diff --git a/nixos/modules/services/cluster/kubernetes/kubelet.nix b/nixos/modules/services/cluster/kubernetes/kubelet.nix
index ca7b524081f63..9ab5d0baf8c7e 100644
--- a/nixos/modules/services/cluster/kubernetes/kubelet.nix
+++ b/nixos/modules/services/cluster/kubernetes/kubelet.nix
@@ -336,10 +336,7 @@ in
           [
             gitMinimal
             openssh
-            # TODO (#409339): remove this patch. We had to add it to avoid a mass rebuild
-            # for the 25.05 release. Once the staging cycle referenced in the above PR completes,
-            # switch back to plain util-linux.
-            util-linux.withPatches
+            util-linuxMinimal
             iproute2
             ethtool
             thin-provisioning-tools
diff --git a/pkgs/applications/networking/cluster/k3s/builder.nix b/pkgs/applications/networking/cluster/k3s/builder.nix
index e2662f9894524..6d23342c91363 100644
--- a/pkgs/applications/networking/cluster/k3s/builder.nix
+++ b/pkgs/applications/networking/cluster/k3s/builder.nix
@@ -332,11 +332,6 @@ let
       ldflags = versionldflags;
     }).overrideAttrs
       overrideContainerdAttrs;
-
-  # TODO (#409339): remove this patch. We had to add it to avoid a mass rebuild
-  # for the 25.05 release. Once the staging cycle referenced in the above PR completes,
-  # switch back to plain util-linuxMinimal.
-  k3sUtilLinux = util-linuxMinimal.withPatches;
 in
 buildGoModule rec {
   pname = "k3s";
@@ -383,7 +378,7 @@ buildGoModule rec {
     ipset
     bridge-utils
     ethtool
-    k3sUtilLinux # kubelet wants 'nsenter' and 'mount' from util-linux: https://github.com/kubernetes/kubernetes/issues/26093#issuecomment-705994388
+    util-linuxMinimal # kubelet wants 'nsenter' and 'mount' from util-linux: https://github.com/kubernetes/kubernetes/issues/26093#issuecomment-705994388
     conntrack-tools
     runc
     bash
diff --git a/pkgs/by-name/ut/util-linux/package.nix b/pkgs/by-name/ut/util-linux/package.nix
index 702cc21ebd6a3..92b7785d53f08 100644
--- a/pkgs/by-name/ut/util-linux/package.nix
+++ b/pkgs/by-name/ut/util-linux/package.nix
@@ -202,18 +202,6 @@ stdenv.mkDerivation (finalPackage: rec {
     '';
 
   passthru = {
-    # TODO (#409339): Remove this hack. We had to add it to avoid a mass rebuild
-    # for the 25.05 release to fix Kubernetes. Once the staging cycle referenced
-    # in the above PR completes, this passthru and all consumers of it should go away.
-    withPatches = finalPackage.overrideAttrs (prev: {
-      patches = lib.unique (
-        prev.patches or [ ]
-        ++ [
-          ./fix-mount-regression.patch
-        ]
-      );
-    });
-
     updateScript = gitUpdater {
       # No nicer place to find latest release.
       url = "https://git.kernel.org/pub/scm/utils/util-linux/util-linux.git";