diff --git a/stdlib/unicodedata.pyi b/stdlib/unicodedata.pyi
index 9fff042f0b96..caa2b7508442 100644
--- a/stdlib/unicodedata.pyi
+++ b/stdlib/unicodedata.pyi
@@ -41,6 +41,11 @@ def normalize(form: _NormalizationForm, unistr: str, /) -> str: ...
 def numeric(chr: str, /) -> float: ...
 @overload
 def numeric(chr: str, default: _T, /) -> float | _T: ...
+
+if sys.version_info >= (3, 15):
+    def isxidstart(chr: str, /) -> bool: ...
+    def isxidcontinue(chr: str, /) -> bool: ...
+
 @final
 class UCD:
     # The methods below are constructed from the same array in C
@@ -71,3 +76,7 @@ class UCD:
     def numeric(self, chr: str, /) -> float: ...
     @overload
     def numeric(self, chr: str, default: _T, /) -> float | _T: ...
+
+    if sys.version_info >= (3, 15):
+        def isxidstart(chr: str, /) -> bool: ...
+        def isxidcontinue(chr: str, /) -> bool: ...