diff --git a/.changeset/early-pans-serve.md b/.changeset/early-pans-serve.md
new file mode 100644
index 00000000..7e116408
--- /dev/null
+++ b/.changeset/early-pans-serve.md
@@ -0,0 +1,5 @@
+---
+'@aziontech/builder': patch
+---
+
+fix(builder): resolve azion polyfills package specifier to filesystem path in esbuild plugin
diff --git a/packages/builder/src/bundlers/esbuild/plugins/azion-polyfills/azion-polyfills.ts b/packages/builder/src/bundlers/esbuild/plugins/azion-polyfills/azion-polyfills.ts
index 892b74c9..ee5cd6d0 100644
--- a/packages/builder/src/bundlers/esbuild/plugins/azion-polyfills/azion-polyfills.ts
+++ b/packages/builder/src/bundlers/esbuild/plugins/azion-polyfills/azion-polyfills.ts
@@ -1,8 +1,11 @@
 import { PluginBuild } from 'esbuild';
 import fs from 'fs';
+import { createRequire } from 'module';
 import path from 'path';
 import azionLibs from '../../../../helpers/azion-local-polyfills';
 
+const requireCustom = createRequire(import.meta.url);
+
 /**
  * ESBuild Azion Module Plugin for polyfilling node modules.
  * @param {boolean} isProduction Parameter to identify whether the build is dev or prod
@@ -89,8 +92,10 @@ const ESBuildAzionModulePlugin = (isProduction: boolean) => {
           throw new Error(`Could not resolve module: ${args.path}`);
         }
 
-        const contents = await fs.promises.readFile(resolved, 'utf8');
-        const resolveDir = path.dirname(resolved);
+        // Resolve package exports (e.g., @aziontech/builder/polyfills/...) to a filesystem path
+        const resolvedPath = requireCustom.resolve(resolved);
+        const contents = await fs.promises.readFile(resolvedPath, 'utf8');
+        const resolveDir = path.dirname(resolvedPath);
 
         return {
           loader: 'js',