diff --git a/src/review-request.ts b/src/review-request.ts
index a7b2a106a..e5d9992e2 100644
--- a/src/review-request.ts
+++ b/src/review-request.ts
@@ -22,6 +22,7 @@ import type {
   PsyarxivPreprintId,
   ScieloPreprintId,
   SocarxivPreprintId,
+  TechrxivPreprintId,
 } from './types/preprint-id.js'
 
 export type ReviewRequest = IncompleteReviewRequest | CompletedReviewRequest
@@ -41,6 +42,7 @@ export type ReviewRequestPreprintId =
   | PsyarxivPreprintId
   | ScieloPreprintId
   | SocarxivPreprintId
+  | TechrxivPreprintId
 
 export interface IncompleteReviewRequest {
   readonly status: 'incomplete'
@@ -134,6 +136,7 @@ export function isReviewRequestPreprintId(preprint: PreprintId): preprint is Rev
           'psyarxiv',
           'scielo',
           'socarxiv',
+          'techrxiv',
         ),
       },
       () => true,
diff --git a/test/fc.ts b/test/fc.ts
index a1b904764..ee4e0a84e 100644
--- a/test/fc.ts
+++ b/test/fc.ts
@@ -959,6 +959,7 @@ export const reviewRequestPreprintId = (): fc.Arbitrary<ReviewRequestPreprintId>
     psyarxivPreprintId(),
     scieloPreprintId(),
     socarxivPreprintId(),
+    techrxivPreprintId(),
   )
 
 export const notAReviewRequestPreprintId = (): fc.Arbitrary<Exclude<PreprintId, ReviewRequestPreprintId>> =>
@@ -977,7 +978,6 @@ export const notAReviewRequestPreprintId = (): fc.Arbitrary<Exclude<PreprintId,
     psychArchivesPreprintId(),
     researchSquarePreprintId(),
     scienceOpenPreprintId(),
-    techrxivPreprintId(),
     verixivPreprintId(),
     zenodoPreprintId(),
   )