diff --git a/packages/bsky/src/lexicon/index.ts b/packages/bsky/src/lexicon/index.ts
index 7613b61fb4e..63c34ee6e8c 100644
--- a/packages/bsky/src/lexicon/index.ts
+++ b/packages/bsky/src/lexicon/index.ts
@@ -2177,13 +2177,13 @@ export class ChatBskyModerationNS {
 
 type SharedRateLimitOpts<T> = {
   name: string
-  calcKey?: (ctx: T) => string
+  calcKey?: (ctx: T) => string | null
   calcPoints?: (ctx: T) => number
 }
 type RouteRateLimitOpts<T> = {
   durationMs: number
   points: number
-  calcKey?: (ctx: T) => string
+  calcKey?: (ctx: T) => string | null
   calcPoints?: (ctx: T) => number
 }
 type HandlerOpts = { blobLimit?: number }
diff --git a/packages/ozone/src/lexicon/index.ts b/packages/ozone/src/lexicon/index.ts
index cb526019090..951724c0fe9 100644
--- a/packages/ozone/src/lexicon/index.ts
+++ b/packages/ozone/src/lexicon/index.ts
@@ -2638,13 +2638,13 @@ export class ToolsOzoneTeamNS {
 
 type SharedRateLimitOpts<T> = {
   name: string
-  calcKey?: (ctx: T) => string
+  calcKey?: (ctx: T) => string | null
   calcPoints?: (ctx: T) => number
 }
 type RouteRateLimitOpts<T> = {
   durationMs: number
   points: number
-  calcKey?: (ctx: T) => string
+  calcKey?: (ctx: T) => string | null
   calcPoints?: (ctx: T) => number
 }
 type HandlerOpts = { blobLimit?: number }
diff --git a/packages/pds/src/lexicon/index.ts b/packages/pds/src/lexicon/index.ts
index cb526019090..951724c0fe9 100644
--- a/packages/pds/src/lexicon/index.ts
+++ b/packages/pds/src/lexicon/index.ts
@@ -2638,13 +2638,13 @@ export class ToolsOzoneTeamNS {
 
 type SharedRateLimitOpts<T> = {
   name: string
-  calcKey?: (ctx: T) => string
+  calcKey?: (ctx: T) => string | null
   calcPoints?: (ctx: T) => number
 }
 type RouteRateLimitOpts<T> = {
   durationMs: number
   points: number
-  calcKey?: (ctx: T) => string
+  calcKey?: (ctx: T) => string | null
   calcPoints?: (ctx: T) => number
 }
 type HandlerOpts = { blobLimit?: number }