diff --git a/CHANGELOG.md b/CHANGELOG.md
index 5490ed61..9486e4fd 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -3,6 +3,7 @@
 - [new] Add PINRemoteImageManagerConfiguration configuration object. [#492](https://github.com/pinterest/PINRemoteImage/pull/492) [rqueue](https://github.com/rqueue)
 - [fixed] Fixes blending in animated WebP images. [#507](https://github.com/pinterest/PINRemoteImage/pull/507) [garrettmoon](https://github.com/garrettmoon)
 - [fixed] Fixes support in PINAnimatedImageView for WebP animated images. [#507](https://github.com/pinterest/PINRemoteImage/pull/507) [garrettmoon](https://github.com/garrettmoon)
+- [new] Exposure didCompleteTask:withError: delegate method of protocol PINURLSessionManagerDelegate. [#519](https://github.com/pinterest/PINRemoteImage/pull/519) [zhongwuzw](https://github.com/zhongwuzw)
 - [fixed] Fixes AnimatedImageView designated initializer not work. [#512](https://github.com/pinterest/PINRemoteImage/pull/512) [zhongwuzw](https://github.com/zhongwuzw)
 - [fixed] Set bpp(bits per pixel) to 32 bit for GIF. [#511](https://github.com/pinterest/PINRemoteImage/pull/511) [zhongwuzw](https://github.com/zhongwuzw)
 - [new] Add cancel method for PINRemoteImageManager. [#509](https://github.com/pinterest/PINRemoteImage/pull/509) [zhongwuzw](https://github.com/zhongwuzw)
diff --git a/Source/Classes/PINURLSessionManager.h b/Source/Classes/PINURLSessionManager.h
index 3b170176..5b25ff17 100644
--- a/Source/Classes/PINURLSessionManager.h
+++ b/Source/Classes/PINURLSessionManager.h
@@ -21,7 +21,7 @@ extern NSErrorDomain _Nonnull const PINURLErrorDomain;
 - (void)didCollectMetrics:(nonnull NSURLSessionTaskMetrics *)metrics forURL:(nonnull NSURL *)url API_AVAILABLE(macosx(10.12), ios(10.0), watchos(3.0), tvos(10.0));
 - (void)didReceiveResponse:(nonnull NSURLResponse *)response forTask:(nonnull NSURLSessionTask *)task;
 - (void)didReceiveAuthenticationChallenge:(nonnull NSURLAuthenticationChallenge *)challenge forTask:(nullable NSURLSessionTask *)task completionHandler:(nonnull void (^)(NSURLSessionAuthChallengeDisposition disposition, NSURLCredential  * _Nullable credential))completionHandler;
-
+- (void)didCompleteTask:(nonnull NSURLSessionTask *)task withError:(nullable NSError *)error;
 
 @end
 
diff --git a/Source/Classes/PINURLSessionManager.m b/Source/Classes/PINURLSessionManager.m
index 2059b3b4..e83601cb 100644
--- a/Source/Classes/PINURLSessionManager.m
+++ b/Source/Classes/PINURLSessionManager.m
@@ -201,6 +201,10 @@ - (void)URLSession:(NSURLSession *)session task:(NSURLSessionTask *)task didComp
         if (completionHandler) {
             completionHandler(task, error);
         }
+        
+        if ([strongSelf.delegate respondsToSelector:@selector(didCompleteTask:withError:)]) {
+            [strongSelf.delegate didCompleteTask:task withError:error];
+        }
     });
 }
 
diff --git a/Tests/PINRemoteImageTests.m b/Tests/PINRemoteImageTests.m
index 6bf03d98..00be9876 100644
--- a/Tests/PINRemoteImageTests.m
+++ b/Tests/PINRemoteImageTests.m
@@ -89,6 +89,7 @@ @interface PINRemoteImage_Tests : XCTestCase <PINURLSessionManagerDelegate>
 @property (nonatomic, strong) NSMutableData *data;
 @property (nonatomic, strong) NSURLSessionTask *task;
 @property (nonatomic, strong) NSError *error;
+@property (nonatomic, strong) dispatch_semaphore_t sessionDidCompleteDelegateSemaphore;
 
 @end
 
@@ -222,6 +223,10 @@ - (void)didCompleteTask:(NSURLSessionTask *)task withError:(NSError *)error
 {
     self.task = task;
     self.error = error;
+    // Used for URLSessionDidCompleteDelegate test
+    if (self.sessionDidCompleteDelegateSemaphore) {
+        dispatch_semaphore_signal(self.sessionDidCompleteDelegateSemaphore);
+    }
 }
 
 - (void)setUp
@@ -239,6 +244,9 @@ - (void)tearDown
     self.imageManager = nil;
     [[PINSpeedRecorder sharedRecorder] setCurrentBytesPerSecond:-1];
     [[PINSpeedRecorder sharedRecorder] resetMeasurements];
+    if (self.sessionDidCompleteDelegateSemaphore) {
+        self.sessionDidCompleteDelegateSemaphore = nil;
+    }
     [super tearDown];
 }
 
@@ -1410,6 +1418,16 @@ - (void)testRetry
   method_exchangeImplementations(originalMethod, swizzledMethod);
 }
 
+- (void)testURLSessionDidCompleteDelegate
+{
+    self.imageManager = [[PINRemoteImageManager alloc] init];
+    self.imageManager.sessionManager.delegate = self;
+    self.sessionDidCompleteDelegateSemaphore = dispatch_semaphore_create(0);
+    [self.imageManager downloadImageWithURL:[self transparentPNGURL] completion:nil];
+    long result = dispatch_semaphore_wait(self.sessionDidCompleteDelegateSemaphore, [self timeout]);
+    XCTAssert(result == 0);
+}
+
 - (void)testCancelAllTasks
 {
     XCTestExpectation *expectation = [self expectationWithDescription:@"Cancel all tasks"];