diff --git a/API/hermes/TimerStats.cpp b/API/hermes/TimerStats.cpp
index b6d156d938c..ac14c2ea681 100644
--- a/API/hermes/TimerStats.cpp
+++ b/API/hermes/TimerStats.cpp
@@ -263,6 +263,8 @@ class TimedRuntime final : public jsi::RuntimeDecorator<jsi::Runtime> {
     return RD::callAsConstructor(func, args, count);
   }
 
+  void queueMicrotask(const jsi::Function & /*callback*/) override {}
+
   bool drainMicrotasks(int maxMicrotasksHint) override {
     auto timer = rts_.incomingTimer("drainMicrotasks");
     return RD::drainMicrotasks(maxMicrotasksHint);
diff --git a/API/hermes/TracingRuntime.cpp b/API/hermes/TracingRuntime.cpp
index b2c6afca316..ac20dbfd979 100644
--- a/API/hermes/TracingRuntime.cpp
+++ b/API/hermes/TracingRuntime.cpp
@@ -185,6 +185,8 @@ jsi::Value TracingRuntime::evaluateJavaScript(
   return res;
 }
 
+void TracingRuntime::queueMicrotask(const jsi::Function &callback) {}
+
 bool TracingRuntime::drainMicrotasks(int maxMicrotasksHint) {
   auto res = RD::drainMicrotasks(maxMicrotasksHint);
   trace_.emplace_back<SynthTrace::DrainMicrotasksRecord>(
diff --git a/API/hermes/TracingRuntime.h b/API/hermes/TracingRuntime.h
index 2256a64ba4b..ed1d8644024 100644
--- a/API/hermes/TracingRuntime.h
+++ b/API/hermes/TracingRuntime.h
@@ -43,6 +43,7 @@ class TracingRuntime : public jsi::RuntimeDecorator<jsi::Runtime> {
       const std::shared_ptr<const jsi::Buffer> &buffer,
       const std::string &sourceURL) override;
 
+  void queueMicrotask(const jsi::Function &callback) override;
   bool drainMicrotasks(int maxMicrotasksHint = -1) override;
 
   jsi::Object createObject() override;
diff --git a/API/hermes/hermes.cpp b/API/hermes/hermes.cpp
index a40cdb13e63..5bde94f02ea 100644
--- a/API/hermes/hermes.cpp
+++ b/API/hermes/hermes.cpp
@@ -573,6 +573,7 @@ class HermesRuntimeImpl final : public HermesRuntime,
   jsi::Value evaluateJavaScript(
       const std::shared_ptr<const jsi::Buffer> &buffer,
       const std::string &sourceURL) override;
+  void queueMicrotask(const jsi::Function &callback) override;
   bool drainMicrotasks(int maxMicrotasksHint = -1) override;
   jsi::Object global() override;
 
@@ -1502,6 +1503,8 @@ jsi::Value HermesRuntimeImpl::evaluateJavaScript(
   return evaluateJavaScriptWithSourceMap(buffer, nullptr, sourceURL);
 }
 
+void HermesRuntimeImpl::queueMicrotask(const jsi::Function & /*callback*/) {}
+
 bool HermesRuntimeImpl::drainMicrotasks(int maxMicrotasksHint) {
   if (runtime_.hasMicrotaskQueue()) {
     checkStatus(runtime_.drainJobs());
diff --git a/API/hermes_abi/HermesABIRuntimeWrapper.cpp b/API/hermes_abi/HermesABIRuntimeWrapper.cpp
index e927ea8145c..3b10668386d 100644
--- a/API/hermes_abi/HermesABIRuntimeWrapper.cpp
+++ b/API/hermes_abi/HermesABIRuntimeWrapper.cpp
@@ -710,6 +710,8 @@ class HermesABIRuntimeWrapper : public Runtime {
     return evaluateJavaScript(sjp, sjp->sourceURL());
   }
 
+  void queueMicrotask(const Function & /*callback*/) override {}
+
   bool drainMicrotasks(int maxMicrotasksHint = -1) override {
     return unwrap(vtable_->drain_microtasks(abiRt_, maxMicrotasksHint));
   }
diff --git a/API/hermes_sandbox/HermesSandboxRuntime.cpp b/API/hermes_sandbox/HermesSandboxRuntime.cpp
index fb817b9560d..790bd29f581 100644
--- a/API/hermes_sandbox/HermesSandboxRuntime.cpp
+++ b/API/hermes_sandbox/HermesSandboxRuntime.cpp
@@ -1701,6 +1701,8 @@ class HermesSandboxRuntimeImpl : public facebook::hermes::HermesSandboxRuntime,
     return evaluateJavaScript(sjp, sjp->sourceURL());
   }
 
+  void queueMicrotask(const Function & /*callback*/) override {}
+
   bool drainMicrotasks(int maxMicrotasksHint = -1) override {
     SandboxBoolOrError resBoolOrError{
         vt_.drain_microtasks(this, srt_, maxMicrotasksHint)};
diff --git a/API/jsi/jsi/decorator.h b/API/jsi/jsi/decorator.h
index 7bddd1fad80..6f4351a420d 100644
--- a/API/jsi/jsi/decorator.h
+++ b/API/jsi/jsi/decorator.h
@@ -126,6 +126,9 @@ class RuntimeDecorator : public Base, private jsi::Instrumentation {
       const std::shared_ptr<const PreparedJavaScript>& js) override {
     return plain().evaluatePreparedJavaScript(js);
   }
+  void queueMicrotask(const jsi::Function& callback) override {
+    return plain().queueMicrotask(callback);
+  }
   bool drainMicrotasks(int maxMicrotasksHint) override {
     return plain().drainMicrotasks(maxMicrotasksHint);
   }
@@ -544,6 +547,10 @@ class WithRuntimeDecorator : public RuntimeDecorator<Plain, Base> {
     Around around{with_};
     return RD::evaluatePreparedJavaScript(js);
   }
+  void queueMicrotask(const Function& callback) override {
+    Around around{with_};
+    RD::queueMicrotask(callback);
+  }
   bool drainMicrotasks(int maxMicrotasksHint) override {
     Around around{with_};
     return RD::drainMicrotasks(maxMicrotasksHint);
diff --git a/API/jsi/jsi/jsi.h b/API/jsi/jsi/jsi.h
index 962dae93609..276fdef6c86 100644
--- a/API/jsi/jsi/jsi.h
+++ b/API/jsi/jsi/jsi.h
@@ -209,6 +209,11 @@ class JSI_EXPORT Runtime {
   virtual Value evaluatePreparedJavaScript(
       const std::shared_ptr<const PreparedJavaScript>& js) = 0;
 
+  // Queues a microtask in the JavaScript VM internal Microtask (a.k.a. Job in
+  // ECMA262) queue, to be executed when the host drains microtasks in
+  // its event loop implementation.
+  virtual void queueMicrotask(const jsi::Function& callback) = 0;
+
   /// Drain the JavaScript VM internal Microtask (a.k.a. Job in ECMA262) queue.
   ///
   /// \param maxMicrotasksHint a hint to tell an implementation that it should