diff --git a/GNUmakefile b/GNUmakefile
index 50c1b39..a2302f7 100644
--- a/GNUmakefile
+++ b/GNUmakefile
@@ -18,7 +18,7 @@ USR_CXXFLAGS += -std=c++17
 OPT_CXXFLAGS_YES = -O3
 
 # dependencies
-ecmc_VERSION = 10.0
+ecmc_VERSION = 11.0
 
 APPDB:=db
 APPSRC:=src