diff --git a/tests/primitives/test_nist.py b/tests/primitives/test_nist.py
index 86ab232..38f4d0d 100644
--- a/tests/primitives/test_nist.py
+++ b/tests/primitives/test_nist.py
@@ -271,4 +271,30 @@
 
 
 class TestTripleDES_CFB(object):
-    pass
+    test_KAT = generate_encrypt_test(
+        lambda path: load_nist_vectors_from_file(path, "ENCRYPT"),
+        os.path.join("3DES", "KAT"),
+        [
+            "TCFB64invperm.rsp",
+            "TCFB64permop.rsp",
+            "TCFB64subtab.rsp",
+            "TCFB64varkey.rsp",
+            "TCFB64vartext.rsp",
+        ],
+        lambda keys, iv: ciphers.TripleDES(binascii.unhexlify(keys)),
+        lambda keys, iv: modes.CFB(binascii.unhexlify(iv)),
+    )
+
+    test_MMT = generate_encrypt_test(
+        lambda path: load_nist_vectors_from_file(path, "ENCRYPT"),
+        os.path.join("3DES", "MMT"),
+        [
+            "TCFB64MMT1.rsp",
+            "TCFB64MMT2.rsp",
+            "TCFB64MMT3.rsp",
+        ],
+        lambda key1, key2, key3, iv: (
+            ciphers.TripleDES(binascii.unhexlify(key1 + key2 + key3))
+        ),
+        lambda key1, key2, key3, iv: modes.CFB(binascii.unhexlify(iv)),
+    )