diff --git a/pkgs/desktops/gnome/apps/gnome-calendar/default.nix b/pkgs/desktops/gnome/apps/gnome-calendar/default.nix
index f3491139ab95..b5c90c93ba59 100644
--- a/pkgs/desktops/gnome/apps/gnome-calendar/default.nix
+++ b/pkgs/desktops/gnome/apps/gnome-calendar/default.nix
@@ -21,11 +21,11 @@
 
 stdenv.mkDerivation rec {
   pname = "gnome-calendar";
-  version = "45.beta";
+  version = "45.rc";
 
   src = fetchurl {
     url = "mirror://gnome/sources/${pname}/${lib.versions.major version}/${pname}-${version}.tar.xz";
-    sha256 = "mXMSqtx636LilvdmKs5n0+FSfkOEbzp5ktBbtjPPNdw=";
+    sha256 = "oQNH0NeP+Df5fu/uZhCRgOooWJiwSY7feenM7zMoEAk=";
   };
 
   nativeBuildInputs = [