diff --git a/package.json b/package.json
index 6ff30bd1..577d942e 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "zeromq",
-  "version": "6.0.0-beta.20",
+  "version": "6.0.0-beta.21",
   "description": "Next-generation ZeroMQ bindings for Node.js",
   "main": "lib/index.js",
   "types": "lib/index.d.ts",
diff --git a/src/compat.ts b/src/compat.ts
index 9adcadbf..59174423 100644
--- a/src/compat.ts
+++ b/src/compat.ts
@@ -901,6 +901,7 @@ export {
   version,
   Context,
   Socket,
+  SocketType,
   createSocket as socket,
   createSocket,
   curveKeypair,