diff --git a/devicemodel/bios/MD5SUM_ovmf b/devicemodel/bios/MD5SUM_ovmf
index 822bc6a81..de933da92 100644
--- a/devicemodel/bios/MD5SUM_ovmf
+++ b/devicemodel/bios/MD5SUM_ovmf
@@ -1,2 +1,2 @@
-58d0a3355c87efbedbfc6bc9f64e7e3f  OVMF.fd
-192633bf78d037e977cca5c84c7e2cc2  OVMF_debug.fd
+fc3ab032f7fb693b7b29d20d39643128  OVMF.fd
+48b94e48b11f9d1a9793bd7674984c50  OVMF_debug.fd
diff --git a/devicemodel/bios/OVMF.fd b/devicemodel/bios/OVMF.fd
index 4f5af3b47..9e588c7e8 100644
Binary files a/devicemodel/bios/OVMF.fd and b/devicemodel/bios/OVMF.fd differ
diff --git a/devicemodel/bios/OVMF_debug.fd b/devicemodel/bios/OVMF_debug.fd
index a129b54f4..1006fa7ad 100644
Binary files a/devicemodel/bios/OVMF_debug.fd and b/devicemodel/bios/OVMF_debug.fd differ
diff --git a/devicemodel/bios/SHA512SUM_ovmf b/devicemodel/bios/SHA512SUM_ovmf
index 83c34c134..e4e321cf1 100644
--- a/devicemodel/bios/SHA512SUM_ovmf
+++ b/devicemodel/bios/SHA512SUM_ovmf
@@ -1,2 +1,2 @@
-caf7e97c687d773cf9b5bbd1c75d2b0093a6a5aeeb8cae463727fc31fe2bd88b3c0d41ac9dbf52998bcad678e374ce759db98eb8a28ab22289662ac76278bcc9  OVMF.fd
-0c5499f1b5562b0966688a77796e610e695b6e3fd137ee36bdd3ec7c3c70de61f25c9daf6a86c8e6129b79cb74ddf7b4c8085c46d7144a3ff15ae4db89abcbae  OVMF_debug.fd
+5e21f9c2553ea5c4d9a79cec08aeb4b30c1fd762019bff9ad0a9210852a05cbb9cfbdaa427e67d3769d70a562ae9e51be034fc369a2313825b8323187621a80c  OVMF.fd
+071aa8d30fcf0def5fd04ee77dff0b947cfb9c187805d5b2fd62d018d0cd0f7c9b956fdfc94a208c8ac04ac647019ae143a7715f57891c256bf0e064fc47fc1b  OVMF_debug.fd
diff --git a/devicemodel/bios/changelog_ovmf.txt b/devicemodel/bios/changelog_ovmf.txt
index b31f3cf51..779a35361 100644
--- a/devicemodel/bios/changelog_ovmf.txt
+++ b/devicemodel/bios/changelog_ovmf.txt
@@ -1,3 +1,11 @@
+OVMF release v2.1
+
+- Enable AcrnLapicTimerDxe
+- Enable AcrnTscTimerLib
+- Lapic Timer Driver
+- Change LVT timer register structure of Lapic
+- Add AcrnTscTimerLib
+
 OVMF release v2.0
 
 - Add Platform GOP Policy