--- a/testing/hghave.py
+++ b/testing/hghave.py
@@ -113,16 +113,26 @@ def has_38_plus():
     v = tuple(hgversion()[0:2])
     return v >= (3, 8)
 
 @check('hg39+', 'Running with Mercurial 3.9+')
 def has_39_plus():
     v = tuple(hgversion()[0:2])
     return v >= (3, 9)
 
+@check('hg40+', 'Running with Mercurial 4.0+')
+def has_40_plus():
+    v = tuple(hgversion()[0:2])
+    return v >= (4, 0)
+
+@check('hg41+', 'Running with Mercurial 4.1+')
+def has_41_plus():
+    v = tuple(hgversion()[0:2])
+    return v >= (4, 1)
+
 # Now we reimplement the command line syntax of the CLI hghave script.
 failures = 0
 
 def error(msg):
     global failures
     sys.stderr.write('%s\n' % msg)
     failures += 1