diff --git a/pkgs/by-name/wa/warpgate/package.nix b/pkgs/by-name/wa/warpgate/package.nix
index c48ec8265167..523b9683c006 100644
--- a/pkgs/by-name/wa/warpgate/package.nix
+++ b/pkgs/by-name/wa/warpgate/package.nix
@@ -21,6 +21,8 @@ rustPlatform.buildRustPackage (
       patches = [ ./web-ui-package-json.patch ];
 
       npmDepsHash = "sha256-jgsNF93DkEVgPGzdi192HKoSHPYhdrtog28jZvOLK6E=";
+      # Fix peer dependency conflicts with ESLint 9.
+      npmFlags = [ "--legacy-peer-deps" ];
 
       nativeBuildInputs = [ openapi-generator-cli ];