diff --git a/include/acpi/acpixf.h b/include/acpi/acpixf.h
index 77d71bd1be39abcc4e1d4528f26158b130fd1615..48d84f0d9547ad8d2c24057a9e780e74dec8045c 100644
--- a/include/acpi/acpixf.h
+++ b/include/acpi/acpixf.h
@@ -12,7 +12,7 @@
 
 /* Current ACPICA subsystem version in YYYYMMDD format */
 
-#define ACPI_CA_VERSION                 0x20180508
+#define ACPI_CA_VERSION                 0x20180531
 
 #include <acpi/acconfig.h>
 #include <acpi/actypes.h>