diff --git a/src/requests/status_codes.py b/src/requests/status_codes.py
index 4bd072be97..235881224f 100644
--- a/src/requests/status_codes.py
+++ b/src/requests/status_codes.py
@@ -79,7 +79,7 @@
     422: ("unprocessable_entity", "unprocessable"),
     423: ("locked",),
     424: ("failed_dependency", "dependency"),
-    425: ("unordered_collection", "unordered"),
+    425: ("unordered_collection", "unordered", "too_early"),
     426: ("upgrade_required", "upgrade"),
     428: ("precondition_required", "precondition"),
     429: ("too_many_requests", "too_many"),
diff --git a/tests/test_requests.py b/tests/test_requests.py
index a71fe7d6b8..34796dc7ec 100644
--- a/tests/test_requests.py
+++ b/tests/test_requests.py
@@ -2795,3 +2795,18 @@ def test_json_decode_persists_doc_attr(self, httpbin):
         with pytest.raises(requests.exceptions.JSONDecodeError) as excinfo:
             r.json()
         assert excinfo.value.doc == r.text
+
+    def test_status_code_425(self):
+        r1 = requests.codes.get("TOO_EARLY")
+        r2 = requests.codes.get("too_early")
+        r3 = requests.codes.get("UNORDERED")
+        r4 = requests.codes.get("unordered")
+        r5 = requests.codes.get("UNORDERED_COLLECTION")
+        r6 = requests.codes.get("unordered_collection")
+
+        assert r1 == 425
+        assert r2 == 425
+        assert r3 == 425
+        assert r4 == 425
+        assert r5 == 425
+        assert r6 == 425