diff --git a/CMakeLists.txt b/CMakeLists.txt
index f9c94a10..8461fe3b 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -13,7 +13,7 @@ set(CPACK_PACKAGE_VERSION_MINOR "5")
 set(CPACK_PACKAGE_VERSION "${CPACK_PACKAGE_VERSION_MAJOR}.${CPACK_PACKAGE_VERSION_MINOR}")
 set(CPACK_PACKAGE_VENDOR "andy@warmcat.com")
 set(CPACK_PACKAGE_DESCRIPTION_SUMMARY "${PACKAGE} ${PACKAGE_VERSION}")
-set(SOVERSION "5")
+set(SOVERSION "6")
 set(CPACK_SOURCE_GENERATOR "TGZ")
 set(CPACK_SOURCE_PACKAGE_FILE_NAME "${CPACK_PACKAGE_NAME}-${CPACK_PACKAGE_VERSION}")
 set(VERSION "${CPACK_PACKAGE_VERSION}")