diff --git a/pkgs/by-name/gn/gnome-calendar/package.nix b/pkgs/by-name/gn/gnome-calendar/package.nix
index b457a6c1b67d..c071e94830cc 100644
--- a/pkgs/by-name/gn/gnome-calendar/package.nix
+++ b/pkgs/by-name/gn/gnome-calendar/package.nix
@@ -2,6 +2,7 @@
   stdenv,
   lib,
   fetchurl,
+  blueprint-compiler,
   meson,
   ninja,
   pkg-config,
@@ -22,14 +23,15 @@
 
 stdenv.mkDerivation rec {
   pname = "gnome-calendar";
-  version = "48.1";
+  version = "49.rc";
 
   src = fetchurl {
     url = "mirror://gnome/sources/gnome-calendar/${lib.versions.major version}/gnome-calendar-${version}.tar.xz";
-    hash = "sha256-Bs6t1cAL6ONYGB1CHs8mgs4K6i/LEtkDsw0pyjMonwI=";
+    hash = "sha256-gOLNpazuDytcfiFmY0+1nv5zTtmD375cU/AbEIiAHzI=";
   };
 
   nativeBuildInputs = [
+    blueprint-compiler
     meson
     ninja
     pkg-config