diff --git a/pkgs/os-specific/linux/kernel/hardened/patches.json b/pkgs/os-specific/linux/kernel/hardened/patches.json
index cdcea4e6f0b6..3fca2b822f0d 100644
--- a/pkgs/os-specific/linux/kernel/hardened/patches.json
+++ b/pkgs/os-specific/linux/kernel/hardened/patches.json
@@ -32,12 +32,12 @@
     "5.15": {
         "patch": {
             "extra": "-hardened1",
-            "name": "linux-hardened-5.15.19-hardened1.patch",
-            "sha256": "0nkwf7dzvgm30hl24g8rpk3raqcxlplga0ksk8f9w7s87axpr5lm",
-            "url": "https://github.com/anthraxx/linux-hardened/releases/download/5.15.19-hardened1/linux-hardened-5.15.19-hardened1.patch"
+            "name": "linux-hardened-5.15.21-hardened1.patch",
+            "sha256": "1j01mlyr53wry8n7bzg6pi4nilj3i9jpq5aml6f25fjckz5apll7",
+            "url": "https://github.com/anthraxx/linux-hardened/releases/download/5.15.21-hardened1/linux-hardened-5.15.21-hardened1.patch"
         },
-        "sha256": "0l70ckc0imnn7x9p9dawprzblszadk79468wx3zqz951yb4k5gh1",
-        "version": "5.15.19"
+        "sha256": "1lgvf3mrsbwjdjfvznbf5c3np76a7xxqr2rw7i6196ywsxnfnki9",
+        "version": "5.15.21"
     },
     "5.4": {
         "patch": {