diff --git a/packages/lib/Tools.ts b/packages/lib/Tools.ts
index 95afd8e..7ec01b7 100644
--- a/packages/lib/Tools.ts
+++ b/packages/lib/Tools.ts
@@ -91,6 +91,8 @@ export const difference = <T>(a: T[], b: T[]) => {
 
 export const remove = <T>(a: T, b: T[]) => b.filter(x => x !== a)
 
+export const without = <T>(a: T[], b: T[]) => b.filter(x => !a.includes(x))
+
 export const clamp = ([min, max]: [number, number], n: number) => Math.min(max, Math.max(min, n))
 
 export const tryCatch = async <T>(f: () => Promise<T | void> | T | void, onError?: (e: Error) => void): Promise<T | void> => {
diff --git a/packages/util/Filters.ts b/packages/util/Filters.ts
index a709957..d43f770 100644
--- a/packages/util/Filters.ts
+++ b/packages/util/Filters.ts
@@ -2,7 +2,7 @@ import {Event} from 'nostr-tools'
 import {matchFilter as nostrToolsMatchFilter} from 'nostr-tools'
 import {prop, avg, hash, groupBy, randomId, uniq} from '@welshman/lib'
 import type {HashedEvent, TrustedEvent} from './Events'
-import {isReplaceableKind, isPlainReplaceableKind} from './Kinds'
+import {isReplaceableKind} from './Kinds'
 import {Address, getAddress} from './Address'
 
 export const EPOCH = 1609459200
diff --git a/packages/util/Router.ts b/packages/util/Router.ts
index 3aaac3a..1a5bef4 100644
--- a/packages/util/Router.ts
+++ b/packages/util/Router.ts
@@ -193,7 +193,7 @@ export class Router {
   EventAncestors = (event: TrustedEvent, type: "mentions" | "replies" | "roots") => {
     const tags = Tags.fromEvent(event)
     const ancestors = tags.ancestors()[type]
-    const pubkeys = tags.whereKey("p").values().valueOf()
+    const pubkeys = tags.values("p").valueOf()
     const communities = tags.communities().values().valueOf()
     const groups = tags.groups().values().valueOf()
     const relays = uniq([