diff --git a/Signal.xcodeproj/project.pbxproj b/Signal.xcodeproj/project.pbxproj
index 1fc73ad66..08027526a 100644
--- a/Signal.xcodeproj/project.pbxproj
+++ b/Signal.xcodeproj/project.pbxproj
@@ -377,6 +377,7 @@
 		A1C32D5017A06538000A904E /* AddressBookUI.framework in Frameworks */ = {isa = PBXBuildFile; fileRef = A1C32D4F17A06537000A904E /* AddressBookUI.framework */; };
 		A1C32D5117A06544000A904E /* AddressBook.framework in Frameworks */ = {isa = PBXBuildFile; fileRef = A1C32D4D17A0652C000A904E /* AddressBook.framework */; };
 		AA0C8E498E2046B0B81EEE6E /* libPods.a in Frameworks */ = {isa = PBXBuildFile; fileRef = 8313AE91B4954215858A5662 /* libPods.a */; };
+		B60C16651988999D00E97A6C /* VersionMigrations.m in Sources */ = {isa = PBXBuildFile; fileRef = B60C16641988999D00E97A6C /* VersionMigrations.m */; };
 		B67EBF5D19194AC60084CCFD /* Settings.bundle in Resources */ = {isa = PBXBuildFile; fileRef = B67EBF5C19194AC60084CCFD /* Settings.bundle */; };
 		B69CD25119773E79005CE69A /* XCTest.framework in Frameworks */ = {isa = PBXBuildFile; fileRef = B69CD25019773E79005CE69A /* XCTest.framework */; };
 		B6B1013C196D213F007E3930 /* SGNKeychainUtil.m in Sources */ = {isa = PBXBuildFile; fileRef = B6B1013B196D213F007E3930 /* SGNKeychainUtil.m */; };
@@ -1068,6 +1069,8 @@
 		A1C32D4D17A0652C000A904E /* AddressBook.framework */ = {isa = PBXFileReference; lastKnownFileType = wrapper.framework; name = AddressBook.framework; path = System/Library/Frameworks/AddressBook.framework; sourceTree = SDKROOT; };
 		A1C32D4F17A06537000A904E /* AddressBookUI.framework */ = {isa = PBXFileReference; lastKnownFileType = wrapper.framework; name = AddressBookUI.framework; path = System/Library/Frameworks/AddressBookUI.framework; sourceTree = SDKROOT; };
 		A1FDCBEE16DAA6C300868894 /* AVFoundation.framework */ = {isa = PBXFileReference; lastKnownFileType = wrapper.framework; name = AVFoundation.framework; path = System/Library/Frameworks/AVFoundation.framework; sourceTree = SDKROOT; };
+		B60C16631988999D00E97A6C /* VersionMigrations.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = VersionMigrations.h; sourceTree = "<group>"; };
+		B60C16641988999D00E97A6C /* VersionMigrations.m */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.objc; path = VersionMigrations.m; sourceTree = "<group>"; };
 		B657DDC91911A40500F45B0C /* Signal.entitlements */ = {isa = PBXFileReference; lastKnownFileType = text.xml; path = Signal.entitlements; sourceTree = "<group>"; };
 		B67EBF5C19194AC60084CCFD /* Settings.bundle */ = {isa = PBXFileReference; lastKnownFileType = "wrapper.plug-in"; name = Settings.bundle; path = SettingsBundle/Settings.bundle; sourceTree = SOURCE_ROOT; };
 		B69CD25019773E79005CE69A /* XCTest.framework */ = {isa = PBXFileReference; lastKnownFileType = wrapper.framework; name = XCTest.framework; path = Library/Frameworks/XCTest.framework; sourceTree = DEVELOPER_DIR; };
@@ -1652,6 +1655,8 @@
 				76EB041B18170B33006006FC /* Release.m */,
 				B6B1013A196D213F007E3930 /* SGNKeychainUtil.h */,
 				B6B1013B196D213F007E3930 /* SGNKeychainUtil.m */,
+				B60C16631988999D00E97A6C /* VersionMigrations.h */,
+				B60C16641988999D00E97A6C /* VersionMigrations.m */,
 			);
 			path = environment;
 			sourceTree = "<group>";
@@ -2973,6 +2978,7 @@
 				76EB066218170B34006006FC /* SettingsViewController.m in Sources */,
 				76EB054818170B33006006FC /* CancelTokenSource.m in Sources */,
 				76EB05AC18170B33006006FC /* SrtpSocket.m in Sources */,
+				B60C16651988999D00E97A6C /* VersionMigrations.m in Sources */,
 				76EB062A18170B33006006FC /* BadState.m in Sources */,
 				B97940271832BD2400BD66CB /* UIUtil.m in Sources */,
 				76EB05BE18170B33006006FC /* ConfirmPacket.m in Sources */,
@@ -3467,7 +3473,7 @@
 			isa = XCBuildConfiguration;
 			baseConfigurationReference = C71793B33D9C45079F74487E /* Pods.xcconfig */;
 			buildSettings = {
-				CODE_SIGN_IDENTITY = "";
+				CODE_SIGN_IDENTITY = "iPhone Developer";
 				"CODE_SIGN_IDENTITY[sdk=iphoneos*]" = "iPhone Developer";
 				CURRENT_PROJECT_VERSION = 1;
 				FRAMEWORK_SEARCH_PATHS = (
@@ -3507,7 +3513,7 @@
 				LLVM_LTO = NO;
 				OTHER_LDFLAGS = "$(inherited)";
 				PRODUCT_NAME = Signal;
-				PROVISIONING_PROFILE = "B26CF658-AD7F-4F4C-B94F-74884941DF87";
+				PROVISIONING_PROFILE = "";
 				SDKROOT = iphoneos;
 				TARGETED_DEVICE_FAMILY = 1;
 				TEST_AFTER_BUILD = YES;
@@ -3704,7 +3710,7 @@
 			isa = XCBuildConfiguration;
 			baseConfigurationReference = C71793B33D9C45079F74487E /* Pods.xcconfig */;
 			buildSettings = {
-				CODE_SIGN_IDENTITY = "";
+				CODE_SIGN_IDENTITY = "iPhone Developer";
 				"CODE_SIGN_IDENTITY[sdk=iphoneos*]" = "iPhone Developer";
 				CURRENT_PROJECT_VERSION = 1;
 				FRAMEWORK_SEARCH_PATHS = (
@@ -3756,7 +3762,7 @@
 			isa = XCBuildConfiguration;
 			baseConfigurationReference = C71793B33D9C45079F74487E /* Pods.xcconfig */;
 			buildSettings = {
-				CODE_SIGN_IDENTITY = "";
+				CODE_SIGN_IDENTITY = "iPhone Developer";
 				"CODE_SIGN_IDENTITY[sdk=iphoneos*]" = "iPhone Developer";
 				CURRENT_PROJECT_VERSION = 1;
 				FRAMEWORK_SEARCH_PATHS = (
@@ -3791,7 +3797,7 @@
 				LLVM_LTO = NO;
 				OTHER_LDFLAGS = "$(inherited)";
 				PRODUCT_NAME = Signal;
-				PROVISIONING_PROFILE = "7214A823-1F7A-4460-82D8-D89CA511CEA6";
+				PROVISIONING_PROFILE = "";
 				SDKROOT = iphoneos;
 				TARGETED_DEVICE_FAMILY = 1;
 				TEST_AFTER_BUILD = YES;
diff --git a/Signal/src/AppDelegate.m b/Signal/src/AppDelegate.m
index 0ad5e7b8f..403eddc16 100644
--- a/Signal/src/AppDelegate.m
+++ b/Signal/src/AppDelegate.m
@@ -16,6 +16,7 @@
 #import "Util.h"
 #import <UICKeyChainStore/UICKeyChainStore.h>
 #import "Environment.h"
+#import "VersionMigrations.h"
 
 #define kSignalVersionKey @"SignalUpdateVersionKey"