diff --git a/proto/tendermint/types/types.proto b/proto/tendermint/types/types.proto
index 3855af3d9..bc2c53196 100644
--- a/proto/tendermint/types/types.proto
+++ b/proto/tendermint/types/types.proto
@@ -9,14 +9,7 @@ import "tendermint/crypto/proof.proto";
 import "tendermint/version/types.proto";
 import "tendermint/types/validator.proto";
 
-// This file is a temporary workaround to enable development during the ABCI++
-// project. This file should be deleted and any references to it removed when 
-// the ongoing work on ABCI++ is completed.
-//
-// This file supports building of the `tendermint.abci` proto package.
-// For more information, see https://github.com/tendermint/tendermint/issues/8066
-
-// BlockIdFlag indicates which BlockID the signature is for
+// BlockIdFlag indicates which BlcokID the signature is for
 enum BlockIDFlag {
   option (gogoproto.goproto_enum_stringer) = true;
   option (gogoproto.goproto_enum_prefix)   = false;
@@ -120,19 +113,6 @@ message Vote {
   bytes validator_address = 6;
   int32 validator_index   = 7;
   bytes signature         = 8;
-  VoteExtension vote_extension    = 9;
-}
-
-// VoteExtension is app-defined additional information to the validator votes.
-message VoteExtension {
-  bytes app_data_to_sign             = 1;
-  bytes app_data_self_authenticating = 2;
-}
-
-// VoteExtensionToSign is a subset of VoteExtension that is signed by the validators private key.
-// VoteExtensionToSign is extracted from an existing VoteExtension.
-message VoteExtensionToSign {
-  bytes app_data_to_sign = 1;
 }
 
 // Commit contains the evidence that a block was committed by a set of
@@ -152,7 +132,6 @@ message CommitSig {
   google.protobuf.Timestamp timestamp         = 3
       [(gogoproto.nullable) = false, (gogoproto.stdtime) = true];
   bytes signature = 4;
-  VoteExtensionToSign vote_extension = 5;
 }
 
 message Proposal {