diff --git a/.changeset/bump-rtti-compat-date.md b/.changeset/bump-rtti-compat-date.md
new file mode 100644
index 0000000000..6d858a991b
--- /dev/null
+++ b/.changeset/bump-rtti-compat-date.md
@@ -0,0 +1,5 @@
+---
+"@cloudflare/vitest-pool-workers": patch
+---
+
+Use today's date for the RTTI compat date query instead of a hardcoded `"2023-12-01"`, so newly added Node.js builtin modules are recognized by the module fallback service.
diff --git a/packages/vitest-pool-workers/scripts/rtti/query.mjs b/packages/vitest-pool-workers/scripts/rtti/query.mjs
index b43134a50e..391658acd0 100644
--- a/packages/vitest-pool-workers/scripts/rtti/query.mjs
+++ b/packages/vitest-pool-workers/scripts/rtti/query.mjs
@@ -2,6 +2,8 @@ import { Message } from "capnp-es";
 import { Miniflare } from "miniflare";
 import { StructureGroups } from "./rtti.js";
 
+const compatibilityDate = new Date().toISOString().slice(0, 10);
+
 export async function getBuiltinModules() {
 	// Extract RTTI from `workerd`
 	const mf = new Miniflare({
@@ -12,7 +14,7 @@ export async function getBuiltinModules() {
 	import rtti from "workerd:rtti";
 	export default {
 		fetch() {
-			return new Response(rtti.exportTypes("2023-12-01", ["nodejs_compat"]));
+			return new Response(rtti.exportTypes("${compatibilityDate}", ["nodejs_compat"]));
 		}
 	}
 	`,