diff --git a/pkgs/os-specific/linux/kernel/common-config.nix b/pkgs/os-specific/linux/kernel/common-config.nix
index bbd743b4dfc2..4b1318d91159 100644
--- a/pkgs/os-specific/linux/kernel/common-config.nix
+++ b/pkgs/os-specific/linux/kernel/common-config.nix
@@ -285,7 +285,7 @@ let
 
     video = {
       DRM_LEGACY = no;
-      NOUVEAU_LEGACY_CTX_SUPPORT = whenAtLeast "5.2" no;
+      NOUVEAU_LEGACY_CTX_SUPPORT = whenBetween "5.2" "6.3" no;
 
       # Allow specifying custom EDID on the kernel command line
       DRM_LOAD_EDID_FIRMWARE = yes;
diff --git a/pkgs/os-specific/linux/kernel/linux-testing.nix b/pkgs/os-specific/linux/kernel/linux-testing.nix
index cef442ad20ca..356f811974fb 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 = "6.2-rc6";
+  version = "6.3-rc1";
   extraMeta.branch = lib.versions.majorMinor version;
 
   # 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";
-    hash = "sha256-rEpJYw5O6OHSwNY8LxlCsw0p9+u9BUjTQ8FsB6+fLbc=";
+    hash = "sha256-oZhG9dYlRthT4TbRNuJ+/Kw/mRuGTIu2E9Dw5ge+xCo=";
   };
 
   # Should the testing kernels ever be built on Hydra?