diff --git a/app/onchain/Cargo.lock b/app/onchain/Cargo.lock
index ffb575a..c1e7499 100644
--- a/app/onchain/Cargo.lock
+++ b/app/onchain/Cargo.lock
@@ -24,6 +24,12 @@ dependencies = [
  "soroban-sdk",
 ]
 
+[[package]]
+name = "allocator-api2"
+version = "0.2.21"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "683d7910e743518b0e34f1186f92494becacb047c7b6bf616c96772180fef923"
+
 [[package]]
 name = "android_system_properties"
 version = "0.1.5"
@@ -44,9 +50,9 @@ dependencies = [
 
 [[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",
@@ -54,112 +60,136 @@ dependencies = [
  "ark-std",
 ]
 
+[[package]]
+name = "ark-bn254"
+version = "0.5.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d69eab57e8d2663efa5c63135b2af4f396d66424f88954c21104125ab6b3e6bc"
+dependencies = [
+ "ark-ec",
+ "ark-ff",
+ "ark-std",
+]
+
 [[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",
+ "educe",
+ "fnv",
+ "hashbrown 0.15.5",
  "itertools",
+ "num-bigint",
+ "num-integer",
  "num-traits",
  "zeroize",
 ]
 
 [[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",
+ "educe",
  "itertools",
  "num-bigint",
  "num-traits",
  "paste",
- "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",
 ]
 
 [[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",
 ]
 
 [[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 0.15.5",
 ]
 
 [[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",
 ]
 
 [[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",
 ]
 
 [[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",
 ]
 
+[[package]]
+name = "arrayvec"
+version = "0.7.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "7c02d123df017efcdfbd739ef81735b36c5ba83ec3c59c80a9d7ecc718f92e50"
+
 [[package]]
 name = "autocfg"
 version = "1.5.0"
@@ -199,6 +229,12 @@ version = "3.19.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "5dd9dc738b7a8311c7ade152424974d8115f2cdad61e8dab8dac9f2362298510"
 
+[[package]]
+name = "byteorder"
+version = "1.5.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1fd0f2584146f6f2ef48085050886acf353beff7305ebd1ae69500e27c67f64b"
+
 [[package]]
 name = "bytes-lit"
 version = "0.0.5"
@@ -208,7 +244,7 @@ dependencies = [
  "num-bigint",
  "proc-macro2",
  "quote",
- "syn 2.0.114",
+ "syn",
 ]
 
 [[package]]
@@ -235,7 +271,7 @@ checksum = "45565fc9416b9896014f5732ac776f810ee53a66730c17e4020c3ec064a8f88f"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.114",
+ "syn",
 ]
 
 [[package]]
@@ -344,7 +380,7 @@ checksum = "f46882e17999c6cc590af592290432be3bce0428cb0d5f8b6715e4dc7b383eb3"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.114",
+ "syn",
 ]
 
 [[package]]
@@ -378,7 +414,7 @@ dependencies = [
  "proc-macro2",
  "quote",
  "strsim",
- "syn 2.0.114",
+ "syn",
 ]
 
 [[package]]
@@ -392,7 +428,7 @@ dependencies = [
  "proc-macro2",
  "quote",
  "strsim",
- "syn 2.0.114",
+ "syn",
 ]
 
 [[package]]
@@ -403,7 +439,7 @@ checksum = "fc34b93ccb385b40dc71c6fceac4b2ad23662c7eeb248cf10d529b7e055b6ead"
 dependencies = [
  "darling_core 0.20.11",
  "quote",
- "syn 2.0.114",
+ "syn",
 ]
 
 [[package]]
@@ -414,7 +450,7 @@ checksum = "d38308df82d1080de0afee5d069fa14b0326a88c14f15c5ccda35b4a6c414c81"
 dependencies = [
  "darling_core 0.21.3",
  "quote",
- "syn 2.0.114",
+ "syn",
 ]
 
 [[package]]
@@ -443,17 +479,6 @@ dependencies = [
  "serde_core",
 ]
 
-[[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_arbitrary"
 version = "1.3.2"
@@ -462,7 +487,7 @@ checksum = "67e77553c4162a157adbf834ebae5b415acbecbeafc7a74b0e886657506a7611"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.114",
+ "syn",
 ]
 
 [[package]]
@@ -542,6 +567,18 @@ 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",
+]
+
 [[package]]
 name = "either"
 version = "1.15.0"
@@ -566,6 +603,26 @@ dependencies = [
  "zeroize",
 ]
 
+[[package]]
+name = "enum-ordinalize"
+version = "4.3.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "4a1091a7bb1f8f2c4b28f1fe2cef4980ca2d410a3d727d67ecc3178c9b0800f0"
+dependencies = [
+ "enum-ordinalize-derive",
+]
+
+[[package]]
+name = "enum-ordinalize-derive"
+version = "4.3.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8ca9601fb2d62598ee17836250842873a413586e5d7ed88b356e38ddbb0ec631"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn",
+]
+
 [[package]]
 name = "equivalent"
 version = "1.0.2"
@@ -580,9 +637,9 @@ checksum = "2bfcf67fea2815c2fc3b90873fae90957be12ff417335dfadc7f52927feb03b2"
 
 [[package]]
 name = "ethnum"
-version = "1.5.2"
+version = "1.5.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ca81e6b4777c89fd810c25a4be2b1bd93ea034fbe58e6a75216a34c6b82c539b"
+checksum = "40404c3f5f511ec4da6fe866ddf6a717c309fdbb69fbbad7b0f3edab8f2e835f"
 
 [[package]]
 name = "ff"
@@ -647,6 +704,15 @@ dependencies = [
  "subtle",
 ]
 
+[[package]]
+name = "hash32"
+version = "0.3.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "47d60b12902ba28e2730cd37e95b8c9223af2808df9e902d4df49588d1470606"
+dependencies = [
+ "byteorder",
+]
+
 [[package]]
 name = "hashbrown"
 version = "0.12.3"
@@ -655,11 +721,11 @@ checksum = "8a9ee70c43aaf417c914396645a0fa852624801b24ebb7ae78fe8272889ac888"
 
 [[package]]
 name = "hashbrown"
-version = "0.13.2"
+version = "0.15.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "43a3c133739dddd0d2990f9a4bdf8eb4b21ef50e4851ca85ab661199821d510e"
+checksum = "9229cfe53dfd69f0609a49f65461bd93001ea1ef889cd5529dd176593f5338a1"
 dependencies = [
- "ahash",
+ "allocator-api2",
 ]
 
 [[package]]
@@ -668,6 +734,16 @@ version = "0.16.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "841d1cc9bed7f9236f321df977030373f4a4163ae1a7dbfe1a51a2c1a51d9100"
 
+[[package]]
+name = "heapless"
+version = "0.8.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "0bfb9eb618601c89945a70e254898da93b13be0388091d42117462b265bb3fad"
+dependencies = [
+ "hash32",
+ "stable_deref_trait",
+]
+
 [[package]]
 name = "heck"
 version = "0.5.0"
@@ -759,9 +835,9 @@ checksum = "8e04e2fd2b8188ea827b32ef11de88377086d690286ab35747ef7f9bf3ccb590"
 
 [[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",
 ]
@@ -829,7 +905,7 @@ checksum = "1b27834086c65ec3f9387b096d66e99f221cf081c2b738042aa252bcd41204e3"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.114",
+ "syn",
 ]
 
 [[package]]
@@ -862,7 +938,7 @@ checksum = "ed3955f1a9c7c0c15e092f9c887db08b1fc683305fdf6eb6684f22555355e202"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.114",
+ "syn",
 ]
 
 [[package]]
@@ -939,7 +1015,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "479ca8adacdd7ce8f1fb39ce9ecccbfe93a3f1344b3d0d97f20bc0196208f62b"
 dependencies = [
  "proc-macro2",
- "syn 2.0.114",
+ "syn",
 ]
 
 [[package]]
@@ -1016,7 +1092,7 @@ checksum = "b7186006dcb21920990093f30e3dea63b7d6e977bf1256be20c3563a5db070da"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.114",
+ "syn",
 ]
 
 [[package]]
@@ -1125,7 +1201,7 @@ checksum = "d540f220d3187173da220f885ab66608367b6574e925011a9353e4badda91d79"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.114",
+ "syn",
 ]
 
 [[package]]
@@ -1170,7 +1246,7 @@ dependencies = [
  "darling 0.21.3",
  "proc-macro2",
  "quote",
- "syn 2.0.114",
+ "syn",
 ]
 
 [[package]]
@@ -1218,21 +1294,21 @@ checksum = "67b1b7a3b5fe4f1376887184045fcf45c69e92af734b7aaddc05fb777b6fbd03"
 
 [[package]]
 name = "soroban-builtin-sdk-macros"
-version = "23.0.1"
+version = "26.1.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d9336adeabcd6f636a4e0889c8baf494658ef5a3c4e7e227569acd2ce9091e85"
+checksum = "35a3a2b57b132b800e132d2c81e1818359bb2cf787ca39c61c151d6bd0798403"
 dependencies = [
  "itertools",
  "proc-macro2",
  "quote",
- "syn 2.0.114",
+ "syn",
 ]
 
 [[package]]
 name = "soroban-env-common"
-version = "23.0.1"
+version = "26.1.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "00067f52e8bbf1abf0de03fe3e2fbb06910893cfbe9a7d9093d6425658833ff3"
+checksum = "0c76fad735f9622d8aa0fa0c75838d2023a659a0c57638a783b8b2eb967f7822"
 dependencies = [
  "arbitrary",
  "crate-git-revision",
@@ -1249,9 +1325,9 @@ dependencies = [
 
 [[package]]
 name = "soroban-env-guest"
-version = "23.0.1"
+version = "26.1.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ccd1e40963517b10963a8e404348d3fe6caf9c278ac47a6effd48771297374d6"
+checksum = "15aeed6d7a4dc4d3bba65e2ac92f7eeaa664900bbc82e1055e024bf637d74ed3"
 dependencies = [
  "soroban-env-common",
  "static_assertions",
@@ -1259,11 +1335,12 @@ dependencies = [
 
 [[package]]
 name = "soroban-env-host"
-version = "23.0.1"
+version = "26.1.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b9766c5ad78e9d8ae10afbc076301f7d610c16407a1ebb230766dbe007a48725"
+checksum = "6fb523456b4efe9cdf869233cff5a2a1a5ebfae8c0acc405e57479c83781a20c"
 dependencies = [
  "ark-bls12-381",
+ "ark-bn254",
  "ark-ec",
  "ark-ff",
  "ark-serialize",
@@ -1289,15 +1366,15 @@ dependencies = [
  "soroban-env-common",
  "soroban-wasmi",
  "static_assertions",
- "stellar-strkey",
+ "stellar-strkey 0.0.13",
  "wasmparser",
 ]
 
 [[package]]
 name = "soroban-env-macros"
-version = "23.0.1"
+version = "26.1.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b0e6a1c5844257ce96f5f54ef976035d5bd0ee6edefaf9f5e0bcb8ea4b34228c"
+checksum = "2ada3449bb23c964a88a1bf633ac66ca3ebac2061693f53148b199ce816791d0"
 dependencies = [
  "itertools",
  "proc-macro2",
@@ -1305,14 +1382,14 @@ dependencies = [
  "serde",
  "serde_json",
  "stellar-xdr",
- "syn 2.0.114",
+ "syn",
 ]
 
 [[package]]
 name = "soroban-ledger-snapshot"
-version = "23.4.1"
+version = "26.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ba2424e0acf73a465a2a178ffbc70166fc65afdcd8318537ddd89c8d70e8e281"
+checksum = "eb9ee1c6ba495aa33b281a5818ece9b91f94ddbee93f08637d081983c36290ca"
 dependencies = [
  "serde",
  "serde_json",
@@ -1324,9 +1401,9 @@ dependencies = [
 
 [[package]]
 name = "soroban-sdk"
-version = "23.4.1"
+version = "26.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c98b52fc08da8e0edf29233f8c195c5500404139ba68026d4e717931bd354987"
+checksum = "c8c92772aaafb45bbfa8ea5baa5b453e84be4351ddb6383469acbcf3d64ddc8e"
 dependencies = [
  "arbitrary",
  "bytes-lit",
@@ -1342,15 +1419,15 @@ dependencies = [
  "soroban-env-host",
  "soroban-ledger-snapshot",
  "soroban-sdk-macros",
- "stellar-strkey",
+ "stellar-strkey 0.0.16",
  "visibility",
 ]
 
 [[package]]
 name = "soroban-sdk-macros"
-version = "23.4.1"
+version = "26.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "6534066bc1a4cac83e536456d66def2299594879dacc1b71f0133dde3fa742bf"
+checksum = "abbdc02e0d789df78c25b0d056eb01cc906feab690c74895febc96890a0e6aa0"
 dependencies = [
  "darling 0.20.11",
  "heck",
@@ -1363,16 +1440,17 @@ dependencies = [
  "soroban-spec",
  "soroban-spec-rust",
  "stellar-xdr",
- "syn 2.0.114",
+ "syn",
 ]
 
 [[package]]
 name = "soroban-spec"
-version = "23.4.1"
+version = "26.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "12864bda598c4941907cf24efe33c361e712a333749a4afd5b37b56fbf2e3a30"
+checksum = "e3afb753b6ec3329af9744091ebe9f4c047c8fd1078d333b3f83a598a22bef33"
 dependencies = [
  "base64",
+ "sha2",
  "stellar-xdr",
  "thiserror",
  "wasmparser",
@@ -1380,9 +1458,9 @@ dependencies = [
 
 [[package]]
 name = "soroban-spec-rust"
-version = "23.4.1"
+version = "26.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "cef78773373ade35a667ea1e36df634de674e97c0ec5f2cd7e94c3fc524ee0de"
+checksum = "29bcfaf56410230ab5f91088cc12ce7c890274ee3243206b48263ceb36ee2a27"
 dependencies = [
  "prettyplease",
  "proc-macro2",
@@ -1390,7 +1468,7 @@ dependencies = [
  "sha2",
  "soroban-spec",
  "stellar-xdr",
- "syn 2.0.114",
+ "syn",
  "thiserror",
 ]
 
@@ -1423,6 +1501,12 @@ dependencies = [
  "der",
 ]
 
+[[package]]
+name = "stable_deref_trait"
+version = "1.2.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "6ce2be8dc25455e1f91df71bfa12ad37d7af1092ae736f3a6cd0e37bc7810596"
+
 [[package]]
 name = "static_assertions"
 version = "1.1.0"
@@ -1439,11 +1523,22 @@ dependencies = [
  "data-encoding",
 ]
 
+[[package]]
+name = "stellar-strkey"
+version = "0.0.16"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "084afcb0d458c3d5d5baa2d294b18f881e62cc258ef539d8fdf68be7dbe45520"
+dependencies = [
+ "crate-git-revision",
+ "data-encoding",
+ "heapless",
+]
+
 [[package]]
 name = "stellar-xdr"
-version = "23.0.0"
+version = "26.0.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "89d2848e1694b0c8db81fd812bfab5ea71ee28073e09ccc45620ef3cf7a75a9b"
+checksum = "ea6e29c7e1f071c2767916460d006668197843d5d93f0ec8893a26f72a14f595"
 dependencies = [
  "arbitrary",
  "base64",
@@ -1455,7 +1550,7 @@ dependencies = [
  "serde",
  "serde_with",
  "sha2",
- "stellar-strkey",
+ "stellar-strkey 0.0.13",
 ]
 
 [[package]]
@@ -1470,17 +1565,6 @@ version = "2.6.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "13c2bddecc57b384dee18652358fb23172facb8a2c51ccc10d74c157bdea3292"
 
-[[package]]
-name = "syn"
-version = "1.0.109"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "72b64191b275b66ffe2469e8af2c1cfe3bafa67b529ead792a6d0160888b4237"
-dependencies = [
- "proc-macro2",
- "quote",
- "unicode-ident",
-]
-
 [[package]]
 name = "syn"
 version = "2.0.114"
@@ -1509,7 +1593,7 @@ checksum = "4fee6c4efc90059e10f81e6d42c60a18f76588c3d74cb83a0b242a2b6c7504c1"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.114",
+ "syn",
 ]
 
 [[package]]
@@ -1569,7 +1653,7 @@ checksum = "d674d135b4a8c1d7e813e2f8d1c9a58308aee4a680323066025e53132218bd91"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.114",
+ "syn",
 ]
 
 [[package]]
@@ -1610,7 +1694,7 @@ dependencies = [
  "bumpalo",
  "proc-macro2",
  "quote",
- "syn 2.0.114",
+ "syn",
  "wasm-bindgen-shared",
 ]
 
@@ -1681,7 +1765,7 @@ checksum = "053e2e040ab57b9dc951b72c264860db7eb3b0200ba345b4e4c3b14f67855ddf"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.114",
+ "syn",
 ]
 
 [[package]]
@@ -1692,7 +1776,7 @@ checksum = "3f316c4a2570ba26bbec722032c4099d8c8bc095efccdc15688708623367e358"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.114",
+ "syn",
 ]
 
 [[package]]
@@ -1736,7 +1820,7 @@ checksum = "2c7962b26b0a8685668b671ee4b54d007a67d4eaf05fda79ac0ecf41e32270f1"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.114",
+ "syn",
 ]
 
 [[package]]
@@ -1756,7 +1840,7 @@ checksum = "85a5b4158499876c763cb03bc4e49185d3cccbabb15b33c627f7884f43db852e"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.114",
+ "syn",
 ]
 
 [[package]]
diff --git a/app/onchain/Cargo.toml b/app/onchain/Cargo.toml
index 969a29c..2c467ea 100644
--- a/app/onchain/Cargo.toml
+++ b/app/onchain/Cargo.toml
@@ -8,7 +8,7 @@ exclude = [
 ]
 
 [workspace.dependencies]
-soroban-sdk = "23"
+soroban-sdk = "26"
 
 [profile.release]
 opt-level = "z"