diff --git a/contracts/invoice_nft/Cargo.toml b/contracts/invoice_nft/Cargo.toml
index 9f58e6d..6a86094 100644
--- a/contracts/invoice_nft/Cargo.toml
+++ b/contracts/invoice_nft/Cargo.toml
@@ -7,11 +7,11 @@ edition = "2021"
 crate-type = ["cdylib"]
 
 [dependencies]
-# We pin the SDK to version 20.0.0 exactly to match the CLI and Testnet
-soroban-sdk = "20.0.0"
+# We pin the SDK to version 20.5.0 to match the build environment
+soroban-sdk = "20.5.0"
 
 [dev-dependencies]
-soroban-sdk = { version = "20.0.0", features = ["testutils"] }
+soroban-sdk = { version = "20.5.0", features = ["testutils"] }
 
 [profile.release]
 opt-level = "z"
diff --git a/contracts/invoice_nft/src/lib.rs b/contracts/invoice_nft/src/lib.rs
index b527909..300591a 100644
--- a/contracts/invoice_nft/src/lib.rs
+++ b/contracts/invoice_nft/src/lib.rs
@@ -1,5 +1,4 @@
 #![no_std]
-use soroban_sdk::{contract, contractimpl, contracttype, Address, Env, Vec, BytesN, symbol_short};
 
 mod tests;
 
@@ -57,9 +56,7 @@ impl InvoiceContract {
         payload.push_back(amount.into_val(&env));
         payload.push_back(risk_score.into_val(&env));
         
-        let message_bytes = payload.try_into_val(&env).unwrap();
-        env.crypto().ed25519_verify(&backend_pubkey, &message_bytes, signature);
-        true
+
     }
 
     // 1. MINT: Create a new Invoice NFT with signature verification
diff --git a/contracts/lending_pool/Cargo.toml b/contracts/lending_pool/Cargo.toml
index cb0b381..19afbd4 100644
--- a/contracts/lending_pool/Cargo.toml
+++ b/contracts/lending_pool/Cargo.toml
@@ -7,7 +7,7 @@ edition = "2021"
 crate-type = ["cdylib"]
 
 [dependencies]
-soroban-sdk = "20.0.0"
+soroban-sdk = "20.5.0"
 
 [dev-dependencies]
-soroban-sdk = { version = "20.0.0", features = ["testutils"] }
+soroban-sdk = { version = "20.5.0", features = ["testutils"] }