diff --git a/Carthage/Checkouts/GCDKit b/Carthage/Checkouts/GCDKit
index 02ba2c3..a88e9b7 160000
--- a/Carthage/Checkouts/GCDKit
+++ b/Carthage/Checkouts/GCDKit
@@ -1 +1 @@
-Subproject commit 02ba2c3496be84d565cf0145e16de5aad55defc2
+Subproject commit a88e9b715be2164fb866cfef28973d6754dae23c
diff --git a/CoreStore.xcodeproj/project.pbxproj b/CoreStore.xcodeproj/project.pbxproj
index 30b4f4e..121863c 100644
--- a/CoreStore.xcodeproj/project.pbxproj
+++ b/CoreStore.xcodeproj/project.pbxproj
@@ -1028,7 +1028,6 @@
 				GCC_WARN_UNINITIALIZED_AUTOS = YES_AGGRESSIVE;
 				GCC_WARN_UNUSED_FUNCTION = YES;
 				GCC_WARN_UNUSED_VARIABLE = YES;
-				IPHONEOS_DEPLOYMENT_TARGET = 8.1;
 				MTL_ENABLE_DEBUG_INFO = YES;
 				ONLY_ACTIVE_ARCH = YES;
 				OTHER_SWIFT_FLAGS = "-D USE_FRAMEWORKS -D DEBUG";
@@ -1070,7 +1069,6 @@
 				GCC_WARN_UNINITIALIZED_AUTOS = YES_AGGRESSIVE;
 				GCC_WARN_UNUSED_FUNCTION = YES;
 				GCC_WARN_UNUSED_VARIABLE = YES;
-				IPHONEOS_DEPLOYMENT_TARGET = 8.1;
 				MTL_ENABLE_DEBUG_INFO = NO;
 				OTHER_SWIFT_FLAGS = "-D USE_FRAMEWORKS";
 				SDKROOT = iphoneos;