diff --git a/pkgs/by-name/po/pomerium/package.json b/pkgs/by-name/po/pomerium/package.json
deleted file mode 100644
index eb48ee5cab7b..000000000000
--- a/pkgs/by-name/po/pomerium/package.json
+++ /dev/null
@@ -1,61 +0,0 @@
-{
-  "name": "pomerium",
-  "version": "1.0.0",
-  "main": "src/index.tsx",
-  "license": "Apache-2.0",
-  "scripts": {
-    "build": "ts-node ./scripts/esbuild.ts",
-    "format": "prettier --write .",
-    "lint": "eslint .",
-    "watch": "ts-node ./scripts/esbuild.ts --watch"
-  },
-  "browserslist": {
-    "production": [
-      ">0.2%",
-      "not dead",
-      "not op_mini all"
-    ],
-    "development": [
-      "last 1 chrome version",
-      "last 1 firefox version",
-      "last 1 safari version"
-    ]
-  },
-  "dependencies": {
-    "@babel/core": "^7.0.0",
-    "@emotion/react": "^11.7.1",
-    "@emotion/styled": "^11.11.0",
-    "@fontsource/dm-mono": "^5.0.14",
-    "@fontsource/dm-sans": "^5.0.13",
-    "@mui/icons-material": "^5.14.9",
-    "@mui/material": "^5.4.0",
-    "lodash": "^4.17.21",
-    "markdown-to-jsx": "^7.2.1",
-    "react": "^17.0.2",
-    "react-dom": "^17.0.2",
-    "react-feather": "^2.0.10"
-  },
-  "devDependencies": {
-    "@trivago/prettier-plugin-sort-imports": "^4.2.1",
-    "@types/lodash": "^4.17.1",
-    "@types/node": "^20.12.11",
-    "@types/react": "^17.0.34",
-    "@types/react-dom": "^17.0.11",
-    "@typescript-eslint/eslint-plugin": "^5.10.2",
-    "@typescript-eslint/parser": "^5.59.11",
-    "esbuild": "^0.25.0",
-    "eslint": "7.32.0",
-    "eslint-config-prettier": "^8.3.0",
-    "eslint-plugin-react": "^7.28.0",
-    "prettier": "^2.4.1",
-    "ts-node": "^10.9.1",
-    "typescript": "^5.1.3"
-  },
-  "prettier": {
-    "importOrder": [
-      "^[./]"
-    ],
-    "importOrderSeparation": true,
-    "importOrderSortSpecifiers": true
-  }
-}
diff --git a/pkgs/by-name/po/pomerium/package.nix b/pkgs/by-name/po/pomerium/package.nix
index 29cdd4ffb67c..80dd0bd31fb4 100644
--- a/pkgs/by-name/po/pomerium/package.nix
+++ b/pkgs/by-name/po/pomerium/package.nix
@@ -1,10 +1,13 @@
 {
+  stdenv,
   buildGoModule,
   fetchFromGitHub,
   lib,
   envoy,
-  mkYarnPackage,
+  yarnConfigHook,
+  yarnBuildHook,
   fetchYarnDeps,
+  nodejs,
   nixosTests,
   pomerium-cli,
 }:
@@ -29,29 +32,27 @@ buildGoModule rec {
 
   vendorHash = "sha256-mOTjBH8VqsMdyW5jTIZ76bf55WnHw9XuUSh6zsBktt0=";
 
-  ui = mkYarnPackage {
+  ui = stdenv.mkDerivation {
+    pname = "pomerium-ui";
     inherit version;
     src = "${src}/ui";
 
-    packageJSON = ./package.json;
     offlineCache = fetchYarnDeps {
       yarnLock = "${src}/ui/yarn.lock";
-      sha256 = lib.fileContents ./yarn-hash;
+      hash = "sha256-V2nSSMvTCK+SYmEhTbLMArIOmNs/AgB5xfhQGx3e/x8=";
     };
 
-    buildPhase = ''
-      runHook preBuild
-      yarn --offline build
-      runHook postBuild
-    '';
+    nativeBuildInputs = [
+      yarnConfigHook
+      yarnBuildHook
+      nodejs
+    ];
 
     installPhase = ''
       runHook preInstall
-      cp -R deps/pomerium/dist $out
+      cp -R dist $out
       runHook postInstall
     '';
-
-    doDist = false;
   };
 
   subPackages = [
diff --git a/pkgs/by-name/po/pomerium/updater.sh b/pkgs/by-name/po/pomerium/updater.sh
index 0df47268ca96..4ba7ef103a74 100755
--- a/pkgs/by-name/po/pomerium/updater.sh
+++ b/pkgs/by-name/po/pomerium/updater.sh
@@ -1,5 +1,5 @@
 #! /usr/bin/env nix-shell
-#! nix-shell -i bash -p gnugrep coreutils curl wget jq nix-update prefetch-yarn-deps
+#! nix-shell -i bash -p gnugrep coreutils curl jq nix-update prefetch-yarn-deps
 
 set -euo pipefail
 pushd "$(dirname "${BASH_SOURCE[0]}")"
@@ -14,10 +14,6 @@ if [[ "$UPDATE_NIX_OLD_VERSION" == "$version" ]]; then
     exit 0
 fi
 
-rm -f package.json yarn.lock
-wget "$url/ui/yarn.lock" "$url/ui/package.json"
-echo $(prefetch-yarn-deps) > yarn-hash
-rm -f yarn.lock
-
 popd
 nix-update pomerium --version $version
+nix-update pomerium --version=skip --subpackage ui
diff --git a/pkgs/by-name/po/pomerium/yarn-hash b/pkgs/by-name/po/pomerium/yarn-hash
deleted file mode 100644
index 579ad09e4e27..000000000000
--- a/pkgs/by-name/po/pomerium/yarn-hash
+++ /dev/null
@@ -1 +0,0 @@
-07zzvqfinl7qqmwh00izvfc0xch2rjr4s8b1ca9ay26krd4d4sap