diff --git a/src/content.config.ts b/src/content.config.ts
index 9ab7543..e078360 100644
--- a/src/content.config.ts
+++ b/src/content.config.ts
@@ -9,7 +9,7 @@ const blog = defineCollection({
   loader: glob({ pattern: '**/*.{md,mdx}', base: `${contentBase}/blog` }),
   schema: z.object({
     title: z.string(),
-    description: z.string(),
+    description: z.string().nullish(),
     date: z.coerce.date(),
     draft: z.boolean().optional(),
     tags: z.array(z.string()).optional(),
@@ -23,8 +23,8 @@ const projects = defineCollection({
     description: z.string(),
     date: z.coerce.date(),
     draft: z.boolean().optional(),
-    demoURL: z.string().optional(),
-    repoURL: z.string().optional(),
+    demoURL: z.string().nullish(),
+    repoURL: z.string().nullish(),
   }),
 });