diff --git a/src/library/cbor/recordid.ts b/src/library/cbor/recordid.ts
index 1b1773d4..4b655864 100644
--- a/src/library/cbor/recordid.ts
+++ b/src/library/cbor/recordid.ts
@@ -49,6 +49,11 @@ export class StringRecordId {
 }
 
 function escape_ident(str: string) {
+	// String which looks like a number should always be escaped, to prevent it from being parsed as a number
+	if (isOnlyNumbers(str)) {
+		return `⟨${str}⟩`;
+	}
+
 	let code, i, len;
 
 	for (i = 0, len = str.length; i < len; i++) {
@@ -65,3 +70,8 @@ function escape_ident(str: string) {
 
 	return str;
 }
+
+function isOnlyNumbers(str: string) {
+	const parsed = parseInt(str);
+	return !isNaN(parsed) && parsed.toString() === str;
+}
diff --git a/tests/unit/__snapshots__/jsonify.ts.snap b/tests/unit/__snapshots__/jsonify.ts.snap
index 221af7dd..4f14fae1 100644
--- a/tests/unit/__snapshots__/jsonify.ts.snap
+++ b/tests/unit/__snapshots__/jsonify.ts.snap
@@ -71,6 +71,9 @@ snapshot[`jsonify matches snapshot 1`] = `
     ],
     type: "GeometryCollection",
   },
+  id_almost_a_number: "⟨some:thing⟩:1e23",
+  id_is_a_number: "⟨some:thing⟩:123",
+  id_looks_like_number: "⟨some:thing⟩:⟨123⟩",
   null: null,
   num: 123,
   rid: "⟨some:thing⟩:under_score",
diff --git a/tests/unit/jsonify.ts b/tests/unit/jsonify.ts
index 30ae6482..85379eed 100644
--- a/tests/unit/jsonify.ts
+++ b/tests/unit/jsonify.ts
@@ -18,6 +18,9 @@ Deno.test("jsonify matches snapshot", async function (t) {
 	const json = jsonify(
 		{
 			rid: new RecordId("some:thing", "under_score"),
+			id_looks_like_number: new RecordId("some:thing", "123"),
+			id_almost_a_number: new RecordId("some:thing", "1e23"),
+			id_is_a_number: new RecordId("some:thing", 123),
 			str_rid: new StringRecordId("⟨some:thing⟩:under_score"),
 			dec: new Decimal("3.333333"),
 			dur: new Duration("1d2h"),