diff --git a/colab/plugins/utils/data.py b/colab/plugins/utils/data.py
index 1162a9a..97430d4 100644
--- a/colab/plugins/utils/data.py
+++ b/colab/plugins/utils/data.py
@@ -19,7 +19,7 @@ def register_tasks():
 
         try:
             module = importlib.import_module('{}.data_api'.format(app_name))
-        except ImportError as e:
+        except ImportError:
             continue
 
         for item_name in dir(module):
diff --git a/colab/plugins/utils/proxy_data_api.py b/colab/plugins/utils/proxy_data_api.py
index 2db39d5..e04aee5 100644
--- a/colab/plugins/utils/proxy_data_api.py
+++ b/colab/plugins/utils/proxy_data_api.py
@@ -1,6 +1,7 @@
 
 import abc
 
+
 class ProxyDataAPI(object):
 
     @abc.abstractmethod
--
libgit2 0.21.2