diff --git a/src/utils/nip05.ts b/src/utils/nip05.ts
index 696b5078..8f453c93 100644
--- a/src/utils/nip05.ts
+++ b/src/utils/nip05.ts
@@ -44,7 +44,7 @@ const nip05Cache = new SimpleLRU<string, nip19.ProfilePointer>(
       throw e;
     }
   },
-  { max: 500, ttl: Time.hours(1), gauge: cachedNip05sSizeGauge },
+  { max: 3000, ttl: Time.hours(1), gauge: cachedNip05sSizeGauge },
 );
 
 async function localNip05Lookup(store: NStore, localpart: string): Promise<nip19.ProfilePointer | undefined> {
diff --git a/src/utils/unfurl.ts b/src/utils/unfurl.ts
index e749dbcb..5763c151 100644
--- a/src/utils/unfurl.ts
+++ b/src/utils/unfurl.ts
@@ -57,7 +57,7 @@ async function unfurlCard(url: string, signal: AbortSignal): Promise<PreviewCard
 /** TTL cache for preview cards. */
 const previewCardCache = new TTLCache<string, Promise<PreviewCard | null>>({
   ttl: Time.hours(12),
-  max: 500,
+  max: 1000,
 });
 
 /** Unfurl card from cache if available, otherwise fetch it. */