diff --git a/GNUmakefile b/GNUmakefile
index 77a3aea..317b7a9 100644
--- a/GNUmakefile
+++ b/GNUmakefile
@@ -16,7 +16,7 @@ OPT_CXXFLAGS_YES = -O3
 
 # dependencies
 ECmasterECMC_VERSION = v1.1.0
-ecmc_VERSION = 9.5.0
+ecmc_VERSION = 9
 
 BASE_DIR = .
 SRC_DIR = $(BASE_DIR)/src