diff --git a/CHANGELOG.md b/CHANGELOG.md
index 4e6ac91..f205e49 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -4,6 +4,10 @@ Changes are identified by the date of the released firmware including them. If
 you are running System76 Open Firmware, opening the boot menu will show this
 date followed by an underscore and a short git revision.
 
+## 2021-03-11
+
+- lemp9: Fix backlight ACPI issues and TPM interrupt
+
 ## 2021-03-08
 
 - oryp6, oryp7: Improved fan curve
diff --git a/coreboot b/coreboot
index 62f0b28..285cdbd 160000
--- a/coreboot
+++ b/coreboot
@@ -1 +1 @@
-Subproject commit 62f0b289874c6ec911c8ab22f1d0ba1a4b65d798
+Subproject commit 285cdbd31316c3418cc81b57d0ba846c64a17510