diff --git a/pkgs/servers/dico/default.nix b/pkgs/servers/dico/default.nix
index c530929f79e4..8958daa1a70a 100644
--- a/pkgs/servers/dico/default.nix
+++ b/pkgs/servers/dico/default.nix
@@ -2,11 +2,11 @@
 , guile, python, pcre, libffi, groff }:
 
 stdenv.mkDerivation rec {
-  name = "dico-2.4";
+  name = "dico-2.5";
 
   src = fetchurl {
     url = "mirror://gnu/dico/${name}.tar.xz";
-    sha256 = "13m7vahfbdj7hb38bjgd4cmfswavvxrcpppj9n4m4rar3wyzg52g";
+    sha256 = "0szm3z4xvq0pjj8kxl4paq63byamf281kzn1la0cdm5ngavypxxq";
   };
 
   hardeningDisable = [ "format" ];