diff --git a/irctest/client_tests/test_sasl.py b/irctest/client_tests/test_sasl.py
index b0fa550..436f6fd 100644
--- a/irctest/client_tests/test_sasl.py
+++ b/irctest/client_tests/test_sasl.py
@@ -1,4 +1,3 @@
-import ecdsa
 import base64
 import pyxmpp2_scram as scram
 
@@ -6,17 +5,6 @@ from irctest import cases
 from irctest import authentication
 from irctest.irc_utils.message_parser import Message
 
-ECDSA_KEY = """
------BEGIN EC PARAMETERS-----
-BggqhkjOPQMBBw==
------END EC PARAMETERS-----
------BEGIN EC PRIVATE KEY-----
-MHcCAQEEIIJueQ3W2IrGbe9wKdOI75yGS7PYZSj6W4tg854hlsvmoAoGCCqGSM49
-AwEHoUQDQgAEAZmaVhNSMmV5r8FXPvKuMnqDKyIA9pDHN5TNMfiF3mMeikGgK10W
-IRX9cyi2wdYg9mUUYyh9GKdBCYHGUJAiCA==
------END EC PRIVATE KEY-----
-"""
-
 class SaslTestCase(cases.BaseClientTestCase, cases.ClientNegociationHelper,
                    cases.OptionalityHelper):
     @cases.OptionalityHelper.skipUnlessHasMechanism('PLAIN')
@@ -125,36 +113,6 @@ class SaslTestCase(cases.BaseClientTestCase, cases.ClientNegociationHelper,
         m = self.negotiateCapabilities(['sasl'], False)
         self.assertEqual(m, Message([], None, 'CAP', ['END']))
 
-    @cases.OptionalityHelper.skipUnlessHasMechanism('ECDSA-NIST256P-CHALLENGE')
-    def testEcdsa(self):
-        """Test ECDSA authentication.
-        """
-        auth = authentication.Authentication(
-                mechanisms=[authentication.Mechanisms.ecdsa_nist256p_challenge],
-                username='jilles',
-                ecdsa_key=ECDSA_KEY,
-                )
-        m = self.negotiateCapabilities(['sasl'], auth=auth)
-        self.assertEqual(m, Message([], None, 'AUTHENTICATE', ['ECDSA-NIST256P-CHALLENGE']))
-        self.sendLine('AUTHENTICATE +')
-        m = self.getMessage()
-        self.assertEqual(m, Message([], None, 'AUTHENTICATE',
-            ['amlsbGVz'])) # jilles
-        self.sendLine('AUTHENTICATE Zm9vYmFy') # foobar
-        m = self.getMessage()
-        self.assertMessageEqual(m, command='AUTHENTICATE')
-        sk = ecdsa.SigningKey.from_pem(ECDSA_KEY)
-        vk = sk.get_verifying_key()
-        signature = base64.b64decode(m.params[0])
-        try:
-            vk.verify(signature, b'foobar')
-        except ecdsa.BadSignatureError:
-            raise AssertionError('Bad signature')
-        self.sendLine('900 * * foo :You are now logged in.')
-        self.sendLine('903 * :SASL authentication successful')
-        m = self.negotiateCapabilities(['sasl'], False)
-        self.assertEqual(m, Message([], None, 'CAP', ['END']))
-
     @cases.OptionalityHelper.skipUnlessHasMechanism('SCRAM-SHA-256')
     def testScram(self):
         """Test SCRAM-SHA-256 authentication.
diff --git a/requirements.txt b/requirements.txt
index 17a6d04..6b02870 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,3 +1,2 @@
 psutil >= 3.1.0 # Fixes #640
-ecdsa
 pyxmpp2_scram