diff --git a/fpdet/__init__.py b/fpdet/__init__.py
index 8ce373f..69597b9 100644
--- a/fpdet/__init__.py
+++ b/fpdet/__init__.py
@@ -1,4 +1,4 @@
 from ._dcore import P2Q, Q2P, d_matrix, invd_matrix
 from ._numpy_core import *
 
-__version__ = "1.0.2"
+__version__ = "1.0.3"
diff --git a/fpdet/_numpy_core.py b/fpdet/_numpy_core.py
index 6d7befb..7d3298c 100644
--- a/fpdet/_numpy_core.py
+++ b/fpdet/_numpy_core.py
@@ -15,7 +15,7 @@
 from scipy.special import factorial
 
 __all__ = ['compose', 'lrange', 'fact', 'p_convolve', 'moment', 'mean', 'g2',
-           'normalize', 'fidelity', 'entropy', 'DPREC']
+           'normalize', 'fidelity', 'entropy', 'DPREC', 'normdiff']
 
 try:
     DPREC = np.float128
diff --git a/setup.py b/setup.py
index 4dd445f..45ca144 100644
--- a/setup.py
+++ b/setup.py
@@ -6,7 +6,7 @@
 
 setuptools.setup(
     name="fpdet",
-    version="1.0.2",
+    version="1.0.3",
     author="Pavel Gostev",
     author_email="gostev.pavel@physics.msu.ru",
     description=" Basic analytical functions for a few-photon light detection",