diff --git a/pkgs/by-name/gu/guix/missing-cstdint-include.patch b/pkgs/by-name/gu/guix/missing-cstdint-include.patch
deleted file mode 100644
index 4799744d1043..000000000000
--- a/pkgs/by-name/gu/guix/missing-cstdint-include.patch
+++ /dev/null
@@ -1,24 +0,0 @@
-From bdf4159dd5c1cf925512c0eb8490846c084e3c8c Mon Sep 17 00:00:00 2001
-From: Reepca Russelstein
-Date: Tue, 24 Jun 2025 22:35:04 -0500
-Subject: [PATCH] nix: libutil: add <cstdint> include to seccomp.hh.
-
-* nix/libutil/seccomp.hh (<cstdint>): add include of header.
-
-Change-Id: I0a0b2892d81dbab662eda1ba80f4736178d70c65
----
- nix/libutil/seccomp.hh | 1 +
- 1 file changed, 1 insertion(+)
-
-diff --git a/nix/libutil/seccomp.hh b/nix/libutil/seccomp.hh
-index 634dfad5f8..a4b449fc66 100644
---- a/nix/libutil/seccomp.hh
-+++ b/nix/libutil/seccomp.hh
-@@ -4,6 +4,7 @@
- #include <linux/audit.h> /* For AUDIT_ARCH_* */
- #include <linux/seccomp.h>
- #include <linux/filter.h>
-+#include <cstdint>
- 
- 
- /* This file provides two preprocessor macros (among other things):
diff --git a/pkgs/by-name/gu/guix/package.nix b/pkgs/by-name/gu/guix/package.nix
index 445449d7577e..fe9d042f5a46 100644
--- a/pkgs/by-name/gu/guix/package.nix
+++ b/pkgs/by-name/gu/guix/package.nix
@@ -40,18 +40,14 @@
 }:
 stdenv.mkDerivation (finalAttrs: {
   pname = "guix";
-  version = "1.5.0";
+  version = "1.5.0-unstable-2026-08-23";
 
   src = fetchgit {
     url = "https://codeberg.org/guix/guix.git";
-    tag = "v${finalAttrs.version}";
-    hash = "sha256-/g8JMUGM5GaZjtPLnl4vlrBNYMxSTjsHUDdhKLtHaQA=";
+    rev = "bf8a5bce1bdbddc2a0097e153ef06210d637e398";
+    hash = "sha256-Emd26l9buF1P7Dj14ulT6W6lrNC3PSTY4steU1I7T84=";
   };
 
-  patches = [
-    ./missing-cstdint-include.patch
-  ];
-
   postPatch = ''
     sed nix/local.mk -i -E \
       -e "s|^sysvinitservicedir = .*$|sysvinitservicedir = $out/etc/init.d|" \
@@ -162,7 +158,7 @@ stdenv.mkDerivation (finalAttrs: {
     '';
     homepage = "https://guix.gnu.org/";
     donationPage = "https://guix.gnu.org/donate/";
-    changelog = "https://codeberg.org/guix/guix/raw/tag/v${finalAttrs.version}/NEWS";
+    changelog = "https://codeberg.org/guix/guix/raw/commit/${finalAttrs.src.rev}/NEWS";
     license = lib.licenses.gpl3Plus;
     mainProgram = "guix";
     maintainers = with lib.maintainers; [