diff --git a/_config.yml b/_config.yml
index 62cdd93..e8dcbb6 100644
--- a/_config.yml
+++ b/_config.yml
@@ -14,7 +14,7 @@ title: "Functional Programming and Scientific Analysis and Visualisation"
 
 # Life cycle stage of the lesson
 # possible values: "pre-alpha", "alpha", "beta", "stable"
-life_cycle: "pre-alpha"
+life_cycle: "beta"
 
 #------------------------------------------------------------
 # Generic settings (should not need to change).