diff --git a/CMakeLists.txt b/CMakeLists.txt
index ec127846..c6b61724 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -4,7 +4,7 @@ cmake_policy (SET CMP0054 NEW)
 
 project (
   GEOSgcm
-  VERSION 10.12.5
+  VERSION 10.13.0
   LANGUAGES Fortran CXX C)  # Note - CXX is required for ESMF
 
 if ("${PROJECT_SOURCE_DIR}" STREQUAL "${PROJECT_BINARY_DIR}")