diff --git a/React/Base/RCTBatchedBridge.m b/React/Base/RCTBatchedBridge.mm
similarity index 99%
rename from React/Base/RCTBatchedBridge.m
rename to React/Base/RCTBatchedBridge.mm
index cc62cb566..02b525601 100644
--- a/React/Base/RCTBatchedBridge.m
+++ b/React/Base/RCTBatchedBridge.mm
@@ -47,7 +47,7 @@ typedef NS_ENUM(NSUInteger, RCTBridgeFields) {
 
 @implementation RCTBatchedBridge
 {
-  BOOL _wasBatchActive;
+  std::atomic_bool _wasBatchActive;
   NSMutableArray<dispatch_block_t> *_pendingCalls;
   NSDictionary<NSString *, RCTModuleData *> *_moduleDataByName;
   NSArray<RCTModuleData *> *_moduleDataByID;
diff --git a/React/React.xcodeproj/project.pbxproj b/React/React.xcodeproj/project.pbxproj
index 2d4888f88..49216dcc4 100644
--- a/React/React.xcodeproj/project.pbxproj
+++ b/React/React.xcodeproj/project.pbxproj
@@ -72,7 +72,7 @@
 		14C2CA711B3AC63800E6CBB2 /* RCTModuleMethod.m in Sources */ = {isa = PBXBuildFile; fileRef = 14C2CA701B3AC63800E6CBB2 /* RCTModuleMethod.m */; };
 		14C2CA741B3AC64300E6CBB2 /* RCTModuleData.mm in Sources */ = {isa = PBXBuildFile; fileRef = 14C2CA731B3AC64300E6CBB2 /* RCTModuleData.mm */; };
 		14C2CA761B3AC64F00E6CBB2 /* RCTFrameUpdate.m in Sources */ = {isa = PBXBuildFile; fileRef = 14C2CA751B3AC64F00E6CBB2 /* RCTFrameUpdate.m */; };
-		14C2CA781B3ACB0400E6CBB2 /* RCTBatchedBridge.m in Sources */ = {isa = PBXBuildFile; fileRef = 14C2CA771B3ACB0400E6CBB2 /* RCTBatchedBridge.m */; };
+		14C2CA781B3ACB0400E6CBB2 /* RCTBatchedBridge.mm in Sources */ = {isa = PBXBuildFile; fileRef = 14C2CA771B3ACB0400E6CBB2 /* RCTBatchedBridge.mm */; };
 		14F3620D1AABD06A001CE568 /* RCTSwitch.m in Sources */ = {isa = PBXBuildFile; fileRef = 14F362081AABD06A001CE568 /* RCTSwitch.m */; };
 		14F3620E1AABD06A001CE568 /* RCTSwitchManager.m in Sources */ = {isa = PBXBuildFile; fileRef = 14F3620A1AABD06A001CE568 /* RCTSwitchManager.m */; };
 		14F484561AABFCE100FDF6B9 /* RCTSliderManager.m in Sources */ = {isa = PBXBuildFile; fileRef = 14F484551AABFCE100FDF6B9 /* RCTSliderManager.m */; };
@@ -87,7 +87,7 @@
 		2D3B5E931D9B087300451313 /* RCTErrorInfo.m in Sources */ = {isa = PBXBuildFile; fileRef = 3EDCA8A41D3591E700450C31 /* RCTErrorInfo.m */; };
 		2D3B5E941D9B087900451313 /* RCTBundleURLProvider.m in Sources */ = {isa = PBXBuildFile; fileRef = 68EFE4ED1CF6EB3900A1DE13 /* RCTBundleURLProvider.m */; };
 		2D3B5E951D9B087C00451313 /* RCTAssert.m in Sources */ = {isa = PBXBuildFile; fileRef = 83CBBA4B1A601E3B00E9B192 /* RCTAssert.m */; };
-		2D3B5E961D9B088500451313 /* RCTBatchedBridge.m in Sources */ = {isa = PBXBuildFile; fileRef = 14C2CA771B3ACB0400E6CBB2 /* RCTBatchedBridge.m */; };
+		2D3B5E961D9B088500451313 /* RCTBatchedBridge.mm in Sources */ = {isa = PBXBuildFile; fileRef = 14C2CA771B3ACB0400E6CBB2 /* RCTBatchedBridge.mm */; };
 		2D3B5E971D9B089000451313 /* RCTBridge.m in Sources */ = {isa = PBXBuildFile; fileRef = 83CBBA5F1A601EAA00E9B192 /* RCTBridge.m */; };
 		2D3B5E981D9B089500451313 /* RCTConvert.m in Sources */ = {isa = PBXBuildFile; fileRef = 83CBBACB1A6023D300E9B192 /* RCTConvert.m */; };
 		2D3B5E991D9B089A00451313 /* RCTDisplayLink.m in Sources */ = {isa = PBXBuildFile; fileRef = 3D1E68D91CABD13900DD7465 /* RCTDisplayLink.m */; };
@@ -1268,7 +1268,7 @@
 		14C2CA721B3AC64300E6CBB2 /* RCTModuleData.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = RCTModuleData.h; sourceTree = "<group>"; };
 		14C2CA731B3AC64300E6CBB2 /* RCTModuleData.mm */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.objcpp; path = RCTModuleData.mm; sourceTree = "<group>"; };
 		14C2CA751B3AC64F00E6CBB2 /* RCTFrameUpdate.m */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.objc; path = RCTFrameUpdate.m; sourceTree = "<group>"; };
-		14C2CA771B3ACB0400E6CBB2 /* RCTBatchedBridge.m */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.objc; path = RCTBatchedBridge.m; sourceTree = "<group>"; };
+		14C2CA771B3ACB0400E6CBB2 /* RCTBatchedBridge.mm */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.objcpp; path = RCTBatchedBridge.mm; sourceTree = "<group>"; };
 		14F362071AABD06A001CE568 /* RCTSwitch.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = RCTSwitch.h; sourceTree = "<group>"; };
 		14F362081AABD06A001CE568 /* RCTSwitch.m */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.objc; path = RCTSwitch.m; sourceTree = "<group>"; };
 		14F362091AABD06A001CE568 /* RCTSwitchManager.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = RCTSwitchManager.h; sourceTree = "<group>"; };
@@ -1735,7 +1735,7 @@
 			children = (
 				83CBBA4A1A601E3B00E9B192 /* RCTAssert.h */,
 				83CBBA4B1A601E3B00E9B192 /* RCTAssert.m */,
-				14C2CA771B3ACB0400E6CBB2 /* RCTBatchedBridge.m */,
+				14C2CA771B3ACB0400E6CBB2 /* RCTBatchedBridge.mm */,
 				83CBBA5E1A601EAA00E9B192 /* RCTBridge.h */,
 				83CBBA5F1A601EAA00E9B192 /* RCTBridge.m */,
 				3D0976C01E97399A00B9C6DD /* RCTBridge+JavaScriptCore.h */,
@@ -2479,7 +2479,7 @@
 				2D3B5E951D9B087C00451313 /* RCTAssert.m in Sources */,
 				2D3B5EB61D9B091400451313 /* RCTExceptionsManager.m in Sources */,
 				2D3B5EEB1D9B09D000451313 /* RCTTabBarItem.m in Sources */,
-				2D3B5E961D9B088500451313 /* RCTBatchedBridge.m in Sources */,
+				2D3B5E961D9B088500451313 /* RCTBatchedBridge.mm in Sources */,
 				2D3B5ED41D9B097D00451313 /* RCTModalHostView.m in Sources */,
 				2D3B5E9F1D9B08AF00451313 /* RCTKeyCommands.m in Sources */,
 				2D3B5EA51D9B08C700451313 /* RCTRootView.m in Sources */,
@@ -2650,7 +2650,7 @@
 				13B07FF21A69327A00A75B9A /* RCTTiming.m in Sources */,
 				1372B70A1AB030C200659ED6 /* RCTAppState.m in Sources */,
 				134FCB3D1A6E7F0800051CC8 /* RCTJSCExecutor.mm in Sources */,
-				14C2CA781B3ACB0400E6CBB2 /* RCTBatchedBridge.m in Sources */,
+				14C2CA781B3ACB0400E6CBB2 /* RCTBatchedBridge.mm in Sources */,
 				B50558401E43DFB900F71A00 /* RCTDevSettings.mm in Sources */,
 				13E067591A70F44B002CDEE1 /* UIView+React.m in Sources */,
 				B505583E1E43DFB900F71A00 /* RCTDevMenu.m in Sources */,