diff --git a/stdlib/@tests/stubtest_allowlists/py313.txt b/stdlib/@tests/stubtest_allowlists/py313.txt
index bc297d1e1..1f4b708fa 100644
--- a/stdlib/@tests/stubtest_allowlists/py313.txt
+++ b/stdlib/@tests/stubtest_allowlists/py313.txt
@@ -110,9 +110,6 @@ asyncio.tasks.Task.__class_getitem__
 asyncio.unix_events.EventLoop
 asyncio.unix_events._UnixSelectorEventLoop.create_unix_server
 asyncio.unix_events.__all__
-base64.__all__
-base64.z85decode
-base64.z85encode
 bdb.Bdb.dispatch_opcode
 bdb.Bdb.set_stepinstr
 bdb.Bdb.user_opcode
diff --git a/stdlib/base64.pyi b/stdlib/base64.pyi
index 4629c95d0..8be4cfe69 100644
--- a/stdlib/base64.pyi
+++ b/stdlib/base64.pyi
@@ -25,6 +25,8 @@ __all__ = [
 
 if sys.version_info >= (3, 10):
     __all__ += ["b32hexencode", "b32hexdecode"]
+if sys.version_info >= (3, 13):
+    __all__ += ["z85decode", "z85encode"]
 
 def b64encode(s: ReadableBuffer, altchars: ReadableBuffer | None = None) -> bytes: ...
 def b64decode(s: str | ReadableBuffer, altchars: str | ReadableBuffer | None = None, validate: bool = False) -> bytes: ...
@@ -57,3 +59,7 @@ def decodebytes(s: ReadableBuffer) -> bytes: ...
 if sys.version_info < (3, 9):
     def encodestring(s: ReadableBuffer) -> bytes: ...
     def decodestring(s: ReadableBuffer) -> bytes: ...
+
+if sys.version_info >= (3, 13):
+    def z85encode(s: ReadableBuffer) -> bytes: ...
+    def z85decode(s: str | ReadableBuffer) -> bytes: ...