diff --git a/pkgs/os-specific/linux/kernel/linux-testing.nix b/pkgs/os-specific/linux/kernel/linux-testing.nix
index 6c06354f3943..81945290bf66 100644
--- a/pkgs/os-specific/linux/kernel/linux-testing.nix
+++ b/pkgs/os-specific/linux/kernel/linux-testing.nix
@@ -1,13 +1,13 @@
 { stdenv, buildPackages, fetchurl, perl, buildLinux, libelf, utillinux, ... } @ args:
 
 buildLinux (args // rec {
-  version = "4.20-rc5";
-  modDirVersion = "4.20.0-rc5";
+  version = "4.20-rc6";
+  modDirVersion = "4.20.0-rc6";
   extraMeta.branch = "4.20";
 
   src = fetchurl {
     url = "https://git.kernel.org/torvalds/t/linux-${version}.tar.gz";
-    sha256 = "0dixig8vismk40x4a719psyi39nqcv7yrisjdnj3s2ym9rljyypz";
+    sha256 = "1hmcwlf3lcim4z265pqz6v4na6072xcqzrnq57wacznmg31m7y0c";
   };
 
   # Should the testing kernels ever be built on Hydra?