diff --git a/pkgs/desktops/gnome-3/3.20/apps/evolution/src.nix b/pkgs/desktops/gnome-3/3.20/apps/evolution/src.nix
index c68ee65cb8b..9c55a6b60e2 100644
--- a/pkgs/desktops/gnome-3/3.20/apps/evolution/src.nix
+++ b/pkgs/desktops/gnome-3/3.20/apps/evolution/src.nix
@@ -1,10 +1,11 @@
 # Autogenerated by maintainers/scripts/gnome.sh update
 
-fetchurl: {
-  name = "evolution-3.20.2";
+fetchurl: rec {
+  major = "3.20";
+  name = "evolution-${major}.4";
 
   src = fetchurl {
-    url = mirror://gnome/sources/evolution/3.20/evolution-3.20.2.tar.xz;
-    sha256 = "66fa6e18c4e6a29c44870d5786e4dbb82507a8254bca9e27e802625081fca630";
+    url = "mirror://gnome/sources/evolution/${major}/${name}.tar.xz";
+    sha256 = "1g1nai6jz0irz94d06vx8gbwbzdp7r53qjxvjfhdqhlhnhy76a9c";
   };
 }