diff --git a/pkgs/by-name/vt/vtsls/package.nix b/pkgs/by-name/vt/vtsls/package.nix
index a4739e8b5b43..c1999351dc10 100644
--- a/pkgs/by-name/vt/vtsls/package.nix
+++ b/pkgs/by-name/vt/vtsls/package.nix
@@ -54,7 +54,7 @@ stdenv.mkDerivation (finalAttrs: {
   patches = [ ./vtsls-build-patch.patch ];
 
   # Skips manual confirmations during build
-  CI = true;
+  env.CI = true;
 
   buildPhase = ''
     runHook preBuild