diff --git a/schema/post.ts b/schema/post.ts
index e2415550..30aa730c 100644
--- a/schema/post.ts
+++ b/schema/post.ts
@@ -26,8 +26,11 @@ export const SavePostSchema = z.object({
   tags: z.string().array().max(5).optional(),
   published: z.string().datetime().optional(),
   seriesName: z.string()
-    .trim()
-    .optional()
+  .trim()
+  .min(1, "Series name cannot be empty")
+  .max(50, "Series name is too long")
+  .regex(/^[\w\s-]+$/, "Series name can only contain letters, numbers, spaces, and hyphens")
+  .optional()
 });
 
 export const PublishPostSchema = z.object({
diff --git a/schema/series.ts b/schema/series.ts
deleted file mode 100644
index e457b4cb..00000000
--- a/schema/series.ts
+++ /dev/null
@@ -1,6 +0,0 @@
-import z from "zod";
-
-export const UpdateSeriesSchema = z.object({
-    postId: z.string(),
-    seriesName: z.string().trim().optional()
-});
\ No newline at end of file