diff --git a/ProtocolBuffers.xcodeproj/project.pbxproj b/ProtocolBuffers.xcodeproj/project.pbxproj
index 3100453..2b437b0 100644
--- a/ProtocolBuffers.xcodeproj/project.pbxproj
+++ b/ProtocolBuffers.xcodeproj/project.pbxproj
@@ -584,6 +584,7 @@
 				CLANG_ENABLE_OBJC_ARC = YES;
 				COMBINE_HIDPI_IMAGES = YES;
 				COPY_PHASE_STRIP = NO;
+				CURRENT_PROJECT_VERSION = 1;
 				DEBUG_INFORMATION_FORMAT = dwarf;
 				DYLIB_COMPATIBILITY_VERSION = 1;
 				DYLIB_CURRENT_VERSION = 1;
@@ -609,6 +610,7 @@
 				CLANG_ENABLE_OBJC_ARC = YES;
 				COMBINE_HIDPI_IMAGES = YES;
 				COPY_PHASE_STRIP = YES;
+				CURRENT_PROJECT_VERSION = 1;
 				DEBUG_INFORMATION_FORMAT = "dwarf-with-dsym";
 				DYLIB_COMPATIBILITY_VERSION = 1;
 				DYLIB_CURRENT_VERSION = 1;