diff --git a/package.json b/package.json
index 415ad0c..7c85b6e 100644
--- a/package.json
+++ b/package.json
@@ -1,5 +1,5 @@
 {
-    "version": "1.0.0",
+    "version": "1.0.1",
     "name": "@script3/soroban-governor-sdk",
     "description": "Javascript SDK for the Soroban Governor",
     "type": "module",
diff --git a/src/contract_error.ts b/src/contract_error.ts
index cddf8ac..e9af61f 100644
--- a/src/contract_error.ts
+++ b/src/contract_error.ts
@@ -59,13 +59,18 @@ export enum ContractErrorType {
   // Governor Errors
   InvalidSettingsError = 200,
   NonExistentProposalError = 201,
-  ProposalNotActiveError = 202,
+  ProposalClosedError = 202,
   InvalidProposalSupportError = 203,
   VotePeriodNotFinishedError = 204,
-  ProposalNotQueuedError = 205,
+  ProposalNotExecutableError = 205,
   TimelockNotMetError = 206,
-  CancelActiveProposalError = 207,
+  ProposalVotePeriodStartedError = 207,
   InsufficientVotingUnitsError = 208,
+  AlreadyVotedError = 209,
+  InvalidProposalType = 210,
+  ProposalAlreadyOpenError = 211,
+  OutsideOfVotePeriodError = 212,
+  InvalidProposalActionError = 213,
 }
 
 export function parseError(