diff --git a/build/config.mak b/build/config.mak
index a912bd170..cf91239fe 100644
--- a/build/config.mak
+++ b/build/config.mak
@@ -6,9 +6,9 @@ DEBUG ?= 0
 HOME_DISPLAY_EXTERNALS ?= 1
 EPSILON_VERSION ?= 15.5.0
 OMEGA_VERSION ?= 2.0.2
-UPSILON_VERSION ?= 1.0.0
+UPSILON_VERSION ?= 1.0.1-dev
 # OMEGA_USERNAME ?= N/A
-OMEGA_STATE ?= public
+OMEGA_STATE ?= dev
 EPSILON_APPS ?= calculation graph rpn code statistics probability solver atomic sequence regression reader settings external
 SUBMODULES_APPS = atomic rpn
 EPSILON_I18N ?= en fr nl pt it de es hu