diff --git a/Parse/Parse/Internal/Commands/CommandRunner/URLRequestConstructor/PFCommandURLRequestConstructor.m b/Parse/Parse/Internal/Commands/CommandRunner/URLRequestConstructor/PFCommandURLRequestConstructor.m
index c95fd65da..157db303e 100644
--- a/Parse/Parse/Internal/Commands/CommandRunner/URLRequestConstructor/PFCommandURLRequestConstructor.m
+++ b/Parse/Parse/Internal/Commands/CommandRunner/URLRequestConstructor/PFCommandURLRequestConstructor.m
@@ -51,6 +51,12 @@ + (instancetype)constructorWithDataSource:(id<PFInstallationIdentifierStoreProvi
                                                         path:command.httpPath
                                                        query:nil];
         NSDictionary *headers = task.result;
+        NSURLSessionConfiguration *configuration = Parse._currentManager.configuration.URLSessionConfiguration;
+        if (configuration && [configuration.HTTPAdditionalHeaders count]) {
+            NSMutableDictionary *sessionConfigurationHeaders = [configuration.HTTPAdditionalHeaders mutableCopy];
+            [sessionConfigurationHeaders addEntriesFromDictionary:headers];
+            headers = sessionConfigurationHeaders;
+        }
 
         NSString *requestMethod = command.httpMethod;
         NSDictionary *requestParameters = nil;
diff --git a/Parse/Parse/Internal/Commands/CommandRunner/URLSession/PFURLSessionCommandRunner.m b/Parse/Parse/Internal/Commands/CommandRunner/URLSession/PFURLSessionCommandRunner.m
index 2c8627e8b..9e33dce3f 100644
--- a/Parse/Parse/Internal/Commands/CommandRunner/URLSession/PFURLSessionCommandRunner.m
+++ b/Parse/Parse/Internal/Commands/CommandRunner/URLSession/PFURLSessionCommandRunner.m
@@ -29,6 +29,7 @@
 #import "PFRESTCommand.h"
 #import "PFURLConstructor.h"
 #import "PFURLSession.h"
+#import "Parse_Private.h"
 
 @interface PFURLSessionCommandRunner () <PFURLSessionDelegate>
 
@@ -261,7 +262,7 @@ - (BFTask *)_performCommandRunningBlock:(nonnull id (^)(void))block
 
 + (NSURLSessionConfiguration *)_urlSessionConfigurationForApplicationId:(NSString *)applicationId
                                                               clientKey:(nullable NSString *)clientKey {
-    NSURLSessionConfiguration *configuration = [NSURLSessionConfiguration defaultSessionConfiguration];
+    NSURLSessionConfiguration *configuration = Parse._currentManager.configuration.URLSessionConfiguration;
 
     // No cookies, they are bad for you.
     configuration.HTTPCookieAcceptPolicy = NSHTTPCookieAcceptPolicyNever;
@@ -276,6 +277,12 @@ + (NSURLSessionConfiguration *)_urlSessionConfigurationForApplicationId:(NSStrin
     NSDictionary *headers = [PFCommandURLRequestConstructor defaultURLRequestHeadersForApplicationId:applicationId
                                                                                            clientKey:clientKey
                                                                                               bundle:bundle];
+    if (configuration && [configuration.HTTPAdditionalHeaders count]) {
+        NSMutableDictionary *sessionConfigurationHeaders = [configuration.HTTPAdditionalHeaders mutableCopy];
+        [sessionConfigurationHeaders addEntriesFromDictionary:headers];
+        headers = sessionConfigurationHeaders;
+    }
+
     configuration.HTTPAdditionalHeaders = headers;
 
     return configuration;
diff --git a/Parse/Parse/Internal/ParseClientConfiguration_Private.h b/Parse/Parse/Internal/ParseClientConfiguration_Private.h
index 4af07fe86..08e80aca8 100644
--- a/Parse/Parse/Internal/ParseClientConfiguration_Private.h
+++ b/Parse/Parse/Internal/ParseClientConfiguration_Private.h
@@ -25,6 +25,7 @@ extern NSString *const _ParseDefaultServerURLString;
 
 @property (nullable, nonatomic, copy, readwrite) NSString *applicationGroupIdentifier;
 @property (nullable, nonatomic, copy, readwrite) NSString *containingApplicationBundleIdentifier;
+@property (nonatomic, strong, readwrite) NSURLSessionConfiguration *URLSessionConfiguration;
 
 @property (nonatomic, assign, readwrite) NSUInteger networkRetryAttempts;
 
diff --git a/Parse/Parse/ParseClientConfiguration.h b/Parse/Parse/ParseClientConfiguration.h
index 9795976b2..7e2c27e11 100644
--- a/Parse/Parse/ParseClientConfiguration.h
+++ b/Parse/Parse/ParseClientConfiguration.h
@@ -87,9 +87,14 @@ NS_ASSUME_NONNULL_BEGIN
 @property (nullable, nonatomic, copy) NSString *containingApplicationBundleIdentifier PF_TV_UNAVAILABLE PF_WATCH_UNAVAILABLE;
 
 ///--------------------------------------
-#pragma mark - Other Properties
+#pragma mark - Network Properties
 ///--------------------------------------
 
+/**
+ A custom NSURLSessionConfiguration configuration that will be used from the SDK.
+ */
+@property (nonatomic, strong) NSURLSessionConfiguration *URLSessionConfiguration;
+
 /**
  The maximum number of retry attempts to make upon a failed network request.
  */
@@ -163,9 +168,16 @@ NS_ASSUME_NONNULL_BEGIN
 @property (nullable, nonatomic, copy, readonly) NSString *containingApplicationBundleIdentifier;
 
 ///--------------------------------------
-#pragma mark - Other Properties
+#pragma mark - Network Properties
 ///--------------------------------------
 
+/**
+ The NSURLSessionConfiguration configuration used by the SDK.
+
+ The default value is NSURLSessionConfiguration.defaultSessionConfiguration
+ */
+@property (nonatomic, strong, readonly) NSURLSessionConfiguration *URLSessionConfiguration;
+
 /**
  The maximum number of retry attempts to make upon a failed network request.
  */
diff --git a/Parse/Parse/ParseClientConfiguration.m b/Parse/Parse/ParseClientConfiguration.m
index c2be76c78..1bd9040fa 100644
--- a/Parse/Parse/ParseClientConfiguration.m
+++ b/Parse/Parse/ParseClientConfiguration.m
@@ -34,6 +34,7 @@ - (instancetype)initEmpty {
     if (!self) return nil;
 
     _networkRetryAttempts = PFCommandRunningDefaultMaxAttemptsCount;
+    _URLSessionConfiguration = [NSURLSessionConfiguration defaultSessionConfiguration];
     _server = [_ParseDefaultServerURLString copy];
 
     return self;
@@ -116,6 +117,7 @@ - (BOOL)isEqual:(id)object {
             self.localDatastoreEnabled == other.localDatastoreEnabled &&
             [PFObjectUtilities isObject:self.applicationGroupIdentifier equalToObject:other.applicationGroupIdentifier] &&
             [PFObjectUtilities isObject:self.containingApplicationBundleIdentifier equalToObject:other.containingApplicationBundleIdentifier] &&
+            [PFObjectUtilities isObject:self.URLSessionConfiguration equalToObject:other.URLSessionConfiguration] &&
             self.networkRetryAttempts == other.networkRetryAttempts);
 }
 
@@ -134,6 +136,7 @@ - (instancetype)copyWithZone:(NSZone *)zone {
         configuration->_applicationGroupIdentifier = [self->_applicationGroupIdentifier copy];
         configuration->_containingApplicationBundleIdentifier = [self->_containingApplicationBundleIdentifier copy];
         configuration->_networkRetryAttempts = self->_networkRetryAttempts;
+        configuration->_URLSessionConfiguration = self->_URLSessionConfiguration;
     }];
 }