diff --git a/CMakeLists.txt b/CMakeLists.txt
index 6e44788ce..3cf81f698 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -127,7 +127,7 @@ endif()
 
 if(SLS_EXT_BUILD)
     # Find ourself in case of external build
-    find_package(slsDetectorPackage 6 REQUIRED)
+    find_package(slsDetectorPackage ${PROJECT_VERSION} REQUIRED)
 endif()