diff --git a/GNUmakefile b/GNUmakefile
index 3280792..89713b8 100644
--- a/GNUmakefile
+++ b/GNUmakefile
@@ -19,7 +19,7 @@ OPT_CXXFLAGS_YES = -O3
 
 # dependencies
 ECmasterECMC_VERSION = v1.1.0
-ecmc_VERSION = sandst_a
+ecmc_VERSION = v10.0.0_RC1
 
 BASE_DIR = .
 SRC_DIR = $(BASE_DIR)/src