diff --git a/dwave/preprocessing/__init__.py b/dwave/preprocessing/__init__.py
index 1610d01..b065ad2 100644
--- a/dwave/preprocessing/__init__.py
+++ b/dwave/preprocessing/__init__.py
@@ -12,7 +12,7 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-__version__ = '0.3.0'
+__version__ = '0.3.1'
 
 from dwave.preprocessing import *
 import dwave.preprocessing.composites