diff --git a/GNUmakefile b/GNUmakefile
index adeccf1..c666c66 100644
--- a/GNUmakefile
+++ b/GNUmakefile
@@ -17,7 +17,7 @@ USR_CXXFLAGS += -std=c++17
 OPT_CXXFLAGS_YES = -O3
 
 # dependencies
-ecmc_VERSION = 10.0
+ecmc_VERSION = 11.0
 
 APP:=src
 APPDB:=$(APP)/Db