convert_case",
+ "convert_case 0.4.0",
  "proc-macro2",
  "quote",
  "rustc_version 0.4.0",
@@ -1554,9 +1576,12 @@ dependencies = [
 
 [[package]]
 name = "dlv-list"
-version = "0.3.0"
+version = "0.5.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "0688c2a7f92e427f44895cd63841bff7b29f8d7a1648b9e7e07a4a365b2e1257"
+checksum = "442039f5147480ba31067cb00ada1adae6892028e40e45fc5de7b7df6dcc1b5f"
+dependencies = [
+ "const-random",
+]
 
 [[package]]
 name = "doc-comment"
@@ -2033,9 +2058,6 @@ name = "hashbrown"
 version = "0.12.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "8a9ee70c43aaf417c914396645a0fa852624801b24ebb7ae78fe8272889ac888"
-dependencies = [
- "ahash 0.7.8",
-]
 
 [[package]]
 name = "hashbrown"
@@ -2043,7 +2065,7 @@ version = "0.13.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "43a3c133739dddd0d2990f9a4bdf8eb4b21ef50e4851ca85ab661199821d510e"
 dependencies = [
- "ahash 0.8.11",
+ "ahash",
 ]
 
 [[package]]
@@ -2052,7 +2074,7 @@ version = "0.14.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "290f1a1d9242c78d09ce40a5e87e7554ee637af1351968159f4952f028f75604"
 dependencies = [
- "ahash 0.8.11",
+ "ahash",
  "allocator-api2",
 ]
 
@@ -2115,10 +2137,11 @@ dependencies = [
 
 [[package]]
 name = "hotshot-types"
-version = "0.1.9"
-source = "git+https://github.com/EspressoSystems/hotshot-types?tag=0.1.9#4c8dffbb3b47c35d9bc465cc6520d06da578f9ec"
+version = "0.1.11"
+source = "git+https://github.com/EspressoSystems/hotshot-types?tag=0.1.11#65a06f75612f529c11e97c4320f1f6d0f49ba81e"
 dependencies = [
  "anyhow",
+ "ark-bls12-381",
  "ark-bn254",
  "ark-ec",
  "ark-ed-on-bn254",
@@ -2157,11 +2180,12 @@ dependencies = [
  "tokio",
  "tracing",
  "typenum",
+ "versioned-binary-serialization",
 ]
 
 [[package]]
 name = "hs-builder-api"
-version = "0.1.3"
+version = "0.1.6"
 dependencies = [
  "async-trait",
  "clap",
@@ -2169,10 +2193,11 @@ dependencies = [
  "futures",
  "hotshot-types",
  "serde",
- "snafu 0.7.5",
+ "snafu 0.8.2",
  "tagged-base64",
  "tide-disco",
- "toml 0.8.11",
+ "toml",
+ "versioned-binary-serialization",
 ]
 
 [[package]]
@@ -2786,9 +2811,9 @@ checksum = "0e7465ac9959cc2b1404e8e2367b43684a6d13790fe23056cc8c6c5a6b7bcb94"
 
 [[package]]
 name = "maud"
-version = "0.25.0"
+version = "0.26.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b0bab19cef8a7fe1c18a43e881793bfc9d4ea984befec3ae5bd0415abf3ecf00"
+checksum = "df518b75016b4289cdddffa1b01f2122f4a49802c93191f3133f6dc2472ebcaa"
 dependencies = [
  "itoa",
  "maud_macros",
@@ -2797,14 +2822,14 @@ dependencies = [
 
 [[package]]
 name = "maud_macros"
-version = "0.25.0"
+version = "0.26.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "0be95d66c3024ffce639216058e5bae17a83ecaf266ffc6e4d060ad447c9eed2"
+checksum = "fa453238ec218da0af6b11fc5978d3b5c3a45ed97b722391a2a11f3306274e18"
 dependencies = [
  "proc-macro-error",
  "proc-macro2",
  "quote",
- "syn 1.0.109",
+ "syn 2.0.53",
 ]
 
 [[package]]
@@ -2999,12 +3024,12 @@ checksum = "04744f49eae99ab78e0d5c0b603ab218f515ea8cfe5a456d7629ad883a3b6e7d"
 
 [[package]]
 name = "ordered-multimap"
-version = "0.4.3"
+version = "0.6.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ccd746e37177e1711c20dd619a1620f34f5c8b569c53590a72dedd5344d8924a"
+checksum = "4ed8acf08e98e744e5384c8bc63ceb0364e68a6854187221c18df61c4797690e"
 dependencies = [
  "dlv-list",
- "hashbrown 0.12.3",
+ "hashbrown 0.13.2",
 ]
 
 [[package]]
@@ -3299,7 +3324,6 @@ dependencies = [
  "proc-macro-error-attr",
  "proc-macro2",
  "quote",
- "syn 1.0.109",
  "version_check",
 ]
 
@@ -3564,13 +3588,14 @@ dependencies = [
 
 [[package]]
 name = "ron"
-version = "0.7.1"
+version = "0.8.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "88073939a61e5b7680558e6be56b419e208420c2adb92be54921fa6b72283f1a"
+checksum = "b91f7eff05f748767f183df4320a63d6936e9c6107d97c9e6bdd9784f4289c94"
 dependencies = [
- "base64 0.13.1",
- "bitflags 1.3.2",
+ "base64 0.21.7",
+ "bitflags 2.4.2",
  "serde",
+ "serde_derive",
 ]
 
 [[package]]
@@ -3591,9 +3616,9 @@ dependencies = [
 
 [[package]]
 name = "rust-ini"
-version = "0.18.0"
+version = "0.19.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f6d5f2436026b4f6e79dc829837d467cc7e9a55ee40e750d716713540715a2df"
+checksum = "7e2a3bcec1f113553ef1c88aae6c020a369d03d55b58de9869a0908930385091"
 dependencies = [
  "cfg-if",
  "ordered-multimap",
@@ -4133,15 +4158,15 @@ checksum = "5ee073c9e4cd00e28217186dbe12796d692868f432bf2e97ee73bed0c56dfa01"
 
 [[package]]
 name = "strum"
-version = "0.25.0"
+version = "0.26.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "290d54ea6f91c969195bdbcd7442c8c2a2ba87da8bf60a7ee86a235d4bc1e125"
+checksum = "5d8cec3501a5194c432b2b7976db6b7d10ec95c253208b45f83f7136aa985e29"
 
 [[package]]
 name = "strum_macros"
-version = "0.25.3"
+version = "0.26.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "23dc1fa9ac9c169a78ba62f0b841814b7abae11bdd047b9c58f893439e309ea0"
+checksum = "c6cf59daf282c0a494ba14fd21610a0325f9f90ec9d1231dea26bcb1d696c946"
 dependencies = [
  "heck 0.4.1",
  "proc-macro2",
@@ -4388,12 +4413,12 @@ dependencies = [
 
 [[package]]
 name = "tide-disco"
-version = "0.4.6"
-source = "git+https://github.com/EspressoSystems/tide-disco.git?tag=v0.4.6#4ced31cef8aae769994098d245e026c127801b74"
+version = "0.5.0"
+source = "git+https://github.com/EspressoSystems/tide-disco.git?tag=v0.5.0#07e489171089650cebfaca9ca6a6a6ddd843610d"
 dependencies = [
+ "anyhow",
  "async-std",
  "async-trait",
- "bincode",
  "clap",
  "config",
  "derivative",
@@ -4420,20 +4445,21 @@ dependencies = [
  "shellexpand",
  "signal-hook",
  "signal-hook-async-std",
- "snafu 0.7.5",
+ "snafu 0.8.2",
  "strum",
  "strum_macros",
  "surf",
  "tagged-base64",
  "tide",
  "tide-websockets",
- "toml 0.8.11",
+ "toml",
  "tracing",
  "tracing-distributed",
  "tracing-futures",
  "tracing-log",
  "tracing-subscriber",
  "url",
+ "versioned-binary-serialization",
 ]
 
 [[package]]
@@ -4613,15 +4639,6 @@ dependencies = [
  "tracing",
 ]
 
-[[package]]
-name = "toml"
-version = "0.5.11"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f4f7f0dd8d50a853a531c426359045b1998f04219d88799810762cd4ad314234"
-dependencies = [
- "serde",
-]
-
 [[package]]
 name = "toml"
 version = "0.8.11"
@@ -4914,6 +4931,12 @@ dependencies = [
  "tinyvec",
 ]
 
+[[package]]
+name = "unicode-segmentation"
+version = "1.11.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d4c87d22b6e3f4a18d4d40ef354e97c90fcb14dd91d7dc0aa9d8a1172ebf7202"
+
 [[package]]
 name = "universal-hash"
 version = "0.4.0"
@@ -5012,6 +5035,18 @@ version = "0.9.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "49874b5167b65d7193b8aba1567f5c7d93d001cafc34600cee003eda787e483f"
 
+[[package]]
+name = "versioned-binary-serialization"
+version = "0.1.2"
+source = "git+https://github.com/EspressoSystems/versioned-binary-serialization.git?tag=0.1.2#6874f91a3c8d64acc24fe0abe4ad93c35b75eb9d"
+dependencies = [
+ "anyhow",
+ "bincode",
+ "displaydoc",
+ "serde",
+ "serde_with",
+]
+
 [[package]]
 name = "waker-fn"
 version = "1.1.1"
diff --git a/Cargo.toml b/Cargo.toml
index 234acf9..e18e8db 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "hs-builder-api"
-version = "0.1.5"
+version = "0.1.6"
 edition = "2021"
 
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
@@ -10,9 +10,10 @@ async-trait = "0.1"
 clap = { version = "4.4", features = ["derive", "env"] }
 derive_more = "0.99"
 futures = "0.3"
-hotshot-types = { git = "https://github.com/EspressoSystems/hotshot-types", tag = "0.1.10" }
+hotshot-types = { git = "https://github.com/EspressoSystems/hotshot-types", tag = "0.1.11" }
 serde = { version = "1.0", features = ["derive"] }
-snafu = { version = "0.7", features = ["backtraces"] }
+snafu = "0.8"
 tagged-base64 = { git = "https://github.com/EspressoSystems/tagged-base64", tag = "0.3.4" }
-tide-disco = { git = "https://github.com/EspressoSystems/tide-disco.git", tag = "v0.4.6" }
+tide-disco = { git = "https://github.com/EspressoSystems/tide-disco.git", tag = "v0.5.0" }
 toml = "0.8"
+versioned-binary-serialization = { git = "https://github.com/EspressoSystems/versioned-binary-serialization.git", tag = "0.1.2" }
diff --git a/src/api.rs b/src/api.rs
index 66058b2..62f2edf 100644
--- a/src/api.rs
+++ b/src/api.rs
@@ -14,12 +14,13 @@ use std::fs;
 use std::path::Path;
 use tide_disco::api::{Api, ApiError};
 use toml::{map::Entry, Value};
+use versioned_binary_serialization::version::StaticVersionType;
 
-pub(crate) fn load_api<State, Error>(
+pub(crate) fn load_api<State, Error, Ver: StaticVersionType>(
     path: Option<impl AsRef<Path>>,
     default: &str,
     extensions: impl IntoIterator<Item = Value>,
-) -> Result<Api<State, Error>, ApiError> {
+) -> Result<Api<State, Error, Ver>, ApiError> {
     let mut toml = match path {
         Some(path) => load_toml(path.as_ref())?,
         None => toml::from_str(default).map_err(|err| ApiError::CannotReadToml {
diff --git a/src/builder.rs b/src/builder.rs
index 6cfd65a..2302667 100644
--- a/src/builder.rs
+++ b/src/builder.rs
@@ -15,6 +15,7 @@ use tide_disco::{
     method::{ReadState, WriteState},
     Api, RequestError, StatusCode,
 };
+use versioned_binary_serialization::version::StaticVersionType;
 
 use crate::{
     api::load_api,
@@ -108,7 +109,9 @@ impl tide_disco::error::Error for Error {
     }
 }
 
-pub fn define_api<State, Types: NodeType>(options: &Options) -> Result<Api<State, Error>, ApiError>
+pub fn define_api<State, Types: NodeType, Ver: StaticVersionType + 'static>(
+    options: &Options,
+) -> Result<Api<State, Error, Ver>, ApiError>
 where
     State: 'static + Send + Sync + ReadState,
     <State as ReadState>::State: Send + Sync + BuilderDataSource<Types>,
@@ -119,7 +122,7 @@ where
         &'a TaggedBase64,
     >>::Error: Display,
 {
-    let mut api = load_api::<State, Error>(
+    let mut api = load_api::<State, Error, Ver>(
         options.api_path.as_ref(),
         include_str!("../api/builder.toml"),
         options.extensions.clone(),
@@ -166,13 +169,15 @@ where
     Ok(api)
 }
 
-pub fn submit_api<State, Types: NodeType>(options: &Options) -> Result<Api<State, Error>, ApiError>
+pub fn submit_api<State, Types: NodeType, Ver: StaticVersionType + 'static>(
+    options: &Options,
+) -> Result<Api<State, Error, Ver>, ApiError>
 where
     State: 'static + Send + Sync + WriteState,
     <State as ReadState>::State: Send + Sync + AcceptsTxnSubmits<Types>,
     Types: NodeType,
 {
-    let mut api = load_api::<State, Error>(
+    let mut api = load_api::<State, Error, Ver>(
         options.api_path.as_ref(),
         include_str!("../api/submit.toml"),
         options.extensions.clone(),
@@ -181,7 +186,7 @@ where
         .post("submit_txn", |req, state| {
             async move {
                 let tx = req
-                    .body_auto::<<Types as NodeType>::Transaction>()
+                    .body_auto::<<Types as NodeType>::Transaction, Ver>(Ver::instance())
                     .context(TxnUnpackSnafu)?;
                 state.submit_txn(tx).await.context(TxnSubmitSnafu)?;
                 Ok(())