diff --git a/tests/filterpyflakes.py b/tests/filterpyflakes.py
--- a/tests/filterpyflakes.py
+++ b/tests/filterpyflakes.py
@@ -13,6 +13,9 @@ for line in sys.stdin:
     pats = [
         r"undefined name 'WindowsError'",
         r"redefinition of unused '[^']+' from line",
+        # for cffi, allow re-exports from pure.*
+        r"cffi/[^:]*:.*\bimport \*' used",
+        r"cffi/[^:]*:.*\*' imported but unused",
     ]
 
     keep = True
diff --git a/tests/test-check-pyflakes.t b/tests/test-check-pyflakes.t
--- a/tests/test-check-pyflakes.t
+++ b/tests/test-check-pyflakes.t
@@ -10,5 +10,5 @@ run pyflakes on all tracked files ending
   > -X mercurial/pycompat.py -X contrib/python-zstandard \
   > 2>/dev/null \
   > | xargs pyflakes 2>/dev/null | "$TESTDIR/filterpyflakes.py"
-  tests/filterpyflakes.py:38: undefined name 'undefinedname'
+  tests/filterpyflakes.py:41: undefined name 'undefinedname'