diff --git a/ChangeLog.d/make-generate-tests-python.txt b/ChangeLog.d/make-generate-tests-python.txt
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+Changes
+   * When building the test suites with GNU make, invoke python3 or python, not
+     python2. The build still works with either Python 2.7 or 3.5+, but we
+     recommend using a version of Python that is supported upstream.