diff --git a/Config.mk b/Config.mk
index b3d48e49c7..86a4999246 100644
--- a/Config.mk
+++ b/Config.mk
@@ -214,7 +214,7 @@ OVMF_UPSTREAM_URL ?= https://xenbits.xen.org/git-http/ovmf.git
 OVMF_UPSTREAM_REVISION ?= ba91d0292e593df8528b66f99c1b0b14fadc8e16
 
 QEMU_UPSTREAM_URL ?= https://xenbits.xen.org/git-http/qemu-xen.git
-QEMU_UPSTREAM_REVISION ?= master
+QEMU_UPSTREAM_REVISION ?= e064f42c80be6f6ff8c12dcb2a663bdf70f965f6
 
 MINIOS_UPSTREAM_URL ?= https://xenbits.xen.org/git-http/mini-os.git
 MINIOS_UPSTREAM_REVISION ?= b6f79f5f44cf69044079c042b88fe9d75367642e