diff --git a/scripts/nix-install-package.in b/scripts/nix-install-package.in
index e45337bcc..9414541d1 100755
--- a/scripts/nix-install-package.in
+++ b/scripts/nix-install-package.in
@@ -108,7 +108,7 @@ if ($interactive) {
 
 if (defined $binaryCacheURL) {
 
-    push @extraNixEnvArgs, "--option", "binary-caches", $binaryCacheURL;
+    push @extraNixEnvArgs, "--option", "extra-binary-caches", $binaryCacheURL;
 
 } else {