diff --git a/pkgs/applications/misc/endeavour/default.nix b/pkgs/applications/misc/endeavour/default.nix
index 18ff848fbcd..3c48efe66c4 100644
--- a/pkgs/applications/misc/endeavour/default.nix
+++ b/pkgs/applications/misc/endeavour/default.nix
@@ -5,7 +5,6 @@
 , meson
 , ninja
 , pkg-config
-, python3
 , wrapGAppsHook4
 , gettext
 , gnome
@@ -22,19 +21,19 @@
 , librest
 , json-glib
 , itstool
-, unstableGitUpdater
+, gitUpdater
 }:
 
 stdenv.mkDerivation rec {
   pname = "endeavour";
-  version = "unstable-2022-06-12";
+  version = "42.0";
 
   src = fetchFromGitLab {
     domain = "gitlab.gnome.org";
     owner = "World";
     repo = "Endeavour";
-    rev = "ad4e15f0b58860caf8c6d497795b83b594a9c3e5";
-    sha256 = "HRufLoZou9ssQ/qoDG8anhOAtl8IYvFpyjq/XJlsotQ=";
+    rev = "v${version}";
+    sha256 = "U91WAoyIeQ0WbFbOCrbFJjbWe2eT7b/VL2M1hNXxyzQ=";
   };
 
   patches = [
@@ -45,6 +44,20 @@ stdenv.mkDerivation rec {
       extraPrefix = "";
       name = "gnome-todo_meson-build.patch";
     })
+
+    # build: Fix building with -Werror=format-security
+    # https://gitlab.gnome.org/World/Endeavour/-/merge_requests/132
+    (fetchpatch {
+      url = "https://gitlab.gnome.org/World/Endeavour/-/commit/3bad03e90fcc28f6e3f87f2c90df5984dbeb0791.patch";
+      sha256 = "sha256-HRkNfhn+EH0Fc+KBDdX1Q+T9QWSctTOn1cvecP2N0zo=";
+    })
+
+    # build: Use GNOME module post_install()
+    # https://gitlab.gnome.org/World/Endeavour/-/merge_requests/135
+    (fetchpatch {
+      url = "https://gitlab.gnome.org/World/Endeavour/-/commit/a8daa1d8acd0a5da7aef54d6e16d8a585c71e555.patch";
+      sha256 = "sha256-zUTQ36eUMOY9ODAgwSKUhSlB9Cj0Yu/60KjFFW5fx2I=";
+    })
   ];
 
   nativeBuildInputs = [
@@ -52,7 +65,6 @@ stdenv.mkDerivation rec {
     ninja
     pkg-config
     gettext
-    python3
     wrapGAppsHook4
     itstool
   ];
@@ -75,14 +87,10 @@ stdenv.mkDerivation rec {
     json-glib # todoist
   ];
 
-  postPatch = ''
-    chmod +x build-aux/meson/meson_post_install.py
-    patchShebangs build-aux/meson/meson_post_install.py
-  '';
-
   passthru = {
-    updateScript = unstableGitUpdater {
-      url = "https://gitlab.gnome.org/World/Endeavour.git";
+    updateScript = gitUpdater {
+      inherit pname version;
+      rev-prefix = "v";
     };
   };