diff --git a/ios/RNFetchBlobNetwork.m b/ios/RNFetchBlobNetwork.m
index 7be57fc59..8c75febcf 100644
--- a/ios/RNFetchBlobNetwork.m
+++ b/ios/RNFetchBlobNetwork.m
@@ -241,7 +241,10 @@ - (void) sendRequest:(__weak NSDictionary  * _Nullable )options
     }
 
     __block NSURLSessionDataTask * task = [session dataTaskWithRequest:req];
-    [taskTable setObject:task forKey:taskId];
+    @synchronized(taskTable)
+    {
+        [taskTable setObject:task forKey:taskId];
+    }
     [task resume];
 
     // network status indicator