diff --git a/React/Modules/RCTDeviceInfo.m b/React/Modules/RCTDeviceInfo.m
index 6b82a933d..1baab7551 100644
--- a/React/Modules/RCTDeviceInfo.m
+++ b/React/Modules/RCTDeviceInfo.m
@@ -86,6 +86,11 @@ static NSDictionary *RCTExportedDimensions(RCTBridge *bridge)
            };
 }
 
+- (void)dealloc
+{
+  [NSNotificationCenter.defaultCenter removeObserver:self];
+}
+
 - (void)invalidate
 {
   RCTExecuteOnMainQueue(^{
diff --git a/React/Modules/RCTUIManager.m b/React/Modules/RCTUIManager.m
index d4aac0032..5984c972e 100644
--- a/React/Modules/RCTUIManager.m
+++ b/React/Modules/RCTUIManager.m
@@ -79,6 +79,11 @@ RCT_EXPORT_MODULE()
   return NO;
 }
 
+- (void)dealloc
+{
+  [NSNotificationCenter.defaultCenter removeObserver:self];
+}
+
 - (void)invalidate
 {
   /**