diff --git a/React/Modules/RCTExceptionsManager.h b/React/Modules/RCTExceptionsManager.h
index 3574bc71b4c3d3..0e4489c57f93ba 100644
--- a/React/Modules/RCTExceptionsManager.h
+++ b/React/Modules/RCTExceptionsManager.h
@@ -9,13 +9,15 @@
 
 #import <React/RCTBridgeModule.h>
 
+NS_ASSUME_NONNULL_BEGIN
+
 @protocol RCTExceptionsManagerDelegate <NSObject>
 
-- (void)handleSoftJSExceptionWithMessage:(NSString *)message stack:(NSArray *)stack exceptionId:(NSNumber *)exceptionId;
-- (void)handleFatalJSExceptionWithMessage:(NSString *)message stack:(NSArray *)stack exceptionId:(NSNumber *)exceptionId;
+- (void)handleSoftJSExceptionWithMessage:(nullable NSString *)message stack:(nullable NSArray *)stack exceptionId:(NSNumber *)exceptionId;
+- (void)handleFatalJSExceptionWithMessage:(nullable NSString *)message stack:(nullable NSArray *)stack exceptionId:(NSNumber *)exceptionId;
 
 @optional
-- (void)updateJSExceptionWithMessage:(NSString *)message stack:(NSArray *)stack exceptionId:(NSNumber *)exceptionId;
+- (void)updateJSExceptionWithMessage:(nullable NSString *)message stack:(nullable NSArray *)stack exceptionId:(NSNumber *)exceptionId;
 
 @end
 
@@ -23,11 +25,13 @@
 
 - (instancetype)initWithDelegate:(id<RCTExceptionsManagerDelegate>)delegate;
 
-- (void)reportSoftException:(NSString *)message stack:(NSArray<NSDictionary *> *)stack exceptionId:(nonnull NSNumber *)exceptionId;
-- (void)reportFatalException:(NSString *)message stack:(NSArray<NSDictionary *> *)stack exceptionId:(nonnull NSNumber *)exceptionId;
+- (void)reportSoftException:(nullable NSString *)message stack:(nullable NSArray<NSDictionary *> *)stack exceptionId:(NSNumber *)exceptionId;
+- (void)reportFatalException:(nullable NSString *)message stack:(nullable NSArray<NSDictionary *> *)stack exceptionId:(NSNumber *)exceptionId;
 
 @property (nonatomic, weak) id<RCTExceptionsManagerDelegate> delegate;
 
 @property (nonatomic, assign) NSUInteger maxReloadAttempts;
 
 @end
+
+NS_ASSUME_NONNULL_END