diff --git a/migrations/v11.go b/migrations/v11.go
new file mode 100644
index 0000000..afd7f8d
--- /dev/null
+++ b/migrations/v11.go
@@ -0,0 +1,33 @@
+/*
+ * Copyright © 2020 A Bunch Tell LLC.
+ *
+ * This file is part of WriteFreely.
+ *
+ * WriteFreely is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License, included
+ * in the LICENSE file in this source code package.
+ */
+
+package migrations
+
+func supportPostSignatures(db *datastore) error {
+	t, err := db.Begin()
+	if err != nil {
+		t.Rollback()
+		return err
+	}
+
+	_, err = t.Exec(`UPDATE posts SET created = DATETIME(created)`)
+	if err != nil {
+		t.Rollback()
+		return err
+	}
+
+	err = t.Commit()
+	if err != nil {
+		t.Rollback()
+		return err
+	}
+
+	return nil
+}