diff --git a/core/resources/build.properties b/core/resources/build.properties
index fce6927bd7..b0ee3fda6d 100644
--- a/core/resources/build.properties
+++ b/core/resources/build.properties
@@ -1,7 +1,7 @@
 
 # The OpenRocket build version
 
-build.version=19-xx-alpha10
+build.version=19-xx-alpha-12
 
 
 # The source of the package.  When building a package for a specific