diff --git a/Swiftz.xcodeproj/project.pbxproj b/Swiftz.xcodeproj/project.pbxproj
index 1c18121..448fced 100644
--- a/Swiftz.xcodeproj/project.pbxproj
+++ b/Swiftz.xcodeproj/project.pbxproj
@@ -1380,7 +1380,7 @@
 				SKIP_INSTALL = YES;
 				SWIFT_VERSION = 3.0;
 				TARGETED_DEVICE_FAMILY = 3;
-				TVOS_DEPLOYMENT_TARGET = 9.1;
+				TVOS_DEPLOYMENT_TARGET = 9.0;
 			};
 			name = Debug;
 		};
@@ -1403,7 +1403,7 @@
 				SKIP_INSTALL = YES;
 				SWIFT_VERSION = 3.0;
 				TARGETED_DEVICE_FAMILY = 3;
-				TVOS_DEPLOYMENT_TARGET = 9.1;
+				TVOS_DEPLOYMENT_TARGET = 9.0;
 				VALIDATE_PRODUCT = YES;
 			};
 			name = Release;
@@ -1422,7 +1422,7 @@
 				SDKROOT = appletvos;
 				SWIFT_OPTIMIZATION_LEVEL = "-Onone";
 				SWIFT_VERSION = 3.0;
-				TVOS_DEPLOYMENT_TARGET = 9.1;
+				TVOS_DEPLOYMENT_TARGET = 9.0;
 			};
 			name = Debug;
 		};
@@ -1438,7 +1438,7 @@
 				PRODUCT_NAME = "$(TARGET_NAME)";
 				SDKROOT = appletvos;
 				SWIFT_VERSION = 3.0;
-				TVOS_DEPLOYMENT_TARGET = 9.1;
+				TVOS_DEPLOYMENT_TARGET = 9.0;
 				VALIDATE_PRODUCT = YES;
 			};
 			name = Release;
@@ -1464,7 +1464,7 @@
 				SKIP_INSTALL = YES;
 				SWIFT_VERSION = 3.0;
 				TARGETED_DEVICE_FAMILY = 4;
-				WATCHOS_DEPLOYMENT_TARGET = 2.1;
+				WATCHOS_DEPLOYMENT_TARGET = 2.0;
 			};
 			name = Debug;
 		};
@@ -1489,7 +1489,7 @@
 				SWIFT_VERSION = 3.0;
 				TARGETED_DEVICE_FAMILY = 4;
 				VALIDATE_PRODUCT = YES;
-				WATCHOS_DEPLOYMENT_TARGET = 2.1;
+				WATCHOS_DEPLOYMENT_TARGET = 2.0;
 			};
 			name = Release;
 		};
@@ -1749,7 +1749,7 @@
 					"$(inherited)",
 				);
 				INFOPLIST_FILE = Tests/Info.plist;
-				IPHONEOS_DEPLOYMENT_TARGET = 8.3;
+				IPHONEOS_DEPLOYMENT_TARGET = 8.0;
 				LD_RUNPATH_SEARCH_PATHS = "$(inherited) @executable_path/Frameworks @loader_path/Frameworks";
 				PRODUCT_BUNDLE_IDENTIFIER = "io.maxs.${PRODUCT_NAME:rfc1034identifier}";
 				PRODUCT_NAME = "$(TARGET_NAME)";
@@ -1771,7 +1771,7 @@
 				);
 				GCC_NO_COMMON_BLOCKS = YES;
 				INFOPLIST_FILE = Tests/Info.plist;
-				IPHONEOS_DEPLOYMENT_TARGET = 8.3;
+				IPHONEOS_DEPLOYMENT_TARGET = 8.0;
 				LD_RUNPATH_SEARCH_PATHS = "$(inherited) @executable_path/Frameworks @loader_path/Frameworks";
 				PRODUCT_BUNDLE_IDENTIFIER = "io.maxs.${PRODUCT_NAME:rfc1034identifier}";
 				PRODUCT_NAME = "$(TARGET_NAME)";