diff --git a/wspb/wspb.go b/wspb/wspb.go
deleted file mode 100644
index e43042d5..00000000
--- a/wspb/wspb.go
+++ /dev/null
@@ -1,73 +0,0 @@
-// Package wspb provides helpers for reading and writing protobuf messages.
-package wspb // import "nhooyr.io/websocket/wspb"
-
-import (
-	"bytes"
-	"context"
-	"fmt"
-
-	"github.com/golang/protobuf/proto"
-
-	"nhooyr.io/websocket"
-	"nhooyr.io/websocket/internal/bpool"
-	"nhooyr.io/websocket/internal/errd"
-)
-
-// Read reads a protobuf message from c into v.
-// It will reuse buffers in between calls to avoid allocations.
-func Read(ctx context.Context, c *websocket.Conn, v proto.Message) error {
-	return read(ctx, c, v)
-}
-
-func read(ctx context.Context, c *websocket.Conn, v proto.Message) (err error) {
-	defer errd.Wrap(&err, "failed to read protobuf message")
-
-	typ, r, err := c.Reader(ctx)
-	if err != nil {
-		return err
-	}
-
-	if typ != websocket.MessageBinary {
-		c.Close(websocket.StatusUnsupportedData, "expected binary message")
-		return fmt.Errorf("expected binary message for protobuf but got: %v", typ)
-	}
-
-	b := bpool.Get()
-	defer bpool.Put(b)
-
-	_, err = b.ReadFrom(r)
-	if err != nil {
-		return err
-	}
-
-	err = proto.Unmarshal(b.Bytes(), v)
-	if err != nil {
-		c.Close(websocket.StatusInvalidFramePayloadData, "failed to unmarshal protobuf")
-		return fmt.Errorf("failed to unmarshal protobuf: %w", err)
-	}
-
-	return nil
-}
-
-// Write writes the protobuf message v to c.
-// It will reuse buffers in between calls to avoid allocations.
-func Write(ctx context.Context, c *websocket.Conn, v proto.Message) error {
-	return write(ctx, c, v)
-}
-
-func write(ctx context.Context, c *websocket.Conn, v proto.Message) (err error) {
-	defer errd.Wrap(&err, "failed to write protobuf message")
-
-	b := bpool.Get()
-	pb := proto.NewBuffer(b.Bytes())
-	defer func() {
-		bpool.Put(bytes.NewBuffer(pb.Bytes()))
-	}()
-
-	err = pb.Marshal(v)
-	if err != nil {
-		return fmt.Errorf("failed to marshal protobuf: %w", err)
-	}
-
-	return c.Write(ctx, websocket.MessageBinary, pb.Bytes())
-}