diff --git a/README.md b/README.md
index 6a51293a..0630a807 100644
--- a/README.md
+++ b/README.md
@@ -98,13 +98,13 @@ executor. You can send raw redis commands and receive replies.
 ```ts
 {
   const reply = await redis.executor.exec("SET", "redis", "nice");
-  assert(reply.type === SIMPLE_STRING_TYPE);
+  assert(reply.type === replyTypes.SimpleString);
   assert(reply.value() === "OK");
 }
 
 {
   const reply = await redis.executor.exec("GET", "redis");
-  assert(reply.type === BULK_STRING_TYPE);
+  assert(reply.type === replyTypes.BulkString);
   assert(reply.value() === "nice");
 }
 ```
diff --git a/mod.ts b/mod.ts
index 030fbc0a..4b756f00 100644
--- a/mod.ts
+++ b/mod.ts
@@ -1,10 +1,5 @@
 // Generated by tools/make_mod.ts. Don't edit.
-export {
-  ARRAY_TYPE,
-  BULK_STRING_TYPE,
-  INTEGER_TYPE,
-  SIMPLE_STRING_TYPE,
-} from "./protocol/mod.ts";
+export { replyTypes } from "./protocol/mod.ts";
 export { connect, parseURL } from "./redis.ts";
 export {
   ConnectionClosedError,
diff --git a/protocol/mod.ts b/protocol/mod.ts
index 537dd20c..6f6ce365 100644
--- a/protocol/mod.ts
+++ b/protocol/mod.ts
@@ -17,13 +17,10 @@ export type {
 } from "./types.ts";
 
 export {
-  ARRAY_TYPE,
-  BULK_STRING_TYPE,
   createSimpleStringReply,
-  INTEGER_TYPE,
   readArrayReply,
   readReply,
-  SIMPLE_STRING_TYPE,
+  replyTypes,
   unwrapReply,
 } from "./reply.ts";
 
diff --git a/protocol/reply.ts b/protocol/reply.ts
index d8c00e35..70f614d9 100644
--- a/protocol/reply.ts
+++ b/protocol/reply.ts
@@ -9,10 +9,12 @@ const SimpleStringCode = "+".charCodeAt(0);
 const ArrayReplyCode = "*".charCodeAt(0);
 const ErrorReplyCode = "-".charCodeAt(0);
 
-export const INTEGER_TYPE = "integer";
-export const SIMPLE_STRING_TYPE = "simple string";
-export const ARRAY_TYPE = "array";
-export const BULK_STRING_TYPE = "bulk string";
+export const replyTypes = {
+  Integer: "integer",
+  SimpleString: "simple string",
+  Array: "array",
+  BulkString: "bulk string",
+} as const;
 
 export function unwrapReply(
   reply: types.RedisReplyOrError,
@@ -72,7 +74,7 @@ class IntegerReply implements types.IntegerReply {
   }
 
   get type(): "integer" {
-    return INTEGER_TYPE;
+    return replyTypes.Integer;
   }
 
   value(): types.Integer {
@@ -108,7 +110,7 @@ class BulkReply implements types.BulkReply {
   }
 
   get type(): "bulk string" {
-    return BULK_STRING_TYPE;
+    return replyTypes.BulkString;
   }
 
   value(): types.Bulk {
@@ -138,7 +140,7 @@ class SimpleStringReply implements types.SimpleStringReply {
   }
 
   get type(): "simple string" {
-    return SIMPLE_STRING_TYPE;
+    return replyTypes.SimpleString;
   }
 
   value(): types.SimpleString {
@@ -189,7 +191,7 @@ class ArrayReply implements types.ArrayReply {
   }
 
   get type(): "array" {
-    return ARRAY_TYPE;
+    return replyTypes.Array;
   }
 
   value() {
diff --git a/tests/executor_test.ts b/tests/executor_test.ts
index 2a7a9475..29524450 100644
--- a/tests/executor_test.ts
+++ b/tests/executor_test.ts
@@ -1,4 +1,4 @@
-import { BulkReply, ErrorReplyError, parseURL } from "../mod.ts";
+import { BulkReply, ErrorReplyError, parseURL, replyTypes } from "../mod.ts";
 import {
   assert,
   assertEquals,
@@ -20,21 +20,21 @@ suite.test("simple, string, and integer replies", async () => {
   // simple string
   {
     const reply = await client.executor.exec("SET", "key", "a");
-    assertEquals(reply.type, "simple string");
+    assertEquals(reply.type, replyTypes.SimpleString);
     assertEquals(reply.value(), "OK");
   }
 
   // bulk string
   {
     const reply = await client.executor.exec("GET", "key");
-    assertEquals(reply.type, "bulk string");
+    assertEquals(reply.type, replyTypes.BulkString);
     assertEquals(reply.value(), "a");
   }
 
   // integer
   {
     const reply = await client.executor.exec("EXISTS", "key");
-    assertEquals(reply.type, "integer");
+    assertEquals(reply.type, replyTypes.Integer);
     assertEquals(reply.value(), 1);
   }
 });
@@ -43,7 +43,7 @@ suite.test("get the raw data as Uint8Array", async () => {
   const encoder = new TextEncoder();
   await client.set("key", encoder.encode("hello"));
   const reply = await client.executor.exec("GET", "key");
-  assertEquals(reply.type, "bulk string");
+  assertEquals(reply.type, replyTypes.BulkString);
   assertEquals((reply as BulkReply).buffer(), encoder.encode("hello"));
 });