diff --git a/.github/workflows/benchmarks.yml b/.github/workflows/benchmarks.yml
index 94a4cf24b..db25ed78c 100644
--- a/.github/workflows/benchmarks.yml
+++ b/.github/workflows/benchmarks.yml
@@ -15,7 +15,7 @@ jobs:
       fail-fast: true
       matrix:
         node: [20]
-        os: [ubuntu-latest, macos-latest]
+        os: [ubuntu-latest, macos-latest, windows-latest]
     runs-on: ${{ matrix.os }}
     steps:
       - name: Checkout repository
@@ -37,6 +37,7 @@ jobs:
           git submodule update --init --recursive
           npm ci
           npm run build
-          bash run-ci-benchmarks.sh
+          echo 'Running o1js benchmarks.'
+          node --enable-source-maps --stack-trace-limit=1000 src/build/run.js benchmark/runners/with-cloud-history.ts --bundle >>benchmarks.log 2>&1
           cat benchmarks.log >> $GITHUB_STEP_SUMMARY
         shell: bash
diff --git a/benchmark/benchmark.ts b/benchmark/benchmark.ts
index 17ae0d981..c091fd64c 100644
--- a/benchmark/benchmark.ts
+++ b/benchmark/benchmark.ts
@@ -112,7 +112,7 @@ function logResult(
   result: BenchmarkResult,
   previousResult?: BenchmarkResult
 ): void {
-  console.log(result.label + `\n`);
+  console.log(result.label);
   console.log(`time: ${resultToString(result)}`);
 
   if (previousResult === undefined) return;
diff --git a/src/build/build-example.js b/src/build/build-example.js
index 2f3a37e37..966bf6088 100644
--- a/src/build/build-example.js
+++ b/src/build/build-example.js
@@ -2,6 +2,7 @@ import fs from 'fs/promises';
 import path from 'path';
 import ts from 'typescript';
 import esbuild from 'esbuild';
+import { platform } from 'node:process';
 
 export { buildAndImport, build, buildOne };
 
@@ -11,7 +12,7 @@ async function buildAndImport(srcPath, { keepFile = false }) {
   try {
     importedModule = await import(absPath);
   } finally {
-    if (!keepFile) await fs.unlink(absPath);
+    if (!keepFile) await fs.unlink(absPath.replace(/^file:\/\/\/*/, ''));
   }
   return importedModule;
 }
@@ -44,6 +45,9 @@ async function build(srcPath, isWeb = false) {
   });
 
   let absPath = path.resolve('.', outfile);
+  if (platform === 'win32') {
+    absPath = 'file:///' + absPath;
+  }
   return absPath;
 }
 
@@ -70,6 +74,9 @@ async function buildOne(srcPath) {
   });
 
   let absPath = path.resolve('.', outfile);
+  if (platform === 'win32') {
+    absPath = 'file:///' + absPath;
+  }
   return absPath;
 }
 
@@ -104,13 +111,13 @@ function typescriptPlugin(tsConfig) {
 }
 
 function makeNodeModulesExternal() {
-  let isNodeModule = /^[^./]|^\.[^./]|^\.\.[^/]/;
+  let isNodeModule = /^[^./\\]|^\.[^./\\]|^\.\.[^/\\]/;
   return {
     name: 'plugin-external',
     setup(build) {
       build.onResolve({ filter: isNodeModule }, ({ path }) => ({
         path,
-        external: true,
+        external: !(platform === 'win32' && path.endsWith('index.js')),
       }));
     },
   };
diff --git a/src/build/build-node.js b/src/build/build-node.js
index 4708bf5a8..4ba289033 100644
--- a/src/build/build-node.js
+++ b/src/build/build-node.js
@@ -1,4 +1,5 @@
 import path from 'node:path';
+import { platform } from 'node:process';
 import { fileURLToPath } from 'node:url';
 import esbuild from 'esbuild';
 import minimist from 'minimist';
@@ -46,13 +47,13 @@ async function buildNode({ production }) {
 }
 
 function makeNodeModulesExternal() {
-  let isNodeModule = /^[^./]|^\.[^./]|^\.\.[^/]/;
+  let isNodeModule = /^[^./\\]|^\.[^./\\]|^\.\.[^/\\]/;
   return {
     name: 'plugin-external',
     setup(build) {
       build.onResolve({ filter: isNodeModule }, ({ path }) => ({
         path,
-        external: true,
+        external: !(platform === 'win32' && path.endsWith('index.js')),
       }));
     },
   };