diff --git a/src/matadi/__about__.py b/src/matadi/__about__.py
index 3ced358..b5fdc75 100644
--- a/src/matadi/__about__.py
+++ b/src/matadi/__about__.py
@@ -1 +1 @@
-__version__ = "0.2.1"
+__version__ = "0.2.2"
diff --git a/src/matadi/_apply.py b/src/matadi/_apply.py
index fbcdd75..7a80311 100644
--- a/src/matadi/_apply.py
+++ b/src/matadi/_apply.py
@@ -29,7 +29,7 @@ def rshape(z):
         parallel = ()
 
     # map function `N` times on reshaped input
-    N = np.product(ax)
+    N = np.prod(ax)
     out = fun.map(N, *parallel)(*y)
 
     if not isinstance(out, tuple):