diff --git a/basic_bank/src/main.leo b/basic_bank/src/main.leo
index 8258d4b..1693e98 100644
--- a/basic_bank/src/main.leo
+++ b/basic_bank/src/main.leo
@@ -47,7 +47,7 @@ program basic_bank.aleo {
     // - `hash`  : The hash of the token owner.
     // - `amount`: The amount of tokens that were deposited.
     finalize deposit(hash: field, amount: u64) {
-        let balance: u64 = Mapping::get_or_init(balances, hash, 0u64);
+        let balance: u64 = Mapping::get_or_use(balances, hash, 0u64);
         Mapping::set(balances, hash, amount + balance);
     }
 
@@ -75,7 +75,7 @@ program basic_bank.aleo {
     // - `hash`  : The hash of the token owner.
     // - `amount`: The amount of tokens that were withdrawn.
     finalize withdraw(hash: field, amount: u64) {
-        let balance: u64 = Mapping::get_or_init(balances, hash, 0u64);
+        let balance: u64 = Mapping::get_or_use(balances, hash, 0u64);
         Mapping::set(balances, hash, balance - amount);
     }
 
diff --git a/token/src/main.leo b/token/src/main.leo
index 9daf53d..58a02cd 100644
--- a/token/src/main.leo
+++ b/token/src/main.leo
@@ -23,7 +23,7 @@ program token.aleo {
         // Increments `account[receiver]` by `amount`.
         // If `account[receiver]` does not exist, it will be created.
         // If `account[receiver] + amount` overflows, `mint_public` is reverted.
-        let receiver_amount: u64 = Mapping::get_or_init(account, receiver, 0u64);
+        let receiver_amount: u64 = Mapping::get_or_use(account, receiver, 0u64);
         Mapping::set(account, receiver, receiver_amount + amount);
     }
 
@@ -45,13 +45,13 @@ program token.aleo {
         // Decrements `account[sender]` by `amount`.
         // If `account[sender]` does not exist, it will be created.
         // If `account[sender] - amount` underflows, `transfer_public` is reverted.
-        let sender_amount: u64 = Mapping::get_or_init(account, sender, 0u64);
+        let sender_amount: u64 = Mapping::get_or_use(account, sender, 0u64);
         Mapping::set(account, sender, sender_amount - amount);
         
         // Increments `account[receiver]` by `amount`.
         // If `account[receiver]` does not exist, it will be created.
         // If `account[receiver] + amount` overflows, `transfer_public` is reverted.
-        let receiver_amount: u64 = Mapping::get_or_init(account, receiver, 0u64);
+        let receiver_amount: u64 = Mapping::get_or_use(account, receiver, 0u64);
         Mapping::set(account, receiver, receiver_amount + amount);
     }
 
@@ -101,7 +101,7 @@ program token.aleo {
         // Increments `account[receiver]` by `amount`.
         // If `account[receiver]` does not exist, it will be created.
         // If `account[receiver] + amount` overflows, `transfer_private_to_public` is reverted.
-        let receiver_amount: u64 = Mapping::get_or_init(account, receiver, 0u64);
+        let receiver_amount: u64 = Mapping::get_or_use(account, receiver, 0u64);
         Mapping::set(account, receiver, receiver_amount + amount);
     }
 
@@ -123,7 +123,7 @@ program token.aleo {
         // Decrements `account[sender]` by `amount`.
         // If `account[sender]` does not exist, it will be created.
         // If `account[sender] - amount` underflows, `transfer_public_to_private` is reverted.
-        let sender_amount: u64 = Mapping::get_or_init(account, sender, 0u64);
+        let sender_amount: u64 = Mapping::get_or_use(account, sender, 0u64);
         Mapping::set(account, sender, sender_amount - amount);
     }
 }
diff --git a/vote/src/main.leo b/vote/src/main.leo
index 6e504bf..7b1a002 100644
--- a/vote/src/main.leo
+++ b/vote/src/main.leo
@@ -64,7 +64,7 @@ program vote.aleo {
     }
     // Create a new ticket on a proposal in the "tickets" mapping.
     finalize new_ticket(public pid: field) {
-        let vote: u64 = Mapping::get_or_init(tickets, pid, 0u64);
+        let vote: u64 = Mapping::get_or_use(tickets, pid, 0u64);
         Mapping::set(tickets, pid, vote + 1u64);
     }
 
@@ -75,7 +75,7 @@ program vote.aleo {
     }
     finalize agree(public pid: field) {
         // Publicly increment the number of agree votes.
-        let agree_vote: u64 = Mapping::get_or_init(agree_votes, pid, 0u64);
+        let agree_vote: u64 = Mapping::get_or_use(agree_votes, pid, 0u64);
         Mapping::set(agree_votes, pid, agree_vote + 1u64);
     }
 
@@ -86,7 +86,7 @@ program vote.aleo {
     }
     finalize disagree(pid: field) {
         // Publicly increment the number of disagree votes.
-        let disagree_vote: u64 = Mapping::get_or_init(disagree_votes, pid, 0u64);
+        let disagree_vote: u64 = Mapping::get_or_use(disagree_votes, pid, 0u64);
         Mapping::set(disagree_votes, pid, disagree_vote + 1u64);
     }
 }