diff --git a/include/hvt_abi.h b/include/hvt_abi.h
index 52111b82..bc5f035d 100644
--- a/include/hvt_abi.h
+++ b/include/hvt_abi.h
@@ -41,7 +41,7 @@
  * in this file.
  */
 
-#define HVT_ABI_VERSION 1
+#define HVT_ABI_VERSION 2
 
 /*
  * Lowest virtual address at which guests can be loaded.
diff --git a/include/spt_abi.h b/include/spt_abi.h
index 2a391002..1d08e5be 100644
--- a/include/spt_abi.h
+++ b/include/spt_abi.h
@@ -38,7 +38,7 @@
  * in this file.
  */
 
-#define SPT_ABI_VERSION 1
+#define SPT_ABI_VERSION 2
 
 /*
  * Lowest virtual address at which guests can be loaded.