diff --git a/Makefile b/Makefile
index dbd32b471..a4a22f929 100644
--- a/Makefile
+++ b/Makefile
@@ -28,7 +28,7 @@ all:
 
 .include "Mk/defaults.mk"
 
-CORE_ABI?=	22.7
+CORE_ABI?=	23.1
 CORE_MESSAGE?=	Carry on my wayward son
 CORE_NAME?=	opnsense-devel
 CORE_NICKNAME?=	Not Yet