diff --git a/Cargo.lock b/Cargo.lock
index 9d923d06..6b965eb6 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -2,6 +2,21 @@
 # It is not intended for manual editing.
 version = 4
 
+[[package]]
+name = "addr2line"
+version = "0.24.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "dfbe277e56a376000877090da837660b4427aad530e3028d44e0bffe4f89a1c1"
+dependencies = [
+ "gimli",
+]
+
+[[package]]
+name = "adler2"
+version = "2.0.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "512761e0bb2578dd7380c6baaa0f4ce03e84f95e960231d1dec8bf4d7d6e2627"
+
 [[package]]
 name = "ahash"
 version = "0.8.12"
@@ -28,9 +43,9 @@ checksum = "e16d2d3311acee920a9eb8d33b8cbc1787ce4a264e85f964c2404b969bdcd487"
 
 [[package]]
 name = "ark-bls12-381"
-version = "0.4.0"
+version = "0.5.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c775f0d12169cba7aae4caeb547bb6a50781c7449a8aa53793827c9ec4abf488"
+checksum = "3df4dcc01ff89867cd86b0da835f23c3f02738353aaee7dde7495af71363b8d5"
 dependencies = [
  "ark-ec",
  "ark-ff",
@@ -40,17 +55,21 @@ dependencies = [
 
 [[package]]
 name = "ark-ec"
-version = "0.4.2"
+version = "0.5.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "defd9a439d56ac24968cca0571f598a61bc8c55f71d50a89cda591cb750670ba"
+checksum = "43d68f2d516162846c1238e755a7c4d131b892b70cc70c471a8e3ca3ed818fce"
 dependencies = [
+ "ahash",
  "ark-ff",
  "ark-poly",
  "ark-serialize",
  "ark-std",
- "derivative",
- "hashbrown 0.13.2",
- "itertools 0.10.5",
+ "educe",
+ "fnv",
+ "hashbrown 0.15.3",
+ "itertools 0.13.0",
+ "num-bigint",
+ "num-integer",
  "num-traits",
  "rayon",
  "zeroize",
@@ -58,101 +77,126 @@ dependencies = [
 
 [[package]]
 name = "ark-ff"
-version = "0.4.2"
+version = "0.5.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ec847af850f44ad29048935519032c33da8aa03340876d351dfab5660d2966ba"
+checksum = "a177aba0ed1e0fbb62aa9f6d0502e9b46dad8c2eab04c14258a1212d2557ea70"
 dependencies = [
  "ark-ff-asm",
  "ark-ff-macros",
  "ark-serialize",
  "ark-std",
- "derivative",
+ "arrayvec",
  "digest",
- "itertools 0.10.5",
+ "educe",
+ "itertools 0.13.0",
  "num-bigint",
  "num-traits",
  "paste",
  "rayon",
- "rustc_version",
  "zeroize",
 ]
 
 [[package]]
 name = "ark-ff-asm"
-version = "0.4.2"
+version = "0.5.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "3ed4aa4fe255d0bc6d79373f7e31d2ea147bcf486cba1be5ba7ea85abdb92348"
+checksum = "62945a2f7e6de02a31fe400aa489f0e0f5b2502e69f95f853adb82a96c7a6b60"
 dependencies = [
  "quote",
- "syn 1.0.109",
+ "syn 2.0.101",
 ]
 
 [[package]]
 name = "ark-ff-macros"
-version = "0.4.2"
+version = "0.5.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "7abe79b0e4288889c4574159ab790824d0033b9fdcb2a112a3182fac2e514565"
+checksum = "09be120733ee33f7693ceaa202ca41accd5653b779563608f1234f78ae07c4b3"
 dependencies = [
  "num-bigint",
  "num-traits",
  "proc-macro2",
  "quote",
- "syn 1.0.109",
+ "syn 2.0.101",
 ]
 
 [[package]]
 name = "ark-poly"
-version = "0.4.2"
+version = "0.5.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d320bfc44ee185d899ccbadfa8bc31aab923ce1558716e1997a1e74057fe86bf"
+checksum = "579305839da207f02b89cd1679e50e67b4331e2f9294a57693e5051b7703fe27"
 dependencies = [
+ "ahash",
  "ark-ff",
  "ark-serialize",
  "ark-std",
- "derivative",
- "hashbrown 0.13.2",
+ "educe",
+ "fnv",
+ "hashbrown 0.15.3",
 ]
 
 [[package]]
 name = "ark-serialize"
-version = "0.4.2"
+version = "0.5.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "adb7b85a02b83d2f22f89bd5cac66c9c89474240cb6207cb1efc16d098e822a5"
+checksum = "3f4d068aaf107ebcd7dfb52bc748f8030e0fc930ac8e360146ca54c1203088f7"
 dependencies = [
  "ark-serialize-derive",
  "ark-std",
+ "arrayvec",
  "digest",
  "num-bigint",
+ "rayon",
 ]
 
 [[package]]
 name = "ark-serialize-derive"
-version = "0.4.2"
+version = "0.5.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ae3281bc6d0fd7e549af32b52511e1302185bd688fd3359fa36423346ff682ea"
+checksum = "213888f660fddcca0d257e88e54ac05bca01885f258ccdf695bafd77031bb69d"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 1.0.109",
+ "syn 2.0.101",
 ]
 
 [[package]]
 name = "ark-std"
-version = "0.4.0"
+version = "0.5.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "94893f1e0c6eeab764ade8dc4c0db24caf4fe7cbbaafc0eba0a9030f447b5185"
+checksum = "246a225cc6131e9ee4f24619af0f19d67761fff15d7ccc22e42b80846e69449a"
 dependencies = [
  "num-traits",
  "rand",
  "rayon",
 ]
 
+[[package]]
+name = "arrayvec"
+version = "0.7.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "7c02d123df017efcdfbd739ef81735b36c5ba83ec3c59c80a9d7ecc718f92e50"
+
 [[package]]
 name = "autocfg"
 version = "1.4.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "ace50bade8e6234aa140d9a2f552bbee1db4d353f69b8217bc503490fc1a9f26"
 
+[[package]]
+name = "backtrace"
+version = "0.3.74"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8d82cb332cdfaed17ae235a638438ac4d4839913cc2af585c3c6746e8f8bee1a"
+dependencies = [
+ "addr2line",
+ "cfg-if",
+ "libc",
+ "miniz_oxide",
+ "object",
+ "rustc-demangle",
+ "windows-targets",
+]
+
 [[package]]
 name = "base16ct"
 version = "0.2.0"
@@ -227,15 +271,15 @@ dependencies = [
 
 [[package]]
 name = "cosmwasm-core"
-version = "2.2.2"
+version = "3.0.0-rc.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "35b6dc17e7fd89d0a0a58f12ef33f0bbdf09a6a14c3dfb383eae665e5889250e"
+checksum = "10492ce426180bb1a84d056cef0a38c82bce63b4ee333ac689807d418d74d5a9"
 
 [[package]]
 name = "cosmwasm-crypto"
-version = "2.2.2"
+version = "3.0.0-rc.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "aa2f53285517db3e33d825b3e46301efe845135778527e1295154413b2f0469e"
+checksum = "383f3314a0b39f3e926bbbfb3c3fc5d86bb832adc445c29525c9d7ce249e946f"
 dependencies = [
  "ark-bls12-381",
  "ark-ec",
@@ -247,6 +291,7 @@ dependencies = [
  "ecdsa",
  "ed25519-zebra",
  "k256",
+ "num-bigint",
  "num-traits",
  "p256",
  "rand_core",
@@ -257,9 +302,9 @@ dependencies = [
 
 [[package]]
 name = "cosmwasm-derive"
-version = "2.2.2"
+version = "3.0.0-rc.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a782b93fae93e57ca8ad3e9e994e784583f5933aeaaa5c80a545c4b437be2047"
+checksum = "dac4e791098c89ad6e2b3828f77334906f12f7ea58846406a2562c6daf984c1f"
 dependencies = [
  "proc-macro2",
  "quote",
@@ -268,9 +313,9 @@ dependencies = [
 
 [[package]]
 name = "cosmwasm-schema"
-version = "2.2.2"
+version = "3.0.0-rc.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "6984ab21b47a096e17ae4c73cea2123a704d4b6686c39421247ad67020d76f95"
+checksum = "a5f3bb8f36b6d520a4c529249be471d1fa18cef460cea66f430af6094c13efe2"
 dependencies = [
  "cosmwasm-schema-derive",
  "schemars",
@@ -281,9 +326,9 @@ dependencies = [
 
 [[package]]
 name = "cosmwasm-schema-derive"
-version = "2.2.2"
+version = "3.0.0-rc.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e01c9214319017f6ebd8e299036e1f717fa9bb6724e758f7d6fb2477599d1a29"
+checksum = "209f03994e18ba5de1b07fcd607acefc6587c24263d117f6d1fb10c471222d4c"
 dependencies = [
  "proc-macro2",
  "quote",
@@ -292,9 +337,9 @@ dependencies = [
 
 [[package]]
 name = "cosmwasm-std"
-version = "2.2.2"
+version = "3.0.0-rc.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "bf82335c14bd94eeb4d3c461b7aa419ecd7ea13c2efe24b97cd972bdb8044e7d"
+checksum = "c2a509852d24b93d7a808d638c9509e7bd3119895adaddf764f0090d10a7ad6c"
 dependencies = [
  "base64",
  "bech32",
@@ -308,7 +353,7 @@ dependencies = [
  "rmp-serde",
  "schemars",
  "serde",
- "serde-json-wasm",
+ "serde_json",
  "sha2",
  "static_assertions",
  "thiserror 1.0.69",
@@ -399,11 +444,12 @@ dependencies = [
 
 [[package]]
 name = "cw-multi-test"
-version = "2.4.0"
+version = "3.0.0-rc.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "1dbb5533fff9a5c3d78c963f4f97a01f485062af5f00458fd4ec97bc4669a32a"
+checksum = "8272912061e29b9ffba740807663c8a6f3b4853ad71a1b31af2f87390de59625"
 dependencies = [
  "anyhow",
+ "backtrace",
  "bech32",
  "cosmwasm-schema",
  "cosmwasm-std",
@@ -419,9 +465,9 @@ dependencies = [
 
 [[package]]
 name = "cw-storage-plus"
-version = "2.0.0"
+version = "3.0.0-rc.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f13360e9007f51998d42b1bc6b7fa0141f74feae61ed5fd1e5b0a89eec7b5de1"
+checksum = "9d5dfef8c232811e438fc6413c452eaef5e2f1d5c8a2d55ae18329744a8c28f0"
 dependencies = [
  "cosmwasm-std",
  "schemars",
@@ -430,15 +476,15 @@ dependencies = [
 
 [[package]]
 name = "cw-utils"
-version = "2.0.0"
+version = "3.0.0-rc.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "07dfee7f12f802431a856984a32bce1cb7da1e6c006b5409e3981035ce562dec"
+checksum = "4b7c16a6188df881f99f5720642f3c4971f6ceb335a78e2beeb4fee4c5bb93eb"
 dependencies = [
  "cosmwasm-schema",
  "cosmwasm-std",
  "schemars",
  "serde",
- "thiserror 1.0.69",
+ "thiserror 2.0.12",
 ]
 
 [[package]]
@@ -451,31 +497,20 @@ dependencies = [
  "zeroize",
 ]
 
-[[package]]
-name = "derivative"
-version = "2.2.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "fcc3dd5e9e9c0b295d6e1e4d811fb6f157d5ffd784b8d202fc62eac8035a770b"
-dependencies = [
- "proc-macro2",
- "quote",
- "syn 1.0.109",
-]
-
 [[package]]
 name = "derive_more"
-version = "1.0.0"
+version = "2.0.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "4a9b99b9cbbe49445b21764dc0625032a89b145a2642e67603e1c936f5458d05"
+checksum = "093242cf7570c207c83073cf82f79706fe7b8317e98620a47d5be7c3d8497678"
 dependencies = [
  "derive_more-impl",
 ]
 
 [[package]]
 name = "derive_more-impl"
-version = "1.0.0"
+version = "2.0.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "cb7330aeadfbe296029522e6c40f315320aba36fc43a5b3632f3795348f3bd22"
+checksum = "bda628edc44c4bb645fbe0f758797143e4e07926f7ebf4e9bdfbd3d2ce621df3"
 dependencies = [
  "proc-macro2",
  "quote",
@@ -538,6 +573,18 @@ dependencies = [
  "zeroize",
 ]
 
+[[package]]
+name = "educe"
+version = "0.6.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1d7bc049e1bd8cdeb31b68bbd586a9464ecf9f3944af3958a7a9d0f8b9799417"
+dependencies = [
+ "enum-ordinalize",
+ "proc-macro2",
+ "quote",
+ "syn 2.0.101",
+]
+
 [[package]]
 name = "either"
 version = "1.15.0"
@@ -562,6 +609,26 @@ dependencies = [
  "zeroize",
 ]
 
+[[package]]
+name = "enum-ordinalize"
+version = "4.3.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "fea0dcfa4e54eeb516fe454635a95753ddd39acda650ce703031c6973e315dd5"
+dependencies = [
+ "enum-ordinalize-derive",
+]
+
+[[package]]
+name = "enum-ordinalize-derive"
+version = "4.3.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "0d28318a75d4aead5c4db25382e8ef717932d0346600cacae6357eb5941bc5ff"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn 2.0.101",
+]
+
 [[package]]
 name = "equivalent"
 version = "1.0.2"
@@ -584,6 +651,12 @@ version = "0.2.9"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "28dea519a9695b9977216879a3ebfddf92f1c08c05d984f8996aecd6ecdc811d"
 
+[[package]]
+name = "fnv"
+version = "1.0.7"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "3f9eec918d3f24069decb9af1554cad7c880e2da24a9afd88aca000531ab82c1"
+
 [[package]]
 name = "generic-array"
 version = "0.14.7"
@@ -606,6 +679,12 @@ dependencies = [
  "wasi",
 ]
 
+[[package]]
+name = "gimli"
+version = "0.31.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "07e28edb80900c19c28f1072f2e8aeca7fa06b23cd4169cefe1af5aa3260783f"
+
 [[package]]
 name = "glob"
 version = "0.3.2"
@@ -623,15 +702,6 @@ dependencies = [
  "subtle",
 ]
 
-[[package]]
-name = "hashbrown"
-version = "0.13.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "43a3c133739dddd0d2990f9a4bdf8eb4b21ef50e4851ca85ab661199821d510e"
-dependencies = [
- "ahash",
-]
-
 [[package]]
 name = "hashbrown"
 version = "0.14.5"
@@ -647,6 +717,9 @@ name = "hashbrown"
 version = "0.15.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "84b26c544d002229e640969970a2e74021aadf6e2f96372b9c58eff97de08eb3"
+dependencies = [
+ "allocator-api2",
+]
 
 [[package]]
 name = "hex"
@@ -675,9 +748,9 @@ dependencies = [
 
 [[package]]
 name = "itertools"
-version = "0.10.5"
+version = "0.13.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b0fd2260e829bddf4cb6ea802289de2f86d6a7a690192fbe91b3f46e0f2c8473"
+checksum = "413ee7dfc52ee1a4949ceeb7dbc8a33f2d6c088194d9f922fb8318faf1f01186"
 dependencies = [
  "either",
 ]
@@ -748,6 +821,15 @@ version = "2.7.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "78ca9ab1a0babb1e7d5695e3530886289c18cf2f87ec19a575a0abdce112e3a3"
 
+[[package]]
+name = "miniz_oxide"
+version = "0.8.8"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "3be647b768db090acb35d5ec5db2b0e1f1de11133ca123b9eacf5137868f892a"
+dependencies = [
+ "adler2",
+]
+
 [[package]]
 name = "num-bigint"
 version = "0.4.6"
@@ -776,6 +858,15 @@ dependencies = [
  "autocfg",
 ]
 
+[[package]]
+name = "object"
+version = "0.36.7"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "62948e14d923ea95ea2c7c86c71013138b66525b86bdc08d2dcc262bdb497b87"
+dependencies = [
+ "memchr",
+]
+
 [[package]]
 name = "once_cell"
 version = "1.21.3"
@@ -973,6 +1064,12 @@ dependencies = [
  "serde",
 ]
 
+[[package]]
+name = "rustc-demangle"
+version = "0.1.24"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "719b953e2095829ee67db738b3bfa9fa368c94900df327b3f07fe6e794d2fe1f"
+
 [[package]]
 name = "rustc_version"
 version = "0.4.1"
@@ -1136,7 +1233,7 @@ checksum = "13c2bddecc57b384dee18652358fb23172facb8a2c51ccc10d74c157bdea3292"
 
 [[package]]
 name = "sylvia"
-version = "1.3.6"
+version = "2.0.0-rc.0"
 dependencies = [
  "anyhow",
  "cosmwasm-schema",
@@ -1157,7 +1254,7 @@ dependencies = [
 
 [[package]]
 name = "sylvia-derive"
-version = "1.3.6"
+version = "2.0.0-rc.0"
 dependencies = [
  "convert_case",
  "cosmwasm-schema",
@@ -1195,7 +1292,6 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "72b64191b275b66ffe2469e8af2c1cfe3bafa67b529ead792a6d0160888b4237"
 dependencies = [
  "proc-macro2",
- "quote",
  "unicode-ident",
 ]
 
diff --git a/Cargo.toml b/Cargo.toml
index a418d8bb..420a1a08 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -4,18 +4,18 @@ exclude = ["examples/*"]
 resolver = "2"
 
 [workspace.package]
-version = "1.3.6"
+version = "2.0.0-rc.0"
 
 [workspace.dependencies]
 anyhow = "1.0.98"
-cosmwasm-schema = "2.2.2"
-cosmwasm-std = "2.2.2"
-cw-multi-test = "2.4.0"
-cw-storage-plus = "2.0.0"
-cw-utils = "2.0.0"
+cosmwasm-schema = "3.0.0-rc.0"
+cosmwasm-std = "3.0.0-rc.0"
+cw-multi-test = "3.0.0-rc.0"
+cw-storage-plus = "3.0.0-rc.0"
+cw-utils = "3.0.0-rc.0"
 schemars = "0.8.22"
 serde = { version = "1.0.219", default-features = false, features = ["derive"] }
-sylvia-derive = { version = "1.3.6", path = "sylvia-derive" }
+sylvia-derive = { version = "2.0.0-rc.0", path = "sylvia-derive" }
 thiserror = "2.0.12"
 
 [workspace.metadata.docs.rs]
diff --git a/sylvia/src/types.rs b/sylvia/src/types.rs
index db5d5d7f..aafccc59 100644
--- a/sylvia/src/types.rs
+++ b/sylvia/src/types.rs
@@ -597,9 +597,9 @@ impl<'a, C: cosmwasm_std::CustomQuery> From<(DepsMut<'a, C>, Env)> for SudoCtx<'
 }
 
 /// Set of trait bounds for custom messages.
-pub trait CustomMsg: cosmwasm_std::CustomMsg + DeserializeOwned {}
+pub trait CustomMsg: cosmwasm_std::CustomMsg + DeserializeOwned + JsonSchema {}
 
-impl<T> CustomMsg for T where T: cosmwasm_std::CustomMsg + DeserializeOwned {}
+impl<T> CustomMsg for T where T: cosmwasm_std::CustomMsg + DeserializeOwned + JsonSchema {}
 
 /// Set of trait bounds for custom queries.
 pub trait CustomQuery: cosmwasm_std::CustomQuery + DeserializeOwned + JsonSchema {}
diff --git a/sylvia/tests/reply_data.rs b/sylvia/tests/reply_data.rs
index ca822c5c..f3885aec 100644
--- a/sylvia/tests/reply_data.rs
+++ b/sylvia/tests/reply_data.rs
@@ -338,7 +338,7 @@ fn data_opt() {
     assert_eq!(
         err,
         StdError::generic_err(
-            "Invalid reply data at block height: 12345, transaction id: 0.\nSerde error while deserializing Error parsing into type alloc::string::String: Invalid type"
+            "Invalid reply data at block height: 12345, transaction id: 0.\nSerde error while deserializing Error parsing into type alloc::string::String: expected value at line 1 column 1"
         ).into()
     );
 
@@ -382,7 +382,7 @@ fn data() {
     assert_eq!(
         err,
         StdError::generic_err(
-            "Invalid reply data at block height: 12345, transaction id: 0.\nSerde error while deserializing Error parsing into type alloc::string::String: Invalid type"
+            "Invalid reply data at block height: 12345, transaction id: 0.\nSerde error while deserializing Error parsing into type alloc::string::String: expected value at line 1 column 1"
         ).into()
     );