--- /dev/null
+diff --git a/test/test1001/Versions.py b/test/test1001/Versions.py
+index f25466e..96144e6 100644
+--- a/test/test1001/Versions.py
++++ b/test/test1001/Versions.py
+@@ -87,7 +87,10 @@ class Test_Adao(unittest.TestCase):
+ import matplotlib
+ mplversion = matplotlib.__version__
+ print(" - Matplotlib........: %s"%mplversion)
+- assert compare_versions(mplversion, minimal_matplotlib_version)
++ if mplversion == '0+unknown':
++ print("Presumably git based version... skipping assertion")
++ else:
++ assert compare_versions(mplversion, minimal_matplotlib_version)
+ #
+ print("")
+ backends_OK = []