diff --git a/lib/internal/bootstrap/pre_execution.js b/lib/internal/bootstrap/pre_execution.js
index 23b328b14487e4..95814a79ecea2a 100644
--- a/lib/internal/bootstrap/pre_execution.js
+++ b/lib/internal/bootstrap/pre_execution.js
@@ -49,6 +49,8 @@ function prepareMainThreadExecution(expandArgv1 = false) {
 
   initializeHeapSnapshotSignalHandlers();
 
+  setupLateCodeInjector();
+
   // If the process is spawned with env NODE_CHANNEL_FD, it's probably
   // spawned by our child_process module, then initialize IPC.
   // This attaches some internal event listeners and creates:
@@ -456,6 +458,33 @@ function loadPreloadModules() {
   }
 }
 
+function lateCodeInjectorHandler() {
+  let resolvedAgent;
+
+  try {
+    resolvedAgent = require.resolve(process.env.NODE_LATE_ATTACH_AGENT);
+  } catch (err) {
+    return err; // to somehow use err
+  }
+
+  require(resolvedAgent).execute(function() {
+    delete require.cache[resolvedAgent];
+  });
+}
+
+function setupLateCodeInjector() {
+  const signal = process.env.NODE_LATE_ATTACH_SIGNAL;
+
+  if (!signal)
+    return;
+
+  require('internal/validators').validateSignalName(signal);
+
+  process.on(signal, () => {
+    lateCodeInjectorHandler();
+  });
+}
+
 module.exports = {
   patchProcessObject,
   setupCoverageHooks,