diff --git a/packages/demo-protobuf/src/decorator.spec.ts b/packages/demo-protobuf/src/decorator.spec.ts
index 776f7f4f..dc82e3d3 100644
--- a/packages/demo-protobuf/src/decorator.spec.ts
+++ b/packages/demo-protobuf/src/decorator.spec.ts
@@ -13,17 +13,38 @@ describe("decorator demo", () => {
     @CosmosMessage(myRegistry, typeUrl)
     // eslint-disable-next-line @typescript-eslint/no-unused-vars
     class MsgDemo extends Message<{}> {
-      @CosmosField.String(1)
-      public readonly example: string = "";
+      @CosmosField.Boolean(1)
+      public readonly booleanDemo?: boolean;
+
+      @CosmosField.String(2)
+      public readonly stringDemo?: string;
+
+      @CosmosField.Bytes(3)
+      public readonly bytesDemo?: Uint8Array;
+
+      @CosmosField.Int64(4)
+      public readonly int64Demo?: number;
+
+      @CosmosField.UInt64(5)
+      public readonly uint64Demo?: number;
+
+      @CosmosField.Repeated(6)
+      public readonly listDemo?: readonly string[];
     }
 
     const MsgDemoT = myRegistry.lookupType(typeUrl)!;
     const TxBody = myRegistry.lookupType("/cosmos.tx.TxBody")!;
     const Any = myRegistry.lookupType("/google.protobuf.Any")!;
 
-    const msgDemo = MsgDemoT.create({
-      example: "Some example text",
-    });
+    const msgDemoFields = {
+      booleanDemo: true,
+      stringDemo: "example text",
+      bytesDemo: Uint8Array.from([1, 2, 3, 4, 5, 6, 7, 8]),
+      int64Demo: -123,
+      uint64Demo: 123,
+      listDemo: ["this", "is", "a", "list"],
+    };
+    const msgDemo = MsgDemoT.create(msgDemoFields);
     const msgDemoBytes = MsgDemoT.encode(msgDemo).finish();
     const msgDemoWrapped = Any.create({
       type_url: typeUrl,
@@ -43,6 +64,14 @@ describe("decorator demo", () => {
     assert(msg.value);
 
     const msgDemoDecoded = MsgDemoT.decode(msg.value);
-    expect(msgDemoDecoded.example).toEqual(msgDemo.example);
+    expect(msgDemoDecoded.booleanDemo).toEqual(msgDemoFields.booleanDemo);
+    expect(msgDemoDecoded.stringDemo).toEqual(msgDemoFields.stringDemo);
+    // bytesDemo decodes to a Buffer in Node
+    expect(Uint8Array.from(msgDemoDecoded.bytesDemo)).toEqual(msgDemoFields.bytesDemo);
+    // int64Demo and uint64Demo decode to Long
+    expect(msgDemoDecoded.int64Demo.toNumber()).toEqual(msgDemoFields.int64Demo);
+    expect(msgDemoDecoded.uint64Demo.toNumber()).toEqual(msgDemoFields.uint64Demo);
+
+    expect(msgDemoDecoded.listDemo).toEqual(msgDemoFields.listDemo);
   });
 });
diff --git a/packages/demo-protobuf/src/decorator.ts b/packages/demo-protobuf/src/decorator.ts
index febf37c4..6ef95e61 100644
--- a/packages/demo-protobuf/src/decorator.ts
+++ b/packages/demo-protobuf/src/decorator.ts
@@ -16,5 +16,13 @@ export function CosmosMessage(registry: Registry, typeUrl: string): TypeDecorato
 }
 
 export const CosmosField = {
-  String: (id: number) => Field.d(id, "string"),
+  Boolean: (id: number) => Field.d<boolean>(id, "bool"),
+
+  String: (id: number) => Field.d<string>(id, "string"),
+  Bytes: (id: number) => Field.d<Uint8Array>(id, "bytes"),
+
+  Int64: (id: number) => Field.d<number>(id, "int64"),
+  UInt64: (id: number) => Field.d<number>(id, "uint64"),
+
+  Repeated: (id: number) => Field.d<string[]>(id, "string", "repeated"),
 };
diff --git a/packages/demo-protobuf/types/decorator.d.ts b/packages/demo-protobuf/types/decorator.d.ts
index ef014457..e0ffda96 100644
--- a/packages/demo-protobuf/types/decorator.d.ts
+++ b/packages/demo-protobuf/types/decorator.d.ts
@@ -2,5 +2,10 @@ import { TypeDecorator } from "protobufjs";
 import { Registry } from "./registry";
 export declare function CosmosMessage(registry: Registry, typeUrl: string): TypeDecorator<any>;
 export declare const CosmosField: {
+  Boolean: (id: number) => import("protobufjs").FieldDecorator;
   String: (id: number) => import("protobufjs").FieldDecorator;
+  Bytes: (id: number) => import("protobufjs").FieldDecorator;
+  Int64: (id: number) => import("protobufjs").FieldDecorator;
+  UInt64: (id: number) => import("protobufjs").FieldDecorator;
+  Repeated: (id: number) => import("protobufjs").FieldDecorator;
 };