diff --git a/GNUmakefile b/GNUmakefile
index cf4c1e7..c7a5ed5 100644
--- a/GNUmakefile
+++ b/GNUmakefile
@@ -20,7 +20,7 @@ OPT_CXXFLAGS_YES = -O3
 # dependencies
 # ECmasterECMC_VERSION = v1.1.0
 # motorECMC_VERSION = 7.0.7-ESS
-ecmc_VERSION = sandst_a
+ecmc_VERSION = v10.0.0_RC1
 
 APPDB:=db
 APPSRC:=src