diff --git a/pkgs/build-support/emacs/melpa.nix b/pkgs/build-support/emacs/melpa.nix
index 5eaa995b4126..a1f10ad31437 100644
--- a/pkgs/build-support/emacs/melpa.nix
+++ b/pkgs/build-support/emacs/melpa.nix
@@ -22,8 +22,8 @@ with lib;
 let
 
   packageBuild = fetchurl {
-    url = https://raw.githubusercontent.com/milkypostman/melpa/12a862e5c5c62ce627dab83d7cf2cca6e8b56c47/package-build.el;
-    sha256 = "1nviyyprypz7nmam9rwli4yv3kxh170glfbznryrp4czxkrjjdhk";
+    url = https://raw.githubusercontent.com/milkypostman/melpa/2b3eb31c077fcaff94b74b757c1ce17650333943/package-build.el;
+    sha256 = "1biwg2pqmmdz5iwqbjdszljazqymvgyyjcnc255nr6qz8mhnx67j";
   };
 
   fname = "${pname}-${version}";
diff --git a/pkgs/build-support/emacs/melpa2nix.el b/pkgs/build-support/emacs/melpa2nix.el
index d54e9d21e25e..858ffd7593bf 100644
--- a/pkgs/build-support/emacs/melpa2nix.el
+++ b/pkgs/build-support/emacs/melpa2nix.el
@@ -23,14 +23,14 @@
 
 (defun melpa2nix-package-build-archive (name version files)
   "Build a package archive for package NAME."
-  (pb/message "\n;;; %s\n" name)
+  (package-build--message "\n;;; %s\n" name)
   (let* ((start-time (current-time))
          (archive-entry (package-build-package name
                                                version
                                                files
                                                package-build-working-dir
                                                package-build-archive-dir)))
-    
-    (pb/message "Built in %.3fs, finished at %s"
-                (time-to-seconds (time-since start-time))
-                (current-time-string))))
+
+    (package-build--message "Built in %.3fs, finished at %s"
+                            (time-to-seconds (time-since start-time))
+                            (current-time-string))))