diff --git a/Source/UnitTests/GTMReadMonitorInputStreamTest.m b/Source/UnitTests/GTMReadMonitorInputStreamTest.m
index 8e12b084..fd7becc6 100644
--- a/Source/UnitTests/GTMReadMonitorInputStreamTest.m
+++ b/Source/UnitTests/GTMReadMonitorInputStreamTest.m
@@ -30,10 +30,14 @@ @implementation GTMReadMonitorInputStreamTest
 
 - (void)setUp {
   _monitoredData = [[NSMutableData alloc] init];
+
+  [super setUp];
 }
 
 - (void)tearDown {
   _monitoredData = nil;
+
+  [super tearDown];
 }
 
 - (void)testGTMReadMonitorInputStream {
diff --git a/Source/UnitTests/GTMSessionFetcherChunkedUploadTest.m b/Source/UnitTests/GTMSessionFetcherChunkedUploadTest.m
index 18d01d29..af5c2b63 100644
--- a/Source/UnitTests/GTMSessionFetcherChunkedUploadTest.m
+++ b/Source/UnitTests/GTMSessionFetcherChunkedUploadTest.m
@@ -33,6 +33,12 @@ - (void)setUp {
   [super setUp];
 }
 
+- (void)tearDown {
+  _service = nil;
+
+  [super tearDown];
+}
+
 #pragma mark - Chunked Upload Fetch Tests
 
 - (void)testChunkedUploadTestBlock {
diff --git a/Source/UnitTests/GTMSessionFetcherFetchingTest.m b/Source/UnitTests/GTMSessionFetcherFetchingTest.m
index 63b00951..18f6cab8 100644
--- a/Source/UnitTests/GTMSessionFetcherFetchingTest.m
+++ b/Source/UnitTests/GTMSessionFetcherFetchingTest.m
@@ -35,10 +35,14 @@ @implementation GTMSessionFetcherBaseTest
 + (void)setUp {
   SubstituteUIApplication *app = [[SubstituteUIApplication alloc] init];
   [GTMSessionFetcher setSubstituteUIApplication:app];
+
+  [super setUp];
 }
 
 + (void)tearDown {
   [GTMSessionFetcher setSubstituteUIApplication:nil];
+
+  [super tearDown];
 }
 
 #endif  // GTM_BACKGROUND_TASK_FETCHING
@@ -59,6 +63,8 @@ - (void)setUp {
   _isServerRunning = (_testServer != nil);
   XCTAssertTrue(_isServerRunning,
                 @">>> http test server failed to launch; skipping fetcher tests\n");
+
+  [super setUp];
 }
 
 - (void)tearDown {
@@ -69,6 +75,8 @@ - (void)tearDown {
   _fetcherService = nil;
 
   [[GTMSessionFetcher staticCookieStorage] removeAllCookies];
+
+  [super tearDown];
 }
 
 #pragma mark -
diff --git a/Source/UnitTests/GTMSessionFetcherServiceTest.m b/Source/UnitTests/GTMSessionFetcherServiceTest.m
index 60e79c6a..511daf0c 100644
--- a/Source/UnitTests/GTMSessionFetcherServiceTest.m
+++ b/Source/UnitTests/GTMSessionFetcherServiceTest.m
@@ -52,11 +52,15 @@ - (void)setUp {
 
   XCTAssertTrue(_isServerRunning,
                 @">>> http test server failed to launch; skipping service tests\n");
+
+  [super setUp];
 }
 
 - (void)tearDown {
   _testServer = nil;
   _isServerRunning = NO;
+
+  [super tearDown];
 }
 
 - (void)testFetcherService {