diff --git a/numpy/array_api/__init__.py b/numpy/array_api/__init__.py
index bbe2fdce26e3..5e58ee0a8998 100644
--- a/numpy/array_api/__init__.py
+++ b/numpy/array_api/__init__.py
@@ -121,7 +121,9 @@
     "The numpy.array_api submodule is still experimental. See NEP 47.", stacklevel=2
 )
 
-__all__ = []
+__array_api_version__ = "2021.12"
+
+__all__ = ["__array_api_version__"]
 
 from ._constants import e, inf, nan, pi