diff --git a/nongnu/packages/messaging.scm b/nongnu/packages/messaging.scm
index 12d88625..234e417f 100644
--- a/nongnu/packages/messaging.scm
+++ b/nongnu/packages/messaging.scm
@@ -37,7 +37,7 @@
 (define-public element-desktop
   (package
     (name "element-desktop")
-    (version "1.11.103")
+    (version "1.11.104")
     (source
      (origin
        (method url-fetch)
@@ -46,7 +46,7 @@
          "https://packages.riot.im/debian/pool/main/e/" name "/" name "_" version
          "_amd64.deb"))
        (sha256
-        (base32 "1apnj9n428lc9cw6jlmnqhcywqd6fnplkj3j5k731f2dzvzaifs6"))))
+        (base32 "1b1rzcsf0pdgccsl0cmrp9lnrcbhy50ygwkwik7hdnygr2721mbl"))))
     (supported-systems '("x86_64-linux"))
     (build-system chromium-binary-build-system)
     (arguments
@@ -83,7 +83,7 @@ its core.")
 (define-public signal-desktop
   (package
     (name "signal-desktop")
-    (version "7.57.0")
+    (version "7.58.0")
     (source
      (origin
        (method url-fetch)
@@ -92,7 +92,7 @@ its core.")
          "https://updates.signal.org/desktop/apt/pool/s/" name "/" name "_" version
          "_amd64.deb"))
        (sha256
-        (base32 "0xy4xfyx58v0869x0inypy9rgnbcxzrdnfh3r8qq00640wfj9j2c"))))
+        (base32 "1bhh9z7mclxlzq4pfs695pnkb5x36wm5ihniydvzqqi2g3xjbqam"))))
     (supported-systems '("x86_64-linux"))
     (build-system chromium-binary-build-system)
     (arguments
diff --git a/nongnu/packages/nvidia.scm b/nongnu/packages/nvidia.scm
index 86d4b26d..8e0b234d 100644
--- a/nongnu/packages/nvidia.scm
+++ b/nongnu/packages/nvidia.scm
@@ -228,9 +228,9 @@ ACTION==\"unbind\", SUBSYSTEM==\"pci\", ATTR{vendor}==\"0x10de\", ATTR{class}==\
 (define-public nvidia-driver
   (package
     (name "nvidia-driver")
-    (version "570.153.02")
+    (version "570.169")
     (source (nvidia-source
-             version "1dp1bpx4scx7lzqnajn75q5zjlbfvpjych3ils7zlxlmyvj8d20l"))
+             version "0r9phz9rv0n208f61lvv3m492387mjmqk4gph3ww7iawg53shcjz"))
     (build-system copy-build-system)
     (arguments
      (list #:modules '((guix build copy-build-system)
@@ -627,9 +627,9 @@ add @code{nvidia_drm.modeset=1} to @code{kernel-arguments} as well.")
 (define-public nvidia-settings
   (package
     (name "nvidia-settings")
-    (version "570.153.02")
+    (version "570.169")
     (source (nvidia-settings-source
-             name version "1qvvsrhlswpnv9aldqnynjch8y1x219ccsk3w4rfrw3swxm9qvp6"))
+             name version "15sxzczan9kq55hyiq73arls95lsdakpfbbzf4b6741fjfgd8kfh"))
     (build-system gnu-build-system)
     (arguments
      (list #:tests? #f ;no test suite
diff --git a/nonguix/transformations.scm b/nonguix/transformations.scm
index 90dab066..f3b5e771 100644
--- a/nonguix/transformations.scm
+++ b/nonguix/transformations.scm
@@ -2,6 +2,8 @@
 ;;; Copyright © 2025 Hilton Chain <hako@ultrarare.space>
 
 (define-module (nonguix transformations)
+  #:use-module (srfi srfi-1)
+  #:use-module (srfi srfi-26)
   #:use-module (guix channels)
   #:use-module (guix diagnostics)
   #:use-module (guix gexp)
@@ -74,10 +76,11 @@ FIXME: GUIX-SOURCE? is disabled by default due to performance issue."
                       (cons %nonguix-signing-key
                             (guix-configuration-authorized-keys config)))
                      (substitute-urls
-                      `(,@(guix-configuration-substitute-urls config)
-                        ,@(if substitutes?
-                              '("https://substitutes.nonguix.org")
-                              '()))))))))))
+                      (delete-duplicates
+                       `(,@(guix-configuration-substitute-urls config)
+                         ,@(if substitutes?
+                               '("https://substitutes.nonguix.org")
+                               '())))))))))))
 
 (define* (nonguix-transformation-linux #:key (linux linux)
                                        (firmware (list linux-firmware))
@@ -128,11 +131,13 @@ TODO: Xorg configuration."
     (operating-system
       (inherit os)
       (kernel-arguments
-       `("modprobe.blacklist=nouveau"
-         ,@(if kernel-mode-setting?
-               '("nvidia_drm.modeset=1")
-               '())
-         ,@(operating-system-user-kernel-arguments os)))
+       (delete-duplicates
+        (cons* "modprobe.blacklist=nouveau"
+               (string-append
+                "nvidia_drm.modeset=" (if kernel-mode-setting? "1" "0"))
+               (remove
+                (cut string-prefix? "nvidia_drm.modeset=" <>)
+                (operating-system-user-kernel-arguments os)))))
       (services
        `(,(or (assoc-ref %presets driver)
               (leave