diff --git a/pkgs/os-specific/linux/kernel/linux-testing.nix b/pkgs/os-specific/linux/kernel/linux-testing.nix
index 06efc5da1ec4..eec306f2892c 100644
--- a/pkgs/os-specific/linux/kernel/linux-testing.nix
+++ b/pkgs/os-specific/linux/kernel/linux-testing.nix
@@ -3,7 +3,7 @@
 with lib;
 
 buildLinux (args // rec {
-  version = "5.12-rc4";
+  version = "5.12-rc6";
   extraMeta.branch = "5.12";
 
   # modDirVersion needs to be x.y.z, will always add .0
@@ -11,7 +11,7 @@ buildLinux (args // rec {
 
   src = fetchurl {
     url = "https://git.kernel.org/torvalds/t/linux-${version}.tar.gz";
-    sha256 = "06i6xnfbyn522pj9zksx6ka01yxwv8dsrb2z517grv682sp8j70k";
+    sha256 = "0w0zk2byimdbcvn8myqaq0ab6lyd43493fnkv9a1407dimpxb03d";
   };
 
   # Should the testing kernels ever be built on Hydra?