diff --git a/proto-public/pbcatalog/v1alpha1/protocol.pb.go b/proto-public/pbcatalog/v1alpha1/protocol.pb.go
index 71e89aab4aa5..6e2ba0efb000 100644
--- a/proto-public/pbcatalog/v1alpha1/protocol.pb.go
+++ b/proto-public/pbcatalog/v1alpha1/protocol.pb.go
@@ -26,30 +26,32 @@ const (
 type Protocol int32
 
 const (
-	// buf:lint:ignore ENUM_ZERO_VALUE_SUFFIX
-	Protocol_PROTOCOL_TCP   Protocol = 0
-	Protocol_PROTOCOL_HTTP  Protocol = 1
-	Protocol_PROTOCOL_HTTP2 Protocol = 2
-	Protocol_PROTOCOL_GRPC  Protocol = 3
+	Protocol_PROTOCOL_UNSPECIFIED Protocol = 0
+	Protocol_PROTOCOL_TCP         Protocol = 1
+	Protocol_PROTOCOL_HTTP        Protocol = 2
+	Protocol_PROTOCOL_HTTP2       Protocol = 3
+	Protocol_PROTOCOL_GRPC        Protocol = 4
 	// Protocol Mesh indicates that this port can speak Consul's mTLS based mesh protocol.
-	Protocol_PROTOCOL_MESH Protocol = 4
+	Protocol_PROTOCOL_MESH Protocol = 5
 )
 
 // Enum value maps for Protocol.
 var (
 	Protocol_name = map[int32]string{
-		0: "PROTOCOL_TCP",
-		1: "PROTOCOL_HTTP",
-		2: "PROTOCOL_HTTP2",
-		3: "PROTOCOL_GRPC",
-		4: "PROTOCOL_MESH",
+		0: "PROTOCOL_UNSPECIFIED",
+		1: "PROTOCOL_TCP",
+		2: "PROTOCOL_HTTP",
+		3: "PROTOCOL_HTTP2",
+		4: "PROTOCOL_GRPC",
+		5: "PROTOCOL_MESH",
 	}
 	Protocol_value = map[string]int32{
-		"PROTOCOL_TCP":   0,
-		"PROTOCOL_HTTP":  1,
-		"PROTOCOL_HTTP2": 2,
-		"PROTOCOL_GRPC":  3,
-		"PROTOCOL_MESH":  4,
+		"PROTOCOL_UNSPECIFIED": 0,
+		"PROTOCOL_TCP":         1,
+		"PROTOCOL_HTTP":        2,
+		"PROTOCOL_HTTP2":       3,
+		"PROTOCOL_GRPC":        4,
+		"PROTOCOL_MESH":        5,
 	}
 )
 
@@ -87,33 +89,35 @@ var file_pbcatalog_v1alpha1_protocol_proto_rawDesc = []byte{
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+	0x33,
 }
 
 var (
diff --git a/proto-public/pbcatalog/v1alpha1/protocol.proto b/proto-public/pbcatalog/v1alpha1/protocol.proto
index a18351c5d6d8..909271b9a6cc 100644
--- a/proto-public/pbcatalog/v1alpha1/protocol.proto
+++ b/proto-public/pbcatalog/v1alpha1/protocol.proto
@@ -6,12 +6,12 @@ syntax = "proto3";
 package hashicorp.consul.catalog.v1alpha1;
 
 enum Protocol {
-  // buf:lint:ignore ENUM_ZERO_VALUE_SUFFIX
-  PROTOCOL_TCP = 0;
-  PROTOCOL_HTTP = 1;
-  PROTOCOL_HTTP2 = 2;
-  PROTOCOL_GRPC = 3;
+  PROTOCOL_UNSPECIFIED = 0;
+  PROTOCOL_TCP = 1;
+  PROTOCOL_HTTP = 2;
+  PROTOCOL_HTTP2 = 3;
+  PROTOCOL_GRPC = 4;
 
   // Protocol Mesh indicates that this port can speak Consul's mTLS based mesh protocol.
-  PROTOCOL_MESH = 4;
+  PROTOCOL_MESH = 5;
 }
diff --git a/proto-public/pbcatalog/v1alpha1/service.pb.go b/proto-public/pbcatalog/v1alpha1/service.pb.go
index cd72ccf268ff..ac4afa2c9efa 100644
--- a/proto-public/pbcatalog/v1alpha1/service.pb.go
+++ b/proto-public/pbcatalog/v1alpha1/service.pb.go
@@ -158,7 +158,7 @@ func (x *ServicePort) GetProtocol() Protocol {
 	if x != nil {
 		return x.Protocol
 	}
-	return Protocol_PROTOCOL_TCP
+	return Protocol_PROTOCOL_UNSPECIFIED
 }
 
 var File_pbcatalog_v1alpha1_service_proto protoreflect.FileDescriptor
diff --git a/proto-public/pbcatalog/v1alpha1/workload.pb.go b/proto-public/pbcatalog/v1alpha1/workload.pb.go
index e1f75d810cb8..e6fa7936d0b3 100644
--- a/proto-public/pbcatalog/v1alpha1/workload.pb.go
+++ b/proto-public/pbcatalog/v1alpha1/workload.pb.go
@@ -269,7 +269,7 @@ func (x *WorkloadPort) GetProtocol() Protocol {
 	if x != nil {
 		return x.Protocol
 	}
-	return Protocol_PROTOCOL_TCP
+	return Protocol_PROTOCOL_UNSPECIFIED
 }
 
 type Locality struct {