diff --git a/libp2p/crypto/rsa.py b/libp2p/crypto/rsa.py
index 8264446..9b788ca 100644
--- a/libp2p/crypto/rsa.py
+++ b/libp2p/crypto/rsa.py
@@ -24,7 +24,8 @@ class RSAPublicKey(PublicKey):
     def verify(self, data: bytes, signature: bytes) -> bool:
         h = SHA256.new(data)
         try:
-            pkcs1_15.new(self.impl).verify(h, signature)
+            # NOTE: the typing in ``pycryptodome`` is wrong on the arguments to ``verify``.
+            pkcs1_15.new(self.impl).verify(h, signature)  # type: ignore
         except (ValueError, TypeError):
             return False
         return True
@@ -47,7 +48,8 @@ class RSAPrivateKey(PrivateKey):
 
     def sign(self, data: bytes) -> bytes:
         h = SHA256.new(data)
-        return pkcs1_15.new(self.impl).sign(h)
+        # NOTE: the typing in ``pycryptodome`` is wrong on the arguments to ``sign``.
+        return pkcs1_15.new(self.impl).sign(h)  # type: ignore
 
     def get_public_key(self) -> PublicKey:
         return RSAPublicKey(self.impl.publickey())