diff --git a/dev-python/twisted/twisted-19.10.0.ebuild b/dev-python/twisted/twisted-19.10.0.ebuild
index 1112e8b1d49f8..074f0cee66f78 100644
--- a/dev-python/twisted/twisted-19.10.0.ebuild
+++ b/dev-python/twisted/twisted-19.10.0.ebuild
@@ -86,6 +86,12 @@ python_prepare_all() {
 	# sphinx (including on py2)
 	rm src/twisted/python/test/test_release.py || die
 
+	# Conch doesn't work with latest >=OpenSSH 7.6
+	#   - https://twistedmatrix.com/trac/ticket/9311
+	#   - https://twistedmatrix.com/trac/ticket/9515
+	rm src/twisted/conch/test/test_conch.py || die "rm src/twisted/conch/test/test_conch.py FAILED"
+	rm src/twisted/conch/test/test_cftp.py || die "rm src/twisted/conch/test/test_cftp.py FAILED"
+
 	# puts system in EMFILE state, then the exception handler may fail
 	# trying to open more files due to some gi magic
 	sed -e '/SKIP_EMFILE/s:None:"Fails on non-pristine systems":' \
diff --git a/dev-python/twisted/twisted-20.3.0.ebuild b/dev-python/twisted/twisted-20.3.0.ebuild
index 1f547fbdba48b..3294057943d20 100644
--- a/dev-python/twisted/twisted-20.3.0.ebuild
+++ b/dev-python/twisted/twisted-20.3.0.ebuild
@@ -90,6 +90,12 @@ python_prepare_all() {
 	# sphinx (including on py2)
 	rm src/twisted/python/test/test_release.py || die
 
+	# Conch doesn't work with latest >=OpenSSH 7.6
+	#   - https://twistedmatrix.com/trac/ticket/9311
+	#   - https://twistedmatrix.com/trac/ticket/9515
+	rm src/twisted/conch/test/test_conch.py || die "rm src/twisted/conch/test/test_conch.py FAILED"
+	rm src/twisted/conch/test/test_cftp.py || die "rm src/twisted/conch/test/test_cftp.py FAILED"
+
 	# puts system in EMFILE state, then the exception handler may fail
 	# trying to open more files due to some gi magic
 	sed -e '/SKIP_EMFILE/s:None:"Fails on non-pristine systems":' \