diff --git a/maintainers/scripts/update.nix b/maintainers/scripts/update.nix
index 7192f6e3b234..60c6113bf70f 100755
--- a/maintainers/scripts/update.nix
+++ b/maintainers/scripts/update.nix
@@ -126,7 +126,7 @@ let
 
   packageData = package: {
     name = package.name;
-    pname = lib.getName package;
+    pname = pkgs.lib.getName package;
     updateScript = map builtins.toString (pkgs.lib.toList package.updateScript);
   };
 
diff --git a/pkgs/common-updater/scripts/update-source-version b/pkgs/common-updater/scripts/update-source-version
index 0a436ff02a3d..d051a0f75c13 100755
--- a/pkgs/common-updater/scripts/update-source-version
+++ b/pkgs/common-updater/scripts/update-source-version
@@ -93,7 +93,7 @@ if [ -z "$oldUrl" ]; then
 fi
 
 drvName=$(nix-instantiate $systemArg --eval -E "with import ./. {}; lib.getName $attr" | tr -d '"')
-oldVersion=$(nix-instantiate $systemArg --eval -E "with import ./. {}; $attr.${versionKey} or lib.getVersion $attr" | tr -d '"')
+oldVersion=$(nix-instantiate $systemArg --eval -E "with import ./. {}; $attr.${versionKey} or (lib.getVersion $attr)" | tr -d '"')
 
 if [ -z "$drvName" -o -z "$oldVersion" ]; then
     die "Couldn't evaluate name and version from '$attr.name'!"