diff --git a/pygmtools/__init__.py b/pygmtools/__init__.py
index 577f1cad..2ea263f4 100644
--- a/pygmtools/__init__.py
+++ b/pygmtools/__init__.py
@@ -15,7 +15,7 @@
 from .neural_solvers import pca_gm, ipca_gm, cie, ngm
 import pygmtools.utils as utils
 BACKEND = 'numpy'
-__version__ = '0.3.3'
+__version__ = '0.3.4'
 __author__ = 'ThinkLab at SJTU'