diff --git a/pykhipu/responses.py b/pykhipu/responses.py
index c6a375d..e387747 100644
--- a/pykhipu/responses.py
+++ b/pykhipu/responses.py
@@ -74,7 +74,9 @@ def __init__(self, payment_id, payment_url, simplified_transfer_url,
 
     @classmethod
     def from_data(cls, data):
-        conciliation_date = dateutil.parser.parse(data.get('conciliation_date'))
+        conciliation_date = data.get('conciliation_date')
+        if conciliation_date:
+            conciliation_date = dateutil.parser.parse(conciliation_date)
         expires_date = dateutil.parser.parse(data.get('expires_date'))
 
         return cls(data.get('payment_id'), data.get('payment_url'),
diff --git a/pyproject.toml b/pyproject.toml
index 49ad34b..14f52bf 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,6 +1,6 @@
 [tool.poetry]
 name = "pykhipu"
-version = "0.1.7"
+version = "0.1.8"
 description = "Wrapper for the Khipu payment service API v2.0"
 authors = ["Pablo Albornoz <pablo.albornoz.n@gmail.com>"]
 license = "MIT"