diff --git a/scripts/ci-release-publish.test.ts b/scripts/ci-release-publish.test.ts
index 20f9c845d..21a454534 100644
--- a/scripts/ci-release-publish.test.ts
+++ b/scripts/ci-release-publish.test.ts
@@ -31,11 +31,12 @@ describe("release publish", () => {
 		});
 	});
 
-	it("recognizes npm's existing-version machine codes without matching registry prose", () => {
+	it("recognizes npm's existing-version machine codes and registry-precheck prose", () => {
 		expect(isVersionAlreadyPublished("npm error code E409\nnpm error Cannot publish over existing version")).toBe(
 			true,
 		);
 		expect(isVersionAlreadyPublished("npm error code EPUBLISHCONFLICT")).toBe(true);
+		expect(isVersionAlreadyPublished("You cannot publish over the previously published versions: 1.2.3.")).toBe(true);
 		expect(isVersionAlreadyPublished("cannot publish over the previously published version")).toBe(false);
 	});
 });
diff --git a/scripts/ci-release-publish.ts b/scripts/ci-release-publish.ts
index e227c34e5..147b0b0f1 100644
--- a/scripts/ci-release-publish.ts
+++ b/scripts/ci-release-publish.ts
@@ -287,11 +287,14 @@ async function packAndPublish(dir: string, name: string): Promise<void> {
 }
 
 /**
- * npm's stable machine codes for an existing exact version:
- * `E409` from a registry conflict and `EPUBLISHCONFLICT` from npm.
+ * npm's stable machine codes for an existing exact version, plus npm 11's
+ * registry-precheck prose when it emits no machine code.
  */
 export function isVersionAlreadyPublished(output: string): boolean {
-	return /npm error code (E409|EPUBLISHCONFLICT)\b/i.test(output);
+	return (
+		/npm error code (E409|EPUBLISHCONFLICT)\b/i.test(output) ||
+		/you cannot publish over (?:the )?previously published versions?\b/i.test(output)
+	);
 }
 
 async function publishGeneratedLeafPackage(leaf: GeneratedLeafPackage): Promise<void> {