diff --git a/main.go b/main.go
index dc67d9c..3ae0b46 100644
--- a/main.go
+++ b/main.go
@@ -20,11 +20,11 @@ import (
 	"syscall"
 )
 
-//go:generate go run -tags generate gen.go 28.2
+//go:generate go run -tags generate gen.go 28.1
 
 // Keep this version in sync with the go:generate statement above
 const (
-	version                     = "4.28.2"
+	version                     = "4.28.1"
 	protoBinariesBaseURL        = "https://repo1.maven.org/maven2/com/google/protobuf/protoc"
 	includesDir                 = "include"
 	includesCacheFilePermission = 0664