diff --git a/pkgs/os-specific/linux/kernel/kernels-org.json b/pkgs/os-specific/linux/kernel/kernels-org.json
index bc585f07c0216..3506d0937af80 100644
--- a/pkgs/os-specific/linux/kernel/kernels-org.json
+++ b/pkgs/os-specific/linux/kernel/kernels-org.json
@@ -4,39 +4,39 @@
         "hash": "sha256:0i29ga9lzqd4zcsbr4bbb122i8nyfhcalihnq3bgsg04dwb36s19"
     },
     "6.1": {
-        "version": "6.1.101",
-        "hash": "sha256:0k5kjb2n78dcfpqqj8n76fxqbmifs2gqd2z1g9had7s2d2m9yigi"
+        "version": "6.1.102",
+        "hash": "sha256:1v4p4i8pfg4i6v90dr7m65npkxjnqv3fxcj8zs3pbb8y84xzk98v"
     },
     "5.15": {
-        "version": "5.15.163",
-        "hash": "sha256:00mkipkhz0i5xld7kyaxcj8cj8faw4gmjl5fribg832nn7ccfpq2"
+        "version": "5.15.164",
+        "hash": "sha256:11linb9jzarr8wz0vim3g9gkhi5ldqm82bkpl5xs9f34xpx9hq7c"
     },
     "5.10": {
-        "version": "5.10.222",
-        "hash": "sha256:1jshn64g165rdshyjvq38ni6pkbskp50048pbz407fss7f00cbbv"
+        "version": "5.10.223",
+        "hash": "sha256:189b3yl4lsjzh6qpza0phj8hgsvnyh38cgrd70rnqw3rddmdh2fa"
     },
     "5.4": {
-        "version": "5.4.280",
-        "hash": "sha256:0hix0dywf2ybvzxkijjsjmkrj7sx61hwq6mg1wqsq317p1zccxm9"
+        "version": "5.4.281",
+        "hash": "sha256:1ckja83km101h2dwlp86xrnnlzdzvjly48iywhy53xric3kw7824"
     },
     "4.19": {
-        "version": "4.19.318",
-        "hash": "sha256:14vl0288apl76rvxa9yxfggrc4600bjsn4gw097m4gy5ldiaapqd"
+        "version": "4.19.319",
+        "hash": "sha256:0c7bhb31hpbbw1is1ykppk9lm0x025yyd4hrmlg1s6yg75rxqkal"
     },
     "6.6": {
-        "version": "6.6.42",
-        "hash": "sha256:10z6fjvpiv3l11rpsd6fgi7dr6a3d38c6zlp8ihffx6pjz1ch0c8"
+        "version": "6.6.43",
+        "hash": "sha256:0pha226h5011kl5r2iiddxi0rib3xraslmcdjjnil2kq38d3pn0a"
     },
     "6.8": {
         "version": "6.8.12",
         "hash": "sha256:0fb0m0fv4521g63gq04d7lm6hy8169s1rykiav5bkd99s9b1kcqr"
     },
     "6.9": {
-        "version": "6.9.11",
-        "hash": "sha256:1q8kyn9cxc1ykf3cvifmfqk2p2p4x53l7h704hh92gichgh89pyy"
+        "version": "6.9.12",
+        "hash": "sha256:08ngskni7d9wi93vlwcmbdg7sb2jl1drhhzn62k9nsrg1r7crrss"
     },
     "6.10": {
-        "version": "6.10.1",
-        "hash": "sha256:0szpkhrwfqwj068vz032daf3zycv5c93gjxiisjziifi3kyrs43h"
+        "version": "6.10.2",
+        "hash": "sha256:0w4vsb0c8bp34j90l89qms50nx6r6mmyf23jbvyar9fbv46m5n3k"
     }
 }
diff --git a/pkgs/os-specific/linux/kernel/linux-rt-5.15.nix b/pkgs/os-specific/linux/kernel/linux-rt-5.15.nix
index 127d7e6635138..070a5714ee83e 100644
--- a/pkgs/os-specific/linux/kernel/linux-rt-5.15.nix
+++ b/pkgs/os-specific/linux/kernel/linux-rt-5.15.nix
@@ -6,7 +6,7 @@
 , ... } @ args:
 
 let
-  version = "5.15.160-rt77"; # updated by ./update-rt.sh
+  version = "5.15.163-rt78"; # updated by ./update-rt.sh
   branch = lib.versions.majorMinor version;
   kversion = builtins.elemAt (lib.splitString "-" version) 0;
 in buildLinux (args // {
@@ -19,14 +19,14 @@ in buildLinux (args // {
 
   src = fetchurl {
     url = "mirror://kernel/linux/kernel/v5.x/linux-${kversion}.tar.xz";
-    sha256 = "018v19a7rhzc4szybzzn86jlnk42x7jm6xkadfd2d3xq6f7727pl";
+    sha256 = "00mkipkhz0i5xld7kyaxcj8cj8faw4gmjl5fribg832nn7ccfpq2";
   };
 
   kernelPatches = let rt-patch = {
     name = "rt";
     patch = fetchurl {
       url = "mirror://kernel/linux/kernel/projects/rt/${branch}/older/patch-${version}.patch.xz";
-      sha256 = "0id4m1k1xq84bxgnchm8r2iwfqw6nacv5n1ksgyzj6q6v66ik3wk";
+      sha256 = "030aycnrcnjhylkqj0wrfi992v2l26v17rgvxl16514zpdjmiv1x";
     };
   }; in [ rt-patch ] ++ kernelPatches;
 
diff --git a/pkgs/os-specific/linux/kernel/update-mainline.py b/pkgs/os-specific/linux/kernel/update-mainline.py
index bf5001ee378aa..79ac283faab6e 100755
--- a/pkgs/os-specific/linux/kernel/update-mainline.py
+++ b/pkgs/os-specific/linux/kernel/update-mainline.py
@@ -1,5 +1,6 @@
 #!/usr/bin/env nix-shell
 #!nix-shell -i python3 -p "python3.withPackages (ps: [ ps.beautifulsoup4 ps.lxml ps.packaging ])"
+from itertools import groupby
 import json
 import os
 import pathlib
@@ -11,7 +12,7 @@
 
 from bs4 import BeautifulSoup, NavigableString, Tag
 from packaging.version import parse as parse_version, Version
-from typing import List
+
 
 HERE = pathlib.Path(__file__).parent
 ROOT = HERE.parent.parent.parent.parent
@@ -41,7 +42,7 @@ def parse_release(release: Tag) -> KernelRelease | None:
     except KeyError:
         return None
 
-    version = columns[1].get_text().rstrip(" [EOL]")
+    version = parse_version(columns[1].get_text().rstrip(" [EOL]"))
     date = columns[2].get_text()
     link = columns[3].find("a")
     if link is not None and isinstance(link, Tag):
@@ -59,13 +60,12 @@ def parse_release(release: Tag) -> KernelRelease | None:
     )
 
 
-def get_branch(version: str):
+def get_branch(version: Version):
     # This is a testing kernel.
-    if "rc" in version:
+    if version.is_prerelease:
         return "testing"
     else:
-        major, minor, *_ = version.split(".")
-        return f"{major}.{minor}"
+        return f"{version.major}.{version.minor}"
 
 
 def get_hash(kernel: KernelRelease):
@@ -113,11 +113,11 @@ def main():
 
     oldest_branch = get_oldest_branch()
 
-    for kernel in parsed_releases:
-        branch = get_branch(kernel.version)
+    for (branch, kernels) in groupby(parsed_releases, lambda kernel: get_branch(kernel.version)):
+        kernel = max(kernels, key=lambda kernel: kernel.version)
         nixpkgs_branch = branch.replace(".", "_")
 
-        old_version = all_kernels.get(branch, {}).get("version")
+        old_version = parse_version(all_kernels.get(branch, {}).get("version"))
         if old_version == kernel.version:
             print(f"linux_{nixpkgs_branch}: {kernel.version} is latest, skipping...")
             continue
@@ -144,7 +144,7 @@ def main():
         print(message, file=sys.stderr)
 
         all_kernels[branch] = {
-            "version": kernel.version,
+            "version": str(kernel.version),
             "hash": get_hash(kernel),
         }