diff --git a/CMakeLists.txt b/CMakeLists.txt
index 9c71a58..d153ba3 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -23,7 +23,8 @@ set(KF5_VERSION "4.96.0")
 
 ecm_setup_version(${KF5_VERSION} VARIABLE_PREFIX KITEMMODELS
                         VERSION_HEADER "${CMAKE_CURRENT_BINARY_DIR}/kitemmodels_version.h"
-                        PACKAGE_VERSION_FILE "${CMAKE_CURRENT_BINARY_DIR}/KF5ItemModelsConfigVersion.cmake")
+                        PACKAGE_VERSION_FILE "${CMAKE_CURRENT_BINARY_DIR}/KF5ItemModelsConfigVersion.cmake"
+                        SOVERSION 5)
 
 
 add_subdirectory(src)