diff --git a/api/generate.go b/api/generate.go
index d948400517..e30966c530 100644
--- a/api/generate.go
+++ b/api/generate.go
@@ -77,9 +77,6 @@ func Generate(cfg *config.Config, option ...Option) error {
 	if err = codegen.GenerateCode(data); err != nil {
 		return errors.Wrap(err, "generating core failed")
 	}
-	if err = cfg.Packages.ModTidy(); err != nil {
-		return errors.Wrap(err, "tidy failed")
-	}
 
 	for _, p := range plugins {
 		if mut, ok := p.(plugin.CodeGenerator); ok {
@@ -94,6 +91,10 @@ func Generate(cfg *config.Config, option ...Option) error {
 		return errors.Wrap(err, "generating core failed")
 	}
 
+	if err = cfg.Packages.ModTidy(); err != nil {
+		return errors.Wrap(err, "tidy failed")
+	}
+
 	if !cfg.SkipValidation {
 		if err := validate(cfg); err != nil {
 			return errors.Wrap(err, "validation failed")