diff --git a/models/forgejo_migrations/migrate.go b/models/forgejo_migrations/migrate.go
index b9e0e384c..3b6da7414 100644
--- a/models/forgejo_migrations/migrate.go
+++ b/models/forgejo_migrations/migrate.go
@@ -64,6 +64,8 @@ var migrations = []*Migration{
 	NewMigration("Add repo_archive_download_count table", forgejo_v1_22.AddRepoArchiveDownloadCount),
 	// v13 -> v14
 	NewMigration("Add `hide_archive_links` column to `release` table", AddHideArchiveLinksToRelease),
+	// v14 -> v15
+	NewMigration("Remove Gitea-specific columns from the repository and badge tables", RemoveGiteaSpecificColumnsFromRepositoryAndBadge),
 }
 
 // GetCurrentDBVersion returns the current Forgejo database version.
diff --git a/models/forgejo_migrations/v14.go b/models/forgejo_migrations/v14.go
new file mode 100644
index 000000000..f6dd35ecf
--- /dev/null
+++ b/models/forgejo_migrations/v14.go
@@ -0,0 +1,43 @@
+// Copyright 2024 The Forgejo Authors. All rights reserved.
+// SPDX-License-Identifier: MIT
+
+package forgejo_migrations //nolint:revive
+
+import (
+	"code.gitea.io/gitea/models/migrations/base"
+
+	"xorm.io/xorm"
+)
+
+func RemoveGiteaSpecificColumnsFromRepositoryAndBadge(x *xorm.Engine) error {
+	// Make sure the columns exist before dropping them
+	type Repository struct {
+		ID                int64
+		DefaultWikiBranch string
+	}
+	if err := x.Sync(&Repository{}); err != nil {
+		return err
+	}
+
+	type Badge struct {
+		ID   int64 `xorm:"pk autoincr"`
+		Slug string
+	}
+	err := x.Sync(new(Badge))
+	if err != nil {
+		return err
+	}
+
+	sess := x.NewSession()
+	defer sess.Close()
+	if err := sess.Begin(); err != nil {
+		return err
+	}
+	if err := base.DropTableColumns(sess, "repository", "default_wiki_branch"); err != nil {
+		return err
+	}
+	if err := base.DropTableColumns(sess, "badge", "slug"); err != nil {
+		return err
+	}
+	return sess.Commit()
+}