diff --git a/contracts/Scarb.lock b/contracts/Scarb.lock
index 6da32fe..3316c50 100644
--- a/contracts/Scarb.lock
+++ b/contracts/Scarb.lock
@@ -1,66 +1,20 @@
 # Code generated by scarb DO NOT EDIT.
 version = 1
 
-[[package]]
-name = "alexandria_data_structures"
-version = "0.2.0"
-source = "git+https://github.com/keep-starknet-strange/alexandria.git#11a155f7897294105e2c99a95bf3efeabfd2d014"
-dependencies = [
- "alexandria_encoding",
-]
-
-[[package]]
-name = "alexandria_encoding"
-version = "0.1.0"
-source = "git+https://github.com/keep-starknet-strange/alexandria.git#11a155f7897294105e2c99a95bf3efeabfd2d014"
-dependencies = [
- "alexandria_math",
- "alexandria_numeric",
-]
-
-[[package]]
-name = "alexandria_math"
-version = "0.2.0"
-source = "git+https://github.com/keep-starknet-strange/alexandria.git#11a155f7897294105e2c99a95bf3efeabfd2d014"
-dependencies = [
- "alexandria_data_structures",
-]
-
-[[package]]
-name = "alexandria_numeric"
-version = "0.1.0"
-source = "git+https://github.com/keep-starknet-strange/alexandria.git#11a155f7897294105e2c99a95bf3efeabfd2d014"
-dependencies = [
- "alexandria_math",
-]
-
-[[package]]
-name = "cairo_lib"
-version = "0.2.0"
-source = "git+https://github.com/HerodotusDev/cairo-lib.git#a0c0ee4feeb4edb61e7a35d29595ad8647c3d469"
-
 [[package]]
 name = "contracts"
 version = "0.1.0"
 dependencies = [
- "alexandria_math",
- "cairo_lib",
  "openzeppelin",
- "pragma_lib",
  "snforge_std",
 ]
 
 [[package]]
 name = "openzeppelin"
-version = "0.8.0"
-source = "git+https://github.com/OpenZeppelin/cairo-contracts.git#441e6ce76ade91817068e4d4c5168dbd3ed20375"
-
-[[package]]
-name = "pragma_lib"
-version = "1.0.0"
-source = "git+https://github.com/astraly-labs/pragma-lib.git#24bb4da111ae7eb00e7cf40d4f1767c86d6447cd"
+version = "0.11.0"
+source = "git+https://github.com/OpenZeppelin/cairo-contracts.git?tag=v0.11.0#a83f36b23f1af6e160288962be4a2701c3ecbcda"
 
 [[package]]
 name = "snforge_std"
-version = "0.1.0"
-source = "git+https://github.com/foundry-rs/starknet-foundry?tag=v0.11.0#5465c41541c44a7804d16318fab45a2f0ccec9e7"
+version = "0.20.1"
+source = "git+https://github.com/foundry-rs/starknet-foundry?tag=v0.20.1#fea2db8f2b20148cc15ee34b08de12028eb42942"
diff --git a/contracts/Scarb.toml b/contracts/Scarb.toml
index 94b9ba2..920a408 100644
--- a/contracts/Scarb.toml
+++ b/contracts/Scarb.toml
@@ -3,24 +3,15 @@ name = "contracts"
 version = "0.1.0"
 
 [dependencies]
-starknet = "2.3.1"
-
-[dependencies.alexandria_math]
-git = "https://github.com/keep-starknet-strange/alexandria.git"
-
-[dependencies.cairo_lib]
-git = "https://github.com/HerodotusDev/cairo-lib.git"
+starknet = "2.6.3"
 
 [dependencies.openzeppelin]
 git = "https://github.com/OpenZeppelin/cairo-contracts.git"
-tag = "v0.8.0"
-
-[dependencies.pragma_lib]
-git = "https://github.com/astraly-labs/pragma-lib.git"
+tag = "v0.11.0"
 
 [dependencies.snforge_std]
 git = "https://github.com/foundry-rs/starknet-foundry"
-tag = "v0.11.0"
+tag = "v0.20.1"
 
 [[target.starknet-contract]]
 casm = true
diff --git a/contracts/src/lib.cairo b/contracts/src/lib.cairo
index 28ec7bf..2f43720 100644
--- a/contracts/src/lib.cairo
+++ b/contracts/src/lib.cairo
@@ -1,5 +1,5 @@
 #[starknet::interface]
-trait IHelloStarknet<TContractState> {
+pub trait IHelloStarknet<TContractState> {
     fn increase_balance(ref self: TContractState, amount: felt252);
     fn get_balance(self: @TContractState) -> felt252;
 }
@@ -8,10 +8,10 @@ trait IHelloStarknet<TContractState> {
 mod HelloStarknet {
     #[storage]
     struct Storage {
-        balance: felt252,
+        balance: felt252, 
     }
 
-    #[external(v0)]
+    #[abi(embed_v0)]
     impl HelloStarknetImpl of super::IHelloStarknet<ContractState> {
         fn increase_balance(ref self: ContractState, amount: felt252) {
             assert(amount != 0, 'Amount cannot be 0');
@@ -22,4 +22,4 @@ mod HelloStarknet {
             self.balance.read()
         }
     }
-}
+}
\ No newline at end of file
diff --git a/contracts/tests/test_contract.cairo b/contracts/tests/test_contract.cairo
index ce505c5..a74fe02 100644
--- a/contracts/tests/test_contract.cairo
+++ b/contracts/tests/test_contract.cairo
@@ -1,42 +1 @@
-use contracts::IHelloStarknetSafeDispatcher;
-use contracts::IHelloStarknetSafeDispatcherTrait;
-
-use snforge_std::{declare, ContractClassTrait};
-use starknet::ContractAddress;
-
-fn deploy_contract(name: felt252) -> ContractAddress {
-    let contract = declare(name);
-    contract.deploy(@ArrayTrait::new()).unwrap()
-}
-
-#[test]
-fn test_increase_balance() {
-    let contract_address = deploy_contract('HelloStarknet');
-
-    let safe_dispatcher = IHelloStarknetSafeDispatcher { contract_address };
-
-    let balance_before = safe_dispatcher.get_balance().unwrap();
-    assert(balance_before == 0, 'Invalid balance');
-
-    safe_dispatcher.increase_balance(42).unwrap();
-
-    let balance_after = safe_dispatcher.get_balance().unwrap();
-    assert(balance_after == 42, 'Invalid balance');
-}
-
-#[test]
-fn test_cannot_increase_balance_with_zero_value() {
-    let contract_address = deploy_contract('HelloStarknet');
-
-    let safe_dispatcher = IHelloStarknetSafeDispatcher { contract_address };
-
-    let balance_before = safe_dispatcher.get_balance().unwrap();
-    assert(balance_before == 0, 'Invalid balance');
-
-    match safe_dispatcher.increase_balance(0) {
-        Result::Ok(_) => panic_with_felt252('Should have panicked'),
-        Result::Err(panic_data) => {
-            assert(*panic_data.at(0) == 'Amount cannot be 0', *panic_data.at(0));
-        }
-    };
-}
+// contract test in here
\ No newline at end of file