diff --git a/Cargo.lock b/Cargo.lock
index fb5aed8..ba6b738 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -209,6 +209,12 @@ version = "0.7.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "96d30a06541fbafbc7f82ed10c06164cfbd2c401138f6addd8404629c4b16711"
 
+[[package]]
+name = "assert_matches"
+version = "1.5.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9b34d609dfbaf33d6889b2b7106d3ca345eacad44200913df5ba02bfd31d2ba9"
+
 [[package]]
 name = "async-stream"
 version = "0.3.5"
@@ -246,7 +252,8 @@ dependencies = [
 name = "attestation-registry"
 version = "0.0.1"
 dependencies = [
- "near-sdk",
+ "near-contract-standards",
+ "near-sdk 5.0.0",
  "uint",
 ]
 
@@ -889,6 +896,35 @@ dependencies = [
  "zeroize",
 ]
 
+[[package]]
+name = "curve25519-dalek"
+version = "4.1.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "0a677b8922c94e01bdbb12126b0bc852f00447528dee1782229af9c720c3f348"
+dependencies = [
+ "cfg-if 1.0.0",
+ "cpufeatures",
+ "curve25519-dalek-derive",
+ "digest 0.10.7",
+ "fiat-crypto",
+ "platforms",
+ "rand_core 0.6.4",
+ "rustc_version",
+ "subtle",
+ "zeroize",
+]
+
+[[package]]
+name = "curve25519-dalek-derive"
+version = "0.1.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f46882e17999c6cc590af592290432be3bce0428cb0d5f8b6715e4dc7b383eb3"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn 2.0.48",
+]
+
 [[package]]
 name = "darling"
 version = "0.20.3"
@@ -1032,7 +1068,16 @@ version = "1.5.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "91cff35c70bba8a626e3185d8cd48cc11b5437e1a5bcd15b9b5fa3c64b6dfee7"
 dependencies = [
- "signature",
+ "signature 1.6.4",
+]
+
+[[package]]
+name = "ed25519"
+version = "2.2.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "115531babc129696a58c64a4fef0a8bf9e9698629fb97e9e40767d235cfbcd53"
+dependencies = [
+ "signature 2.2.0",
 ]
 
 [[package]]
@@ -1041,14 +1086,27 @@ version = "1.0.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "c762bae6dcaf24c4c84667b8579785430908723d5c889f469d76a41d59cc7a9d"
 dependencies = [
- "curve25519-dalek",
- "ed25519",
+ "curve25519-dalek 3.2.1",
+ "ed25519 1.5.3",
  "rand 0.7.3",
  "serde",
  "sha2 0.9.9",
  "zeroize",
 ]
 
+[[package]]
+name = "ed25519-dalek"
+version = "2.1.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "4a3daa8e81a3963a60642bcc1f90a670680bd4a77535faa384e9d1c79d620871"
+dependencies = [
+ "curve25519-dalek 4.1.2",
+ "ed25519 2.2.3",
+ "rand_core 0.6.4",
+ "sha2 0.10.8",
+ "subtle",
+]
+
 [[package]]
 name = "either"
 version = "1.9.0"
@@ -1135,6 +1193,12 @@ version = "2.0.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "25cbce373ec4653f1a01a31e8a5e5ec0c622dc27ff9c4e6606eefef5cbbed4a5"
 
+[[package]]
+name = "fiat-crypto"
+version = "0.2.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1676f435fc1dadde4d03e43f5d62b259e1ce5f40bd4ffb21db2b42ebe59c1382"
+
 [[package]]
 name = "filetime"
 version = "0.2.23"
@@ -1816,6 +1880,15 @@ dependencies = [
  "libc",
 ]
 
+[[package]]
+name = "memoffset"
+version = "0.8.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d61c719bcfbcf5d62b3a09efa6088de8c54bc0bfcd3ea7ae39fcc186108b8de1"
+dependencies = [
+ "autocfg",
+]
+
 [[package]]
 name = "memory_units"
 version = "0.4.0"
@@ -1910,6 +1983,16 @@ dependencies = [
  "serde",
 ]
 
+[[package]]
+name = "near-account-id"
+version = "1.0.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "35cbb989542587b47205e608324ddd391f0cee1c22b4b64ae49f458334b95907"
+dependencies = [
+ "borsh 1.3.1",
+ "serde",
+]
+
 [[package]]
 name = "near-chain-configs"
 version = "0.17.0"
@@ -1919,9 +2002,9 @@ dependencies = [
  "anyhow",
  "chrono",
  "derive_more",
- "near-config-utils",
+ "near-config-utils 0.17.0",
  "near-crypto 0.17.0",
- "near-o11y",
+ "near-o11y 0.17.0",
  "near-primitives 0.17.0",
  "num-rational",
  "once_cell",
@@ -1944,6 +2027,27 @@ dependencies = [
  "tracing",
 ]
 
+[[package]]
+name = "near-config-utils"
+version = "0.20.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "2ae1eaab1d545a9be7a55b6ef09f365c2017f93a03063547591d12c0c6d27e58"
+dependencies = [
+ "anyhow",
+ "json_comments",
+ "thiserror",
+ "tracing",
+]
+
+[[package]]
+name = "near-contract-standards"
+version = "5.0.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "6d60a794d819e96fb307eb9afe5dd5d5c5dc7a73ce46eb8a94a0f40c387a165b"
+dependencies = [
+ "near-sdk 5.0.0",
+]
+
 [[package]]
 name = "near-crypto"
 version = "0.14.0"
@@ -1955,9 +2059,9 @@ dependencies = [
  "borsh 0.9.3",
  "bs58 0.4.0",
  "c2-chacha",
- "curve25519-dalek",
+ "curve25519-dalek 3.2.1",
  "derive_more",
- "ed25519-dalek",
+ "ed25519-dalek 1.0.1",
  "near-account-id 0.14.0",
  "once_cell",
  "parity-secp256k1",
@@ -1980,13 +2084,40 @@ dependencies = [
  "borsh 0.10.3",
  "bs58 0.4.0",
  "c2-chacha",
- "curve25519-dalek",
+ "curve25519-dalek 3.2.1",
  "derive_more",
- "ed25519-dalek",
+ "ed25519-dalek 1.0.1",
  "hex",
  "near-account-id 0.17.0",
- "near-config-utils",
- "near-stdx",
+ "near-config-utils 0.17.0",
+ "near-stdx 0.17.0",
+ "once_cell",
+ "primitive-types",
+ "rand 0.7.3",
+ "secp256k1",
+ "serde",
+ "serde_json",
+ "subtle",
+ "thiserror",
+]
+
+[[package]]
+name = "near-crypto"
+version = "0.20.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "2991d2912218a80ec0733ac87f84fa803accea105611eea209d4419271957667"
+dependencies = [
+ "blake2",
+ "borsh 1.3.1",
+ "bs58 0.4.0",
+ "c2-chacha",
+ "curve25519-dalek 4.1.2",
+ "derive_more",
+ "ed25519-dalek 2.1.1",
+ "hex",
+ "near-account-id 1.0.0",
+ "near-config-utils 0.20.1",
+ "near-stdx 0.20.1",
  "once_cell",
  "primitive-types",
  "rand 0.7.3",
@@ -2006,6 +2137,15 @@ dependencies = [
  "near-primitives-core 0.17.0",
 ]
 
+[[package]]
+name = "near-fmt"
+version = "0.20.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b7d998dfc1e04001608899b2498ad5a782c7d036b73769d510de21964db99286"
+dependencies = [
+ "near-primitives-core 0.20.1",
+]
+
 [[package]]
 name = "near-gas"
 version = "0.2.5"
@@ -2069,7 +2209,7 @@ dependencies = [
  "opentelemetry-semantic-conventions",
  "prometheus",
  "serde",
- "strum",
+ "strum 0.24.1",
  "thiserror",
  "tokio",
  "tracing",
@@ -2078,6 +2218,53 @@ dependencies = [
  "tracing-subscriber",
 ]
 
+[[package]]
+name = "near-o11y"
+version = "0.20.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d20762631bc8253030013bbae9b5f0542691edc1aa6722f1e8141cc9b928ae5b"
+dependencies = [
+ "actix",
+ "base64 0.21.7",
+ "clap 4.4.18",
+ "near-crypto 0.20.1",
+ "near-fmt 0.20.1",
+ "near-primitives-core 0.20.1",
+ "once_cell",
+ "opentelemetry",
+ "opentelemetry-otlp",
+ "opentelemetry-semantic-conventions",
+ "prometheus",
+ "serde",
+ "serde_json",
+ "strum 0.24.1",
+ "thiserror",
+ "tokio",
+ "tracing",
+ "tracing-appender",
+ "tracing-opentelemetry",
+ "tracing-subscriber",
+]
+
+[[package]]
+name = "near-parameters"
+version = "0.20.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e9f16a59b6c3e69b0585be951af6fe42a0ba86c0e207cb8c63badd19efd16680"
+dependencies = [
+ "assert_matches",
+ "borsh 1.3.1",
+ "enum-map",
+ "near-account-id 1.0.0",
+ "near-primitives-core 0.20.1",
+ "num-rational",
+ "serde",
+ "serde_repr",
+ "serde_yaml",
+ "strum 0.24.1",
+ "thiserror",
+]
+
 [[package]]
 name = "near-primitives"
 version = "0.14.0"
@@ -2103,7 +2290,7 @@ dependencies = [
  "serde",
  "serde_json",
  "smart-default",
- "strum",
+ "strum 0.24.1",
  "thiserror",
 ]
 
@@ -2123,10 +2310,10 @@ dependencies = [
  "enum-map",
  "hex",
  "near-crypto 0.17.0",
- "near-fmt",
+ "near-fmt 0.17.0",
  "near-primitives-core 0.17.0",
  "near-rpc-error-macro 0.17.0",
- "near-stdx",
+ "near-stdx 0.17.0",
  "near-vm-errors 0.17.0",
  "num-rational",
  "once_cell",
@@ -2138,7 +2325,49 @@ dependencies = [
  "serde_with",
  "serde_yaml",
  "smart-default",
- "strum",
+ "strum 0.24.1",
+ "thiserror",
+ "time",
+ "tracing",
+]
+
+[[package]]
+name = "near-primitives"
+version = "0.20.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "0462b067732132babcc89d5577db3bfcb0a1bcfbaaed3f2db4c11cd033666314"
+dependencies = [
+ "arbitrary",
+ "base64 0.21.7",
+ "borsh 1.3.1",
+ "bytesize",
+ "cfg-if 1.0.0",
+ "chrono",
+ "derive_more",
+ "easy-ext",
+ "enum-map",
+ "hex",
+ "near-crypto 0.20.1",
+ "near-fmt 0.20.1",
+ "near-o11y 0.20.1",
+ "near-parameters",
+ "near-primitives-core 0.20.1",
+ "near-rpc-error-macro 0.20.1",
+ "near-stdx 0.20.1",
+ "near-vm-runner",
+ "num-rational",
+ "once_cell",
+ "primitive-types",
+ "rand 0.8.5",
+ "rand_chacha 0.3.1",
+ "reed-solomon-erasure",
+ "serde",
+ "serde_json",
+ "serde_with",
+ "serde_yaml",
+ "sha3",
+ "smart-default",
+ "strum 0.24.1",
  "thiserror",
  "time",
  "tracing",
@@ -2158,7 +2387,7 @@ dependencies = [
  "num-rational",
  "serde",
  "sha2 0.10.8",
- "strum",
+ "strum 0.24.1",
 ]
 
 [[package]]
@@ -2179,7 +2408,29 @@ dependencies = [
  "serde_repr",
  "serde_with",
  "sha2 0.10.8",
- "strum",
+ "strum 0.24.1",
+ "thiserror",
+]
+
+[[package]]
+name = "near-primitives-core"
+version = "0.20.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8443eb718606f572c438be6321a097a8ebd69f8e48d953885b4f16601af88225"
+dependencies = [
+ "arbitrary",
+ "base64 0.21.7",
+ "borsh 1.3.1",
+ "bs58 0.4.0",
+ "derive_more",
+ "enum-map",
+ "near-account-id 1.0.0",
+ "num-rational",
+ "serde",
+ "serde_repr",
+ "serde_with",
+ "sha2 0.10.8",
+ "strum 0.24.1",
  "thiserror",
 ]
 
@@ -2205,6 +2456,17 @@ dependencies = [
  "syn 2.0.48",
 ]
 
+[[package]]
+name = "near-rpc-error-core"
+version = "0.20.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "80fca203c51edd9595ec14db1d13359fb9ede32314990bf296b6c5c4502f6ab7"
+dependencies = [
+ "quote",
+ "serde",
+ "syn 2.0.48",
+]
+
 [[package]]
 name = "near-rpc-error-macro"
 version = "0.14.0"
@@ -2228,6 +2490,18 @@ dependencies = [
  "syn 2.0.48",
 ]
 
+[[package]]
+name = "near-rpc-error-macro"
+version = "0.20.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "897a445de2102f6732c8a185d922f5e3bf7fd0a41243ce40854df2197237f799"
+dependencies = [
+ "fs2",
+ "near-rpc-error-core 0.20.1",
+ "serde",
+ "syn 2.0.48",
+]
+
 [[package]]
 name = "near-sandbox-utils"
 version = "0.7.0"
@@ -2255,7 +2529,7 @@ dependencies = [
  "near-crypto 0.14.0",
  "near-primitives 0.14.0",
  "near-primitives-core 0.14.0",
- "near-sdk-macros",
+ "near-sdk-macros 4.1.1",
  "near-sys",
  "near-vm-logic",
  "once_cell",
@@ -2265,6 +2539,31 @@ dependencies = [
  "wee_alloc",
 ]
 
+[[package]]
+name = "near-sdk"
+version = "5.0.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b5c2e7c9524308b1b301cca05d875de13b3b20dc8b92e71f3890b380372e4c88"
+dependencies = [
+ "base64 0.21.7",
+ "borsh 1.3.1",
+ "bs58 0.5.0",
+ "near-account-id 1.0.0",
+ "near-crypto 0.20.1",
+ "near-gas",
+ "near-parameters",
+ "near-primitives 0.20.1",
+ "near-primitives-core 0.20.1",
+ "near-sdk-macros 5.0.0",
+ "near-sys",
+ "near-token",
+ "near-vm-runner",
+ "once_cell",
+ "serde",
+ "serde_json",
+ "wee_alloc",
+]
+
 [[package]]
 name = "near-sdk-macros"
 version = "4.1.1"
@@ -2277,12 +2576,35 @@ dependencies = [
  "syn 1.0.109",
 ]
 
+[[package]]
+name = "near-sdk-macros"
+version = "5.0.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e1e9b23d9d7757ade258921c9cbc7923542e64d9d3b52a6cd91f746c77cb0a0f"
+dependencies = [
+ "Inflector",
+ "darling",
+ "proc-macro2",
+ "quote",
+ "serde",
+ "serde_json",
+ "strum 0.26.2",
+ "strum_macros 0.26.2",
+ "syn 2.0.48",
+]
+
 [[package]]
 name = "near-stdx"
 version = "0.17.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "6540152fba5e96fe5d575b79e8cd244cf2add747bb01362426bdc069bc3a23bc"
 
+[[package]]
+name = "near-stdx"
+version = "0.20.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "855fd5540e3b4ff6fedf12aba2db1ee4b371b36f465da1363a6d022b27cb43b8"
+
 [[package]]
 name = "near-sys"
 version = "0.2.1"
@@ -2295,6 +2617,7 @@ version = "0.2.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "7b68f3f8a2409f72b43efdbeff8e820b81e70824c49fee8572979d789d1683fb"
 dependencies = [
+ "borsh 1.3.1",
  "serde",
 ]
 
@@ -2320,7 +2643,7 @@ dependencies = [
  "near-account-id 0.17.0",
  "near-rpc-error-macro 0.17.0",
  "serde",
- "strum",
+ "strum 0.24.1",
  "thiserror",
 ]
 
@@ -2346,6 +2669,36 @@ dependencies = [
  "zeropool-bn",
 ]
 
+[[package]]
+name = "near-vm-runner"
+version = "0.20.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "c56c80bdb1954808f59bd36a9112377197b38d424991383bf05f52d0fe2e0da5"
+dependencies = [
+ "base64 0.21.7",
+ "borsh 1.3.1",
+ "ed25519-dalek 2.1.1",
+ "enum-map",
+ "memoffset",
+ "near-crypto 0.20.1",
+ "near-parameters",
+ "near-primitives-core 0.20.1",
+ "near-stdx 0.20.1",
+ "num-rational",
+ "once_cell",
+ "prefix-sum-vec",
+ "ripemd",
+ "serde",
+ "serde_repr",
+ "serde_with",
+ "sha2 0.10.8",
+ "sha3",
+ "strum 0.24.1",
+ "thiserror",
+ "tracing",
+ "zeropool-bn",
+]
+
 [[package]]
 name = "near-workspaces"
 version = "0.9.0"
@@ -2368,7 +2721,7 @@ dependencies = [
  "near-jsonrpc-primitives",
  "near-primitives 0.17.0",
  "near-sandbox-utils",
- "near-sdk",
+ "near-sdk 4.1.1",
  "near-token",
  "rand 0.8.5",
  "reqwest",
@@ -2754,6 +3107,12 @@ version = "0.2.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "b4596b6d070b27117e987119b4dac604f3c58cfb0b191112e24771b2faeac1a6"
 
+[[package]]
+name = "platforms"
+version = "3.3.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "626dec3cac7cc0e1577a2ec3fc496277ec2baa084bebad95bb6fdbfae235f84c"
+
 [[package]]
 name = "powerfmt"
 version = "0.2.0"
@@ -2772,6 +3131,12 @@ version = "0.1.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "925383efa346730478fb4838dbe9137d2a47675ad789c546d150a6e1dd4ab31c"
 
+[[package]]
+name = "prefix-sum-vec"
+version = "0.1.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "aa06bd51638b6e76ac9ba9b6afb4164fa647bd2916d722f2623fbb6d1ed8bdba"
+
 [[package]]
 name = "primitive-types"
 version = "0.10.1"
@@ -3517,6 +3882,12 @@ version = "1.6.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "74233d3b3b2f6d4b006dc19dee745e73e2a6bfb6f93607cd3b02bd5b00797d7c"
 
+[[package]]
+name = "signature"
+version = "2.2.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "77549399552de45a898a580c1b41d445bf730df867cc44e6c0233bbc4b8329de"
+
 [[package]]
 name = "siphasher"
 version = "0.3.11"
@@ -3619,9 +3990,15 @@ version = "0.24.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "063e6045c0e62079840579a7e47a355ae92f60eb74daaf156fb1e84ba164e63f"
 dependencies = [
- "strum_macros",
+ "strum_macros 0.24.3",
 ]
 
+[[package]]
+name = "strum"
+version = "0.26.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5d8cec3501a5194c432b2b7976db6b7d10ec95c253208b45f83f7136aa985e29"
+
 [[package]]
 name = "strum_macros"
 version = "0.24.3"
@@ -3635,6 +4012,19 @@ dependencies = [
  "syn 1.0.109",
 ]
 
+[[package]]
+name = "strum_macros"
+version = "0.26.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "c6cf59daf282c0a494ba14fd21610a0325f9f90ec9d1231dea26bcb1d696c946"
+dependencies = [
+ "heck 0.4.1",
+ "proc-macro2",
+ "quote",
+ "rustversion",
+ "syn 2.0.48",
+]
+
 [[package]]
 name = "subtle"
 version = "2.5.0"
diff --git a/Cargo.toml b/Cargo.toml
index 52ecf85..a5d29b7 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -8,9 +8,13 @@ edition = "2021"
 crate-type = ["cdylib"]
 
 [dependencies]
-near-sdk = "4.1.1"
+near-sdk = "5.0.0"
+near-contract-standards = "5.0.0"
 uint = { version = "0.9.3", default-features = false }
 
+[dev-dependencies]
+near-sdk = { version = "5.0.0", features = ["unit-testing"] }
+
 [patch.crates-io]
 parity-secp256k1 = { git = 'https://github.com/paritytech/rust-secp256k1.git' }
 
diff --git a/src/lib.rs b/src/lib.rs
index 07fd02e..bb9acb2 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -1,4 +1,4 @@
-use near_sdk::borsh::{self, BorshDeserialize, BorshSerialize};
+use near_sdk::borsh::{BorshDeserialize, BorshSerialize};
 use near_sdk::env::log_str;
 use near_sdk::serde::{Serialize, Deserialize};
 use near_sdk::collections::LookupMap;
@@ -7,9 +7,9 @@ use near_sdk::{
     AccountId, BorshStorageKey, PublicKey, require
 };
 
-
 // Represents the content being stored into the storage map
 #[derive(BorshSerialize, BorshDeserialize, Clone, Debug)]
+#[borsh(crate = "near_sdk::borsh")]
 pub struct Manifest {
     pub version: String,
     pub cid: String,
@@ -18,6 +18,7 @@ pub struct Manifest {
 
 // An attestation for a given manifest
 #[derive(BorshSerialize, BorshDeserialize, Serialize, Deserialize, Clone, Debug)]
+#[borsh(crate = "near_sdk::borsh")]
 #[serde(crate = "near_sdk::serde")]
 pub struct Attestation {
     pub pubkey: PublicKey,
@@ -25,6 +26,7 @@ pub struct Attestation {
 }
 
 #[derive(BorshDeserialize, BorshStorageKey, BorshSerialize, Copy, Clone)]
+#[borsh(crate = "near_sdk::borsh")]
 enum PrefixKeys {
     Package,
     Manifest,
@@ -38,6 +40,7 @@ pub type Attestations = Vec<Attestation>;
 
 #[near_bindgen]
 #[derive(BorshDeserialize, BorshSerialize)]
+#[borsh(crate = "near_sdk::borsh")]
 pub struct Contract {
     // Each package in the registry is linked by a NEAR Account. Releases are then treated as a list of manifests
     pub packages: LookupMap<AccountId, Releases>,
@@ -292,7 +295,7 @@ impl Contract {
     }
 }
 
-#[cfg(test)]
+#[cfg(all(test, not(target_arch = "wasm32")))]
 mod tests {
     use super::*;
     use near_sdk::test_utils::VMContextBuilder;