diff --git a/ReactCommon/fabric/imagemanager/ImageResponseObserverCoordinator.cpp b/ReactCommon/fabric/imagemanager/ImageResponseObserverCoordinator.cpp
index 57b72966e..c4b5a3179 100644
--- a/ReactCommon/fabric/imagemanager/ImageResponseObserverCoordinator.cpp
+++ b/ReactCommon/fabric/imagemanager/ImageResponseObserverCoordinator.cpp
@@ -21,16 +21,16 @@ ImageResponseObserverCoordinator::~ImageResponseObserverCoordinator() {}
 void ImageResponseObserverCoordinator::addObserver(
     ImageResponseObserver *observer) const {
   ImageResponse::Status status = [this] {
-    std::shared_lock<folly::SharedMutex> read(mutex_);
+    std::shared_lock<better::shared_mutex> read(mutex_);
     return status_;
   }();
 
   if (status == ImageResponse::Status::Loading) {
-    std::unique_lock<folly::SharedMutex> write(mutex_);
+    std::unique_lock<better::shared_mutex> write(mutex_);
     observers_.push_back(observer);
   } else if (status == ImageResponse::Status::Completed) {
     ImageResponse imageResponseCopy = [this] {
-      std::unique_lock<folly::SharedMutex> read(mutex_);
+      std::unique_lock<better::shared_mutex> read(mutex_);
       return ImageResponse(imageData_);
     }();
     observer->didReceiveImage(imageResponseCopy);
@@ -41,7 +41,7 @@ void ImageResponseObserverCoordinator::addObserver(
 
 void ImageResponseObserverCoordinator::removeObserver(
     ImageResponseObserver *observer) const {
-  std::unique_lock<folly::SharedMutex> write(mutex_);
+  std::unique_lock<better::shared_mutex> write(mutex_);
 
   auto position = std::find(observers_.begin(), observers_.end(), observer);
   if (position != observers_.end()) {
@@ -52,7 +52,7 @@ void ImageResponseObserverCoordinator::removeObserver(
 void ImageResponseObserverCoordinator::nativeImageResponseProgress(
     float progress) const {
   std::vector<ImageResponseObserver *> observersCopy = [this] {
-    std::shared_lock<folly::SharedMutex> read(mutex_);
+    std::shared_lock<better::shared_mutex> read(mutex_);
     return observers_;
   }();
 
@@ -64,19 +64,19 @@ void ImageResponseObserverCoordinator::nativeImageResponseProgress(
 void ImageResponseObserverCoordinator::nativeImageResponseComplete(
     const ImageResponse &imageResponse) const {
   {
-    std::unique_lock<folly::SharedMutex> write(mutex_);
+    std::unique_lock<better::shared_mutex> write(mutex_);
     imageData_ = imageResponse.getImage();
     status_ = ImageResponse::Status::Completed;
   }
 
   std::vector<ImageResponseObserver *> observersCopy = [this] {
-    std::shared_lock<folly::SharedMutex> read(mutex_);
+    std::shared_lock<better::shared_mutex> read(mutex_);
     return observers_;
   }();
 
   for (auto observer : observersCopy) {
     ImageResponse imageResponseCopy = [this] {
-      std::unique_lock<folly::SharedMutex> read(mutex_);
+      std::unique_lock<better::shared_mutex> read(mutex_);
       return ImageResponse(imageData_);
     }();
     observer->didReceiveImage(imageResponseCopy);
@@ -85,12 +85,12 @@ void ImageResponseObserverCoordinator::nativeImageResponseComplete(
 
 void ImageResponseObserverCoordinator::nativeImageResponseFailed() const {
   {
-    std::unique_lock<folly::SharedMutex> write(mutex_);
+    std::unique_lock<better::shared_mutex> write(mutex_);
     status_ = ImageResponse::Status::Failed;
   }
 
   std::vector<ImageResponseObserver *> observersCopy = [this] {
-    std::shared_lock<folly::SharedMutex> read(mutex_);
+    std::shared_lock<better::shared_mutex> read(mutex_);
     return observers_;
   }();
 
diff --git a/ReactCommon/fabric/imagemanager/ImageResponseObserverCoordinator.h b/ReactCommon/fabric/imagemanager/ImageResponseObserverCoordinator.h
index b5b22e402..1f0500ac6 100644
--- a/ReactCommon/fabric/imagemanager/ImageResponseObserverCoordinator.h
+++ b/ReactCommon/fabric/imagemanager/ImageResponseObserverCoordinator.h
@@ -10,8 +10,7 @@
 #include <react/imagemanager/ImageResponse.h>
 #include <react/imagemanager/ImageResponseObserver.h>
 
-#include <folly/SharedMutex.h>
-#include <shared_mutex>
+#include <better/mutex.h>
 #include <vector>
 
 namespace facebook {
@@ -84,7 +83,7 @@ class ImageResponseObserverCoordinator {
   /*
    * Observer and data mutex.
    */
-  mutable folly::SharedMutex mutex_;
+  mutable better::shared_mutex mutex_;
 };
 
 } // namespace react
diff --git a/ReactCommon/fabric/uimanager/ShadowTree.cpp b/ReactCommon/fabric/uimanager/ShadowTree.cpp
index 87d48e6e1..b008825bb 100644
--- a/ReactCommon/fabric/uimanager/ShadowTree.cpp
+++ b/ReactCommon/fabric/uimanager/ShadowTree.cpp
@@ -149,7 +149,7 @@ bool ShadowTree::tryCommit(
 
   {
     // Reading `rootShadowNode_` in shared manner.
-    std::shared_lock<folly::SharedMutex> lock(commitMutex_);
+    std::shared_lock<better::shared_mutex> lock(commitMutex_);
     oldRootShadowNode = rootShadowNode_;
   }
 
@@ -169,7 +169,7 @@ bool ShadowTree::tryCommit(
 
   {
     // Updating `rootShadowNode_` in unique manner if it hasn't changed.
-    std::unique_lock<folly::SharedMutex> lock(commitMutex_);
+    std::unique_lock<better::shared_mutex> lock(commitMutex_);
 
     if (rootShadowNode_ != oldRootShadowNode) {
       return false;
diff --git a/ReactCommon/fabric/uimanager/ShadowTree.h b/ReactCommon/fabric/uimanager/ShadowTree.h
index 41f328292..328119197 100644
--- a/ReactCommon/fabric/uimanager/ShadowTree.h
+++ b/ReactCommon/fabric/uimanager/ShadowTree.h
@@ -5,9 +5,8 @@
 
 #pragma once
 
-#include <folly/SharedMutex.h>
+#include <better/mutex.h>
 #include <memory>
-#include <shared_mutex>
 
 #include <react/components/root/RootComponentDescriptor.h>
 #include <react/components/root/RootShadowNode.h>
@@ -84,7 +83,7 @@ class ShadowTree final {
   void emitLayoutEvents(const ShadowViewMutationList &mutations) const;
 
   const SurfaceId surfaceId_;
-  mutable folly::SharedMutex commitMutex_;
+  mutable better::shared_mutex commitMutex_;
   mutable SharedRootShadowNode rootShadowNode_; // Protected by `commitMutex_`.
   mutable int revision_{1}; // Protected by `commitMutex_`.
   ShadowTreeDelegate const *delegate_;
diff --git a/ReactCommon/fabric/uimanager/ShadowTreeRegistry.cpp b/ReactCommon/fabric/uimanager/ShadowTreeRegistry.cpp
index 24babca90..9275b50ba 100644
--- a/ReactCommon/fabric/uimanager/ShadowTreeRegistry.cpp
+++ b/ReactCommon/fabric/uimanager/ShadowTreeRegistry.cpp
@@ -9,14 +9,14 @@ namespace facebook {
 namespace react {
 
 void ShadowTreeRegistry::add(std::unique_ptr<ShadowTree> &&shadowTree) const {
-  std::unique_lock<folly::SharedMutex> lock(mutex_);
+  std::unique_lock<better::shared_mutex> lock(mutex_);
 
   registry_.emplace(shadowTree->getSurfaceId(), std::move(shadowTree));
 }
 
 std::unique_ptr<ShadowTree> ShadowTreeRegistry::remove(
     SurfaceId surfaceId) const {
-  std::unique_lock<folly::SharedMutex> lock(mutex_);
+  std::unique_lock<better::shared_mutex> lock(mutex_);
 
   auto iterator = registry_.find(surfaceId);
   auto shadowTree = std::unique_ptr<ShadowTree>(iterator->second.release());
@@ -27,7 +27,7 @@ std::unique_ptr<ShadowTree> ShadowTreeRegistry::remove(
 bool ShadowTreeRegistry::visit(
     SurfaceId surfaceId,
     std::function<void(const ShadowTree &shadowTree)> callback) const {
-  std::shared_lock<folly::SharedMutex> lock(mutex_);
+  std::shared_lock<better::shared_mutex> lock(mutex_);
 
   auto iterator = registry_.find(surfaceId);
 
diff --git a/ReactCommon/fabric/uimanager/ShadowTreeRegistry.h b/ReactCommon/fabric/uimanager/ShadowTreeRegistry.h
index 24ac33a88..06549953c 100644
--- a/ReactCommon/fabric/uimanager/ShadowTreeRegistry.h
+++ b/ReactCommon/fabric/uimanager/ShadowTreeRegistry.h
@@ -5,8 +5,7 @@
 
 #pragma once
 
-#include <folly/SharedMutex.h>
-#include <shared_mutex>
+#include <better/mutex.h>
 
 #include <react/core/ReactPrimitives.h>
 #include <react/uimanager/ShadowTree.h>
@@ -49,7 +48,7 @@ class ShadowTreeRegistry final {
       std::function<void(const ShadowTree &shadowTree)> callback) const;
 
  private:
-  mutable folly::SharedMutex mutex_;
+  mutable better::shared_mutex mutex_;
   mutable std::unordered_map<SurfaceId, std::unique_ptr<ShadowTree>>
       registry_; // Protected by `mutex_`.
 };