diff --git a/README.adoc b/README.adoc
index bc30e05..b4c5368 100644
--- a/README.adoc
+++ b/README.adoc
@@ -9,7 +9,7 @@
 :toclevels: 6
 :toc-title:
 
-The perfect emulation setup to study and modify the <<linux-kernel>>, kernel modules, <<qemu-buildroot-setup,QEMU>> and <<gem5-buildroot-setup,gem5>>. Highly automated. Thoroughly documented. <<gdb>> and <<kgdb>> just work. Powered by <<about-the-qemu-buildroot-setup,Buildroot>>. "Tested" in Ubuntu 18.04 host, x86 and ARM guests with kernel v4.19.
+The perfect emulation setup to study and modify the <<linux-kernel>>, kernel modules, <<qemu-buildroot-setup,QEMU>> and <<gem5-buildroot-setup,gem5>>. Highly automated. Thoroughly documented. <<gdb>> and <<kgdb>> just work. Powered by <<about-the-qemu-buildroot-setup,Buildroot>>. "Tested" in Ubuntu 18.04 host, x86 and ARM guests with kernel v4.20.
 
 TL;DR: <<qemu-buildroot-setup-getting-started>>
 
diff --git a/submodules/linux b/submodules/linux
index 84df952..8fe28cb 160000
--- a/submodules/linux
+++ b/submodules/linux
@@ -1 +1 @@
-Subproject commit 84df9525b0c27f3ebc2ebb1864fa62a97fdedb7d
+Subproject commit 8fe28cb58bcb235034b64cbbb7550a8a43fd88be