diff --git a/python-gsw.changes b/python-gsw.changes
index a8a99ef..ade6f73 100644
--- a/python-gsw.changes
+++ b/python-gsw.changes
@@ -1,3 +1,9 @@
+-------------------------------------------------------------------
+Sun Feb 21 21:01:13 UTC 2021 - Ben Greiner <code@bnavigator.de>
+
+- Skip python36 build: With NumPy 1.20, python36-numpy is no
+  longer available in Tumbleweed (NEP 29)
+
 -------------------------------------------------------------------
 Sun Jan 17 23:33:01 UTC 2021 - Benjamin Greiner <code@bnavigator.de>
 
diff --git a/python-gsw.spec b/python-gsw.spec
index 7dfbd66..f54656b 100644
--- a/python-gsw.spec
+++ b/python-gsw.spec
@@ -16,8 +16,9 @@
 #
 
 
+%{?!python_module:%define python_module() python3-%{**}}
 %define skip_python2 1
-%{?!python_module:%define python_module() python-%{**} python3-%{**}}
+%define skip_python36 1
 Name:           python-gsw
 Version:        3.4.0
 Release:        0