diff --git a/Transmission.xcodeproj/project.pbxproj b/Transmission.xcodeproj/project.pbxproj
index 8111475a6..3ddcfd07c 100644
--- a/Transmission.xcodeproj/project.pbxproj
+++ b/Transmission.xcodeproj/project.pbxproj
@@ -2214,7 +2214,7 @@
 				INFOPLIST_OTHER_PREPROCESSOR_FLAGS = "-CC";
 				INFOPLIST_PREFIX_HEADER = "$(SRCROOT)/libtransmission/version.h";
 				INFOPLIST_PREPROCESS = YES;
-				MACOSX_DEPLOYMENT_TARGET = 10.4;
+				MACOSX_DEPLOYMENT_TARGET = 10.5;
 				OTHER_CFLAGS = "$(inherited)";
 				OTHER_LDFLAGS = "";
 				PREBINDING = NO;
@@ -2350,7 +2350,7 @@
 				INFOPLIST_OTHER_PREPROCESSOR_FLAGS = "-CC";
 				INFOPLIST_PREFIX_HEADER = "$(SRCROOT)/libtransmission/version.h";
 				INFOPLIST_PREPROCESS = YES;
-				MACOSX_DEPLOYMENT_TARGET = 10.4;
+				MACOSX_DEPLOYMENT_TARGET = 10.5;
 				OTHER_LDFLAGS = "";
 				PREBINDING = NO;
 				SDKROOT = macosx10.5;
@@ -2386,7 +2386,7 @@
 				INFOPLIST_OTHER_PREPROCESSOR_FLAGS = "-CC";
 				INFOPLIST_PREFIX_HEADER = "$(SRCROOT)/libtransmission/version.h";
 				INFOPLIST_PREPROCESS = YES;
-				MACOSX_DEPLOYMENT_TARGET = 10.4;
+				MACOSX_DEPLOYMENT_TARGET = 10.5;
 				OTHER_LDFLAGS = "";
 				PREBINDING = NO;
 				SDKROOT = macosx10.5;