diff --git a/.claude/CLAUDE.md b/.claude/CLAUDE.md
index d50cf2ca..7e20c6f2 100644
--- a/.claude/CLAUDE.md
+++ b/.claude/CLAUDE.md
@@ -2,7 +2,7 @@
 
 ## Crate Summary
 
-Single-crate Rust application (not a workspace) that builds Signet rollup blocks. Actor-based async task system: watches host/rollup chains, ingests transactions and bundles, simulates them against rollup state, then submits valid blocks to Ethereum as EIP-4844 blob transactions via Flashbots. Built on alloy, trevm, tokio, and the `signet-*` SDK crates. Binary: `zenith-builder-example`. Minimum Rust 1.88, Edition 2024.
+Single-crate Rust application (not a workspace) that builds Signet rollup blocks. Actor-based async task system: watches host/rollup chains, ingests transactions and bundles, simulates them against rollup state, then submits valid blocks to Ethereum as EIP-4844 blob transactions via Flashbots. Built on alloy, trevm, tokio, and the `signet-*` SDK crates. Binary: `zenith-builder-example`. Minimum Rust 1.92, Edition 2024.
 
 ## Build Commands
 
diff --git a/.github/workflows/rust-ci.yml b/.github/workflows/rust-ci.yml
index 1da3ef16..c36b129a 100644
--- a/.github/workflows/rust-ci.yml
+++ b/.github/workflows/rust-ci.yml
@@ -9,5 +9,5 @@ jobs:
   rust-base:
     uses: init4tech/actions/.github/workflows/rust-base.yml@main
     with:
-      install-foundry: true
+      install-foundry: false
       test-all-features: false
diff --git a/Cargo.lock b/Cargo.lock
index 217e298e..189572f6 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -1963,7 +1963,7 @@ dependencies = [
 
 [[package]]
 name = "builder"
-version = "1.2.0"
+version = "2.0.0"
 dependencies = [
  "alloy",
  "alloy-chains",
@@ -3553,9 +3553,9 @@ dependencies = [
 
 [[package]]
 name = "init4-bin-base"
-version = "0.21.0"
+version = "0.23.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "750f93023d2b79b1e26164e495a13510c04adf39220a76161534b1f2ebfefb47"
+checksum = "5ab5107dc68cc10d1cc74abe47e5490df2a4d2ec0db8f3b25f13acef2a6b1a16"
 dependencies = [
  "alloy",
  "async-trait",
@@ -5954,9 +5954,9 @@ dependencies = [
 
 [[package]]
 name = "signet-bundle"
-version = "0.18.0"
+version = "0.19.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "1bafc9f47f2ad9e1dccf66f3a6bd8f71bf8ff60c8ea8dd1acfa2c1075af403fa"
+checksum = "3dce158c5f71b2debf53edf20ef792b472aeef743a09a2a725cb6747343eec35"
 dependencies = [
  "alloy",
  "serde",
@@ -5970,9 +5970,9 @@ dependencies = [
 
 [[package]]
 name = "signet-constants"
-version = "0.18.0"
+version = "0.19.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "0d0cc668a4c95c16a6400b669224ffda7dd2ede0a35a26621152f40ae4eaa7e5"
+checksum = "c0d77fc64cea008e81eb4444227bf3de17cc6ed5eb391f84dc8cbf90673abe88"
 dependencies = [
  "alloy",
  "serde",
@@ -5982,9 +5982,9 @@ dependencies = [
 
 [[package]]
 name = "signet-evm"
-version = "0.18.0"
+version = "0.19.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "00af2bd72925c5908ee9c46b0eea14469995e14d195bd4ebebb6d72d0020b6cc"
+checksum = "09692691cefd2ed41e831c31b07b92b0b948d492c489754629dd0c016532375f"
 dependencies = [
  "alloy",
  "bitflags",
@@ -5999,9 +5999,9 @@ dependencies = [
 
 [[package]]
 name = "signet-extract"
-version = "0.18.0"
+version = "0.19.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ec1297a8e52d12bab8482b84d3e0dfccf7829935f25d4f197c51f91fbf2d6f7d"
+checksum = "c0887b4cb48ecb0228675a0054f6e3dc69ac238c5a03953530e4301991abb6d1"
 dependencies = [
  "alloy",
  "signet-types",
@@ -6011,9 +6011,9 @@ dependencies = [
 
 [[package]]
 name = "signet-genesis"
-version = "0.18.0"
+version = "0.19.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ad55ffbe0c9553d251802ac98e266b28e93bf5a0052aa5e7a58e79c59241e841"
+checksum = "21257ac398c6682f0055c4ee884ee84be654ff85c3a2a4c4b85081ac641806eb"
 dependencies = [
  "alloy",
  "init4-bin-base",
@@ -6026,9 +6026,9 @@ dependencies = [
 
 [[package]]
 name = "signet-journal"
-version = "0.18.0"
+version = "0.19.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "790304d2a99fd4e8baef20a452c52e835a790173cd02f18ba5bb2674cb1f01f2"
+checksum = "affbb6e3ee8cdd94eca7e54148d6ce13d0b42de0eeca92cd6cafee3e7a4ced77"
 dependencies = [
  "alloy",
  "futures-util",
@@ -6038,9 +6038,9 @@ dependencies = [
 
 [[package]]
 name = "signet-sim"
-version = "0.18.0"
+version = "0.19.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a159ddefa0d6aeb596805abb6b1308fc76c9aba72518ab93581a0d095226a5a4"
+checksum = "d2dee2fefdcb8bd863335102b77ec982605e3303e095c92dcd44fac68d893760"
 dependencies = [
  "alloy",
  "lru",
@@ -6057,9 +6057,9 @@ dependencies = [
 
 [[package]]
 name = "signet-tx-cache"
-version = "0.18.0"
+version = "0.19.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "23cede3766494e2958687c3daba14d02fb84f35ff72e60aa22c1c9187e5e161d"
+checksum = "41d56cca1146acae435adf991323e81fa0704b3e39ef830ab249354558cb9661"
 dependencies = [
  "alloy",
  "eventsource-stream",
@@ -6078,9 +6078,9 @@ dependencies = [
 
 [[package]]
 name = "signet-types"
-version = "0.18.0"
+version = "0.19.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "99ab5ab70ee9fae53178c8ecf52e768226c93842b2c9826c773b0aeceaa618d3"
+checksum = "06c7324022e5a0958717d682f17b9c54748ce2d936134ba5a1457bfcbe4568ef"
 dependencies = [
  "alloy",
  "chrono",
@@ -6092,9 +6092,9 @@ dependencies = [
 
 [[package]]
 name = "signet-zenith"
-version = "0.18.0"
+version = "0.19.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "8dbe24b7cabf762735fad690d913886ebf3ddcf679f3d680be08e582825ca6bc"
+checksum = "606a73c8975c90bdc33ca8180992559790912207525c3872760cbc9b93f9d3cb"
 dependencies = [
  "alloy",
  "alloy-core",
diff --git a/Cargo.toml b/Cargo.toml
index 3d47ad4d..b11bdf58 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,10 +1,10 @@
 [package]
 name = "builder"
-version = "1.2.0"
+version = "2.0.0"
 description = "signet builder example"
 
 edition = "2024"
-rust-version = "1.88"
+rust-version = "1.92"
 authors = ["init4"]
 license = "Apache-2.0 OR MIT"
 homepage = "https://github.com/init4tech/builder"
@@ -21,15 +21,15 @@ name = "zenith-builder-example"
 path = "bin/builder.rs"
 
 [dependencies]
-init4-bin-base = { version = "0.21.0", features = ["perms", "aws", "pylon", "sse"] }
+init4-bin-base = { version = "0.23.1", features = ["perms", "aws", "pylon", "sse"] }
 
-signet-constants = { version = "0.18.0" }
-signet-evm = { version = "0.18.0" }
-signet-sim = { version = "0.18.0" }
-signet-tx-cache = { version = "0.18.0" }
-signet-types = { version = "0.18.0" }
-signet-zenith = { version = "0.18.0" }
-signet-genesis = { version = "0.18.0" }
+signet-constants = "0.19.0"
+signet-evm = "0.19.0"
+signet-sim = "0.19.0"
+signet-tx-cache = "0.19.0"
+signet-types = "0.19.0"
+signet-zenith = "0.19.0"
+signet-genesis = "0.19.0"
 
 trevm = { version = "0.34.0", features = ["concurrent-db", "test-utils", "asyncdb"] }
 
@@ -68,7 +68,7 @@ alloy-hardforks = "0.4.0"
 alloy-chains = "0.2"
 criterion = { version = "0.8.2", features = ["async_tokio"] }
 metrics-util = "0.20"
-signet-bundle = "0.18.0"
+signet-bundle = "0.19.0"
 
 [[bench]]
 name = "sim"
@@ -88,3 +88,4 @@ required-features = ["test-utils"]
 # signet-tx-cache = { path = "../signet-sdk/crates/tx-cache" }
 # signet-bundle = { path = "../signet-sdk/crates/bundle" }
 # init4-bin-base = { path = "../bin-base" }
+
diff --git a/src/tasks/block/cfg.rs b/src/tasks/block/cfg.rs
index ac884631..bc0ffee1 100644
--- a/src/tasks/block/cfg.rs
+++ b/src/tasks/block/cfg.rs
@@ -1,10 +1,11 @@
 //! This file implements the [`trevm::Cfg`] and [`trevm::Block`] traits for Signet and host networks.
 use alloy::eips::eip7840::BlobParams;
 use reth_chainspec::{ChainSpec, EthChainSpec};
-use signet_constants::{mainnet, parmigiana};
+use signet_constants::{gouda, mainnet, parmigiana};
 use signet_evm::EthereumHardfork;
 use signet_genesis::{
-    MAINNET_GENESIS, MAINNET_HOST_GENESIS, PARMIGIANA_GENESIS, PARMIGIANA_HOST_GENESIS,
+    GOUDA_GENESIS, MAINNET_GENESIS, MAINNET_HOST_GENESIS, PARMIGIANA_GENESIS,
+    PARMIGIANA_HOST_GENESIS,
 };
 use std::sync::OnceLock;
 use trevm::revm::{
@@ -44,7 +45,7 @@ impl SignetCfgEnv {
     /// Returns a reference to the [`ChainSpec`] for the configured chain.
     fn chainspec(&self) -> &ChainSpec {
         match self.chain_id {
-            parmigiana::RU_CHAIN_ID | mainnet::RU_CHAIN_ID => {
+            parmigiana::RU_CHAIN_ID | gouda::RU_CHAIN_ID | mainnet::RU_CHAIN_ID => {
                 RU_CHAINSPEC.get_or_init(|| initialize_ru_chainspec(self.chain_id))
             }
             parmigiana::HOST_CHAIN_ID | mainnet::HOST_CHAIN_ID => {
@@ -82,6 +83,7 @@ impl trevm::Cfg for SignetCfgEnv {
 fn initialize_ru_chainspec(chain_id: u64) -> ChainSpec {
     match chain_id {
         parmigiana::RU_CHAIN_ID => ChainSpec::from_genesis(PARMIGIANA_GENESIS.to_owned()),
+        gouda::RU_CHAIN_ID => ChainSpec::from_genesis(GOUDA_GENESIS.to_owned()),
         mainnet::RU_CHAIN_ID => ChainSpec::from_genesis(MAINNET_GENESIS.to_owned()),
         _ => unimplemented!("Unknown rollup chain ID: {}", chain_id),
     }
@@ -109,4 +111,14 @@ mod tests {
         let cfg = SignetCfgEnv::new(NamedChain::Mainnet as u64, 0, MAINNET_OSAKA_TIMESTAMP);
         assert_eq!(cfg.spec_id(), SpecId::OSAKA);
     }
+
+    #[test]
+    fn gouda_cfg_env_does_not_panic() {
+        // Regression: gouda rollup chain id 792669 was missing from the chainspec
+        // match arm, causing `unimplemented!("Unknown chain ID: 792669")` at
+        // simulator startup. Confirm a SignetCfgEnv built with the gouda rollup
+        // chain id resolves to a real SpecId.
+        let cfg = SignetCfgEnv::new(gouda::RU_CHAIN_ID, 0, MAINNET_OSAKA_TIMESTAMP);
+        let _ = cfg.spec_id();
+    }
 }