diff --git a/geopandas/__init__.py b/geopandas/__init__.py
index 9cedc51..2780f17 100644
--- a/geopandas/__init__.py
+++ b/geopandas/__init__.py
@@ -1,7 +1,7 @@
 try:
     from geopandas.version import version as __version__
 except ImportError:
-    __version__ = '0.1.0'
+    __version__ = '0.2.0.dev-unknown'
 
 from geopandas.geoseries import GeoSeries
 from geopandas.geodataframe import GeoDataFrame