diff --git a/stdlib/2and3/stringprep.pyi b/stdlib/2and3/stringprep.pyi
new file mode 100644
index 000000000..e3b7e9dc2
--- /dev/null
+++ b/stdlib/2and3/stringprep.pyi
@@ -0,0 +1,23 @@
+# Stubs for stringprep (Python 2 and 3)
+
+from typing import Text
+
+def in_table_a1(code: Text) -> bool: ...
+def in_table_b1(code: Text) -> bool: ...
+def map_table_b3(code: Text) -> Text: ...
+def map_table_b2(a: Text) -> Text: ...
+def in_table_c11(code: Text) -> bool: ...
+def in_table_c12(code: Text) -> bool: ...
+def in_table_c11_c12(code: Text) -> bool: ...
+def in_table_c21(code: Text) -> bool: ...
+def in_table_c22(code: Text) -> bool: ...
+def in_table_c21_c22(code: Text) -> bool: ...
+def in_table_c3(code: Text) -> bool: ...
+def in_table_c4(code: Text) -> bool: ...
+def in_table_c5(code: Text) -> bool: ...
+def in_table_c6(code: Text) -> bool: ...
+def in_table_c7(code: Text) -> bool: ...
+def in_table_c8(code: Text) -> bool: ...
+def in_table_c9(code: Text) -> bool: ...
+def in_table_d1(code: Text) -> bool: ...
+def in_table_d2(code: Text) -> bool: ...