diff --git a/conf/layer.conf b/conf/layer.conf
index d29cea3..76f40ba 100644
--- a/conf/layer.conf
+++ b/conf/layer.conf
@@ -23,3 +23,5 @@ LAYERSERIES_COMPAT_stm-st-stm32mp = "dunfell"
 # for optee-os-stm32mp dependency
 LAYERDEPENDS_stm-st-stm32mp = "core openembedded-layer meta-python"
 
+# OpenSTLinux compatibility version
+ST_OSTL_COMPATIBILTY_VERSION_stm-st-stm32mp = "3.0"