diff --git a/.github/workflows/build-and-test.yaml b/.github/workflows/build-and-test.yaml
index 2ccf1be..e77ea7e 100644
--- a/.github/workflows/build-and-test.yaml
+++ b/.github/workflows/build-and-test.yaml
@@ -16,7 +16,7 @@ env:
   RUST_TOOLCHAIN: nightly-2025-10-23
   NODE_VERSION: 20
   NPM_VERSION: 11.5.1
-  WASM_PACK_VERSION: 0.13.1
+  WASM_PACK_VERSION: 0.14.0
   WASM_OPT_VERSION: 0.116.1
 
 jobs:
diff --git a/packages/wasm-utxo/Cargo.lock b/packages/wasm-utxo/Cargo.lock
index eecb6c6..238f384 100644
--- a/packages/wasm-utxo/Cargo.lock
+++ b/packages/wasm-utxo/Cargo.lock
@@ -1533,9 +1533,9 @@ checksum = "4a5f13b858c8d314ee3e8f639011f7ccefe71f97f96e50151fb991f267928e2c"
 
 [[package]]
 name = "js-sys"
-version = "0.3.83"
+version = "0.3.85"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "464a3709c7f55f1f721e5389aa6ea4e3bc6aba669353300af094b29ffbdde1d8"
+checksum = "8c942ebf8e95485ca0d52d97da7c5a2c387d0e7f0ba4c35e93bfcaee045955b3"
 dependencies = [
  "once_cell",
  "wasm-bindgen",
@@ -3047,9 +3047,9 @@ dependencies = [
 
 [[package]]
 name = "wasm-bindgen"
-version = "0.2.106"
+version = "0.2.108"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "0d759f433fa64a2d763d1340820e46e111a7a5ab75f993d1852d70b03dbb80fd"
+checksum = "64024a30ec1e37399cf85a7ffefebdb72205ca1c972291c51512360d90bd8566"
 dependencies = [
  "cfg-if",
  "once_cell",
@@ -3060,11 +3060,12 @@ dependencies = [
 
 [[package]]
 name = "wasm-bindgen-futures"
-version = "0.4.56"
+version = "0.4.58"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "836d9622d604feee9e5de25ac10e3ea5f2d65b41eac0d9ce72eb5deae707ce7c"
+checksum = "70a6e77fd0ae8029c9ea0063f87c46fde723e7d887703d74ad2616d792e51e6f"
 dependencies = [
  "cfg-if",
+ "futures-util",
  "js-sys",
  "once_cell",
  "wasm-bindgen",
@@ -3073,9 +3074,9 @@ dependencies = [
 
 [[package]]
 name = "wasm-bindgen-macro"
-version = "0.2.106"
+version = "0.2.108"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "48cb0d2638f8baedbc542ed444afc0644a29166f1595371af4fecf8ce1e7eeb3"
+checksum = "008b239d9c740232e71bd39e8ef6429d27097518b6b30bdf9086833bd5b6d608"
 dependencies = [
  "quote",
  "wasm-bindgen-macro-support",
@@ -3083,9 +3084,9 @@ dependencies = [
 
 [[package]]
 name = "wasm-bindgen-macro-support"
-version = "0.2.106"
+version = "0.2.108"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "cefb59d5cd5f92d9dcf80e4683949f15ca4b511f4ac0a6e14d4e1ac60c6ecd40"
+checksum = "5256bae2d58f54820e6490f9839c49780dff84c65aeab9e772f15d5f0e913a55"
 dependencies = [
  "bumpalo",
  "proc-macro2",
@@ -3096,18 +3097,18 @@ dependencies = [
 
 [[package]]
 name = "wasm-bindgen-shared"
-version = "0.2.106"
+version = "0.2.108"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "cbc538057e648b67f72a982e708d485b2efa771e1ac05fec311f9f63e5800db4"
+checksum = "1f01b580c9ac74c8d8f0c0e4afb04eeef2acf145458e52c03845ee9cd23e3d12"
 dependencies = [
  "unicode-ident",
 ]
 
 [[package]]
 name = "wasm-bindgen-test"
-version = "0.3.56"
+version = "0.3.58"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "25e90e66d265d3a1efc0e72a54809ab90b9c0c515915c67cdf658689d2c22c6c"
+checksum = "45649196a53b0b7a15101d845d44d2dda7374fc1b5b5e2bbf58b7577ff4b346d"
 dependencies = [
  "async-trait",
  "cast",
@@ -3122,19 +3123,26 @@ dependencies = [
  "wasm-bindgen",
  "wasm-bindgen-futures",
  "wasm-bindgen-test-macro",
+ "wasm-bindgen-test-shared",
 ]
 
 [[package]]
 name = "wasm-bindgen-test-macro"
-version = "0.3.56"
+version = "0.3.58"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "7150335716dce6028bead2b848e72f47b45e7b9422f64cccdc23bedca89affc1"
+checksum = "f579cdd0123ac74b94e1a4a72bd963cf30ebac343f2df347da0b8df24cdebed2"
 dependencies = [
  "proc-macro2",
  "quote",
  "syn",
 ]
 
+[[package]]
+name = "wasm-bindgen-test-shared"
+version = "0.2.108"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a8145dd1593bf0fb137dbfa85b8be79ec560a447298955877804640e40c2d6ea"
+
 [[package]]
 name = "wasm-utxo"
 version = "0.1.0"
@@ -3173,9 +3181,9 @@ dependencies = [
 
 [[package]]
 name = "web-sys"
-version = "0.3.83"
+version = "0.3.85"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "9b32828d774c412041098d182a8b38b16ea816958e07cf40eec2bc080ae137ac"
+checksum = "312e32e551d92129218ea9a2452120f4aabc03529ef03e4d0d82fb2780608598"
 dependencies = [
  "js-sys",
  "wasm-bindgen",
@@ -3601,9 +3609,9 @@ dependencies = [
 
 [[package]]
 name = "zebra-chain"
-version = "3.1.0"
+version = "4.0.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "6b4aa7e85afd7bdf159e8c9a973d32bfc410be42ce82c2396690ae1208933bb8"
+checksum = "3b41d733382b3ecbf892f816ab9c1e448c9ae868d2bbb9f12a55b80c4e21fee2"
 dependencies = [
  "bech32",
  "bitflags",
diff --git a/packages/wasm-utxo/Cargo.toml b/packages/wasm-utxo/Cargo.toml
index 469a0d8..eae3502 100644
--- a/packages/wasm-utxo/Cargo.toml
+++ b/packages/wasm-utxo/Cargo.toml
@@ -32,7 +32,7 @@ rstest = "0.26.1"
 pastey = "0.1"
 
 [target.'cfg(not(target_arch = "wasm32"))'.dev-dependencies]
-zebra-chain = { version = "3.1", default-features = false }
+zebra-chain = { version = "4.0", default-features = false }
 
 [build-dependencies]
 serde_json = "1.0"
diff --git a/packages/wasm-utxo/Dockerfile b/packages/wasm-utxo/Dockerfile
index caef1a0..a0652d8 100644
--- a/packages/wasm-utxo/Dockerfile
+++ b/packages/wasm-utxo/Dockerfile
@@ -6,7 +6,7 @@ RUN curl https://sh.rustup.rs -sSf | sh -s -- -y
 ENV PATH="/root/.cargo/bin:${PATH}"
 
 # Install wasm-pack
-RUN cargo install wasm-pack
+RUN cargo install wasm-pack --version 0.14.0
 
 # Install clang and binaryen (provides wasm-opt)
 RUN apt-get update && apt-get install -y clang binaryen