diff --git a/.changeset/red-years-pump.md b/.changeset/red-years-pump.md
new file mode 100644
index 000000000..a2410e40b
--- /dev/null
+++ b/.changeset/red-years-pump.md
@@ -0,0 +1,5 @@
+---
+'@electric-sql/pglite': patch
+---
+
+Do not set process.exitCode at all
diff --git a/packages/pglite/package.json b/packages/pglite/package.json
index 4f0e9b34f..9aa1d494d 100644
--- a/packages/pglite/package.json
+++ b/packages/pglite/package.json
@@ -125,7 +125,7 @@
     "test": "pnpm test:basic && pnpm test:node",
     "test:basic": "pnpm test:clean && vitest tests/*.test.js tests/*.test.ts tests/**/*.test.js tests/**/*.test.ts",
     "test:web": "pnpm test:clean && concurrently -s first --hide 1 --prefix none -k \"sleep 2 && vitest --fileParallelism false tests/targets/web/*.test.web.*\" \"npx http-server --port 3334 ./\"",
-    "test:bun": "pnpm test:clean && pnpm bun test --timeout 15000 tests/basic.test.js tests/pgvector.test.js tests/live.test.js tests/targets/runtimes/node-fs.test.js",
+    "test:bun": "pnpm test:clean && bun test --timeout 15000 tests/basic.test.ts tests/live.test.ts tests/targets/runtimes/node-fs.test.js",
     "test:deno": "cd tests/targets/deno && deno task test",
     "test:node": "pnpm test:clean && pnpm vitest tests/targets/runtimes/node-*.test.js",
     "test:runtimes": "pnpm test:bun && pnpm test:node",
diff --git a/packages/pglite/src/pglite.ts b/packages/pglite/src/pglite.ts
index 517a4376a..f10161849 100644
--- a/packages/pglite/src/pglite.ts
+++ b/packages/pglite/src/pglite.ts
@@ -820,25 +820,18 @@ export class PGlite
     this.#ready = false
     this.#running = false
 
-    const exitCode = pglUtils.pgliteProc.exitCode
     try {
       // exit the runtime. since we're using `noExitRuntime: true` on our module,
       // we need to do this explicitly
-      // this sets process.exitCode to 0
       this.mod!._emscripten_force_exit(0)
-      // clear mod to release memory
-      this.mod = undefined
     } catch (e: any) {
       this.#log(e)
       if (e.status !== 0) {
         this.#log('Error when exiting', e.toString())
       }
     } finally {
-      try {
-        pglUtils.pgliteProc.exitCode = exitCode
-      } catch {
-        // some envs do not allow setting the exitCode, swallow
-      }
+      // clear mod to release memory
+      this.mod = undefined
     }
   }
 
diff --git a/packages/pglite/tests/basic.test.ts b/packages/pglite/tests/basic.test.ts
index c21c34cfd..a4928642c 100644
--- a/packages/pglite/tests/basic.test.ts
+++ b/packages/pglite/tests/basic.test.ts
@@ -800,6 +800,12 @@ await testEsmCjsAndDTC(async (importType) => {
       expect(process.exitCode).toEqual(origExitCode)
     })
 
+    it('restores undefined process.exitCode on close', async () => {
+      expect(process.exitCode).toBeUndefined()
+      await db.close()
+      expect(process.exitCode).toBeUndefined()
+    })
+
     it('restores process.exitCode on close', async () => {
       const origExitCode = process.exitCode
       process.exitCode = 42
@@ -812,18 +818,6 @@ await testEsmCjsAndDTC(async (importType) => {
       }
     })
 
-    it('restores undefined process.exitCode on close', async () => {
-      const origExitCode = process.exitCode
-      process.exitCode = undefined
-
-      try {
-        await db.close()
-        expect(process.exitCode).toEqual(undefined)
-      } finally {
-        process.exitCode = origExitCode
-      }
-    })
-
     it("arrays with NULL elements should return null, not string 'NULL'", async () => {
       const pg = await PGlite.create()
 
diff --git a/postgres-pglite b/postgres-pglite
index 6dab6d9c3..b133782cd 160000
--- a/postgres-pglite
+++ b/postgres-pglite
@@ -1 +1 @@
-Subproject commit 6dab6d9c37607f32b56d4778b6de95ac0d7438fc
+Subproject commit b133782cd759f08b3aeb263b80a963b39c7b7af1