diff --git a/openexchangerates/__init__.py b/openexchangerates/__init__.py
index 74487d3..b6662ca 100644
--- a/openexchangerates/__init__.py
+++ b/openexchangerates/__init__.py
@@ -49,7 +49,7 @@ def latest(self, base='USD'):
         try:
             resp = self.client.get(self.ENDPOINT_LATEST, params={'base': base})
             resp.raise_for_status()
-        except requests.exceptions.RequestException, e:
+        except requests.exceptions.RequestException as e:
             raise OpenExchangeRatesClientException(e)
         return resp.json(parse_int=decimal.Decimal,
                          parse_float=decimal.Decimal)
@@ -75,7 +75,7 @@ def currencies(self):
         """
         try:
             resp = self.client.get(self.ENDPOINT_CURRENCIES)
-        except requests.exceptions.RequestException, e:
+        except requests.exceptions.RequestException as e:
             raise OpenExchangeRatesClientException(e)
 
         return resp.json()
@@ -104,7 +104,7 @@ def historical(self, date, base='USD'):
                                    date.strftime("%Y-%m-%d"),
                                    params={'base': base})
             resp.raise_for_status()
-        except requests.exceptions.RequestException, e:
+        except requests.exceptions.RequestException as e:
             raise OpenExchangeRatesClientException(e)
         return resp.json(parse_int=decimal.Decimal,
                          parse_float=decimal.Decimal)