diff --git a/CMakeLists.txt b/CMakeLists.txt
index df2fa79..e003caf 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -1,5 +1,5 @@
 cmake_minimum_required(VERSION 3.15)
-project(scattnlay VERSION 2.3)
+project(scattnlay VERSION 2.4)
 
 cmake_host_system_information(RESULT HOSTNAME QUERY HOSTNAME)
 
diff --git a/setup.py b/setup.py
index 3958356..f0e196f 100755
--- a/setup.py
+++ b/setup.py
@@ -30,7 +30,7 @@
 #    You should have received a copy of the GNU General Public License
 #    along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
-__version__ = "2.3"
+__version__ = "2.4"
 __title__ = "Calculation of the scattering of EM radiation by a multilayered sphere"
 __mod__ = "python-scattnlay"
 __author__ = "Ovidio Peña Rodríguez"
diff --git a/tests/test_py.py b/tests/test_py.py
index 941aa63..4f42367 100644
--- a/tests/test_py.py
+++ b/tests/test_py.py
@@ -22,6 +22,8 @@
     [10000, 1.5 + 1j, 2.004368, 1.236574],  # ,'j'],
     [10000, 10 + 10j, 2.005914, 1.795393],  # ,'m'],
     # [1.8263846985116234, 0.02867488311561525+1.2957040351341687j, 3, 3]
+    # 'water r=1mkm scattnlay 2020/04/22']
+    [2.03575204, 1.4558642 + 0.20503704j, 1.952484, 0.9391477],
 ]