diff --git a/CMakeLists.txt b/CMakeLists.txt
index 73d0f2d498ffda6ac404c9d27797a3a25648b65b..a2dd8ae744b1ca5a5ced55d2eddb14902752e1da 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -2,7 +2,7 @@
 
 # Set up the project.
 cmake_minimum_required( VERSION 3.1 )
-project( "GeoModelIO" VERSION 1.3.0 LANGUAGES CXX )
+project( "GeoModelIO" VERSION 1.3.1 LANGUAGES CXX )
 
 # Set default build options.
 set( CMAKE_BUILD_TYPE "Release" CACHE STRING "CMake build mode to use" )