diff --git a/.changeset/six-parents-know.md b/.changeset/six-parents-know.md
new file mode 100644
index 0000000..d7bb3e6
--- /dev/null
+++ b/.changeset/six-parents-know.md
@@ -0,0 +1,5 @@
+---
+"astro-icon": patch
+---
+
+Fixes an issue that caused installed `@iconify-json/*` packages to not be detected in production environments
diff --git a/packages/core/package.json b/packages/core/package.json
index 2cb02ed..b999239 100644
--- a/packages/core/package.json
+++ b/packages/core/package.json
@@ -49,8 +49,7 @@
   "dependencies": {
     "@iconify/tools": "^3.0.1",
     "@iconify/types": "^2.0.0",
-    "@iconify/utils": "^2.1.5",
-    "@skarab/detect-package-manager": "^1.0.0"
+    "@iconify/utils": "^2.1.5"
   },
   "devDependencies": {
     "@types/node": "^18.18.0",
diff --git a/packages/core/src/loaders/loadIconifyCollections.ts b/packages/core/src/loaders/loadIconifyCollections.ts
index ccb7ee7..f6e5627 100644
--- a/packages/core/src/loaders/loadIconifyCollections.ts
+++ b/packages/core/src/loaders/loadIconifyCollections.ts
@@ -6,10 +6,8 @@ import type {
 import type { AutoInstall } from "../../typings/iconify";
 
 import { readFile } from "node:fs/promises";
-import { detectAgent } from "@skarab/detect-package-manager";
 import { getIcons } from "@iconify/utils";
 import { loadCollectionFromFS } from "@iconify/utils/lib/loader/fs";
-import { fileURLToPath } from "node:url";
 import { promisify } from "node:util";
 import { exec } from "node:child_process";
 
@@ -89,29 +87,13 @@ export async function loadCollection(
 
 async function detectInstalledCollections(root: URL) {
   try {
-    const agent = await detectAgent(fileURLToPath(root));
     let packages: string[] = [];
-    if (!agent) {
-      const text = await readFile(new URL("./package.json", root), {
-        encoding: "utf8",
-      });
-      const { dependencies = {}, devDependencies = {} } = JSON.parse(text);
-      packages.push(...Object.keys(dependencies));
-      packages.push(...Object.keys(devDependencies));
-    } else {
-      const { stdout: text } = await execa(`${agent.name} list --json`);
-      const data = JSON.parse(text);
-      if (Array.isArray(data)) {
-        for (const { dependencies = {}, devDependencies = {} } of data) {
-          packages.push(...Object.keys(dependencies));
-          packages.push(...Object.keys(devDependencies));
-        }
-      } else {
-        const { dependencies = {}, devDependencies = {} } = data;
-        packages.push(...Object.keys(dependencies));
-        packages.push(...Object.keys(devDependencies));
-      }
-    }
+    const text = await readFile(new URL("./package.json", root), {
+      encoding: "utf8",
+    });
+    const { dependencies = {}, devDependencies = {} } = JSON.parse(text);
+    packages.push(...Object.keys(dependencies));
+    packages.push(...Object.keys(devDependencies));
     const collections = packages
       .filter((name) => name.startsWith("@iconify-json/"))
       .map((name) => name.replace("@iconify-json/", ""));
diff --git a/pnpm-lock.yaml b/pnpm-lock.yaml
index 8c13e6f..774bdc0 100644
--- a/pnpm-lock.yaml
+++ b/pnpm-lock.yaml
@@ -51,9 +51,6 @@ importers:
       "@iconify/utils":
         specifier: ^2.1.5
         version: 2.1.13
-      "@skarab/detect-package-manager":
-        specifier: ^1.0.0
-        version: 1.0.0
     devDependencies:
       "@types/node":
         specifier: ^18.18.0
@@ -1614,14 +1611,6 @@ packages:
     requiresBuild: true
     optional: true
 
-  /@skarab/detect-package-manager@1.0.0:
-    resolution:
-      {
-        integrity: sha512-CuU1x6LgkJIF+H8FCnKijx6DbWVP1Y7kqPk88LSxNe0ulbe3BZ37qd3AaX3t5vnFZESLFMcjQd2dlPhdvWNSdQ==,
-      }
-    engines: { node: ">=14", pnpm: ">=7" }
-    dev: false
-
   /@trysound/sax@0.2.0:
     resolution:
       {