diff --git a/Cartfile b/Cartfile
index ffaa9c09ce..8c5d63782f 100644
--- a/Cartfile
+++ b/Cartfile
@@ -4,4 +4,4 @@ github "i-schuetz/SwiftCharts" == 0.6.1
 github "mddub/dexcom-share-client-swift" == 0.4.1
 github "mddub/G4ShareSpy" == 0.3.3
 github "ps2/rileylink_ios" == 2.0.0
-github "amplitude/Amplitude-iOS" ~> 3.8.5
+github "LoopKit/Amplitude-iOS" "decreepify"
diff --git a/Cartfile.resolved b/Cartfile.resolved
index d2ac7370e5..e1eeddc564 100644
--- a/Cartfile.resolved
+++ b/Cartfile.resolved
@@ -1,6 +1,6 @@
+github "LoopKit/Amplitude-iOS" "2137d5fd44bf630ed33e1e72d7af6d8f8612f270"
 github "LoopKit/CGMBLEKit" "v2.0"
 github "LoopKit/LoopKit" "v1.5.5"
-github "amplitude/Amplitude-iOS" "v3.14.1"
 github "i-schuetz/SwiftCharts" "6b55a26a7b0b95e49202ddc1db5404702fce114f"
 github "mddub/G4ShareSpy" "v0.3.3"
 github "mddub/dexcom-share-client-swift" "v0.4.1"
diff --git a/Carthage/Build/.Amplitude-iOS.version b/Carthage/Build/.Amplitude-iOS.version
index 8ebbee94f7..6c790cc4b2 100644
--- a/Carthage/Build/.Amplitude-iOS.version
+++ b/Carthage/Build/.Amplitude-iOS.version
@@ -8,11 +8,11 @@
   "tvOS" : [
 
   ],
-  "commitish" : "v3.14.1",
+  "commitish" : "2137d5fd44bf630ed33e1e72d7af6d8f8612f270",
   "iOS" : [
     {
       "name" : "Amplitude",
-      "hash" : "6d22c00833bfcaa5d34ba1331c1144a93e8999bad97ade70be089aba729a9fbe"
+      "hash" : "5f7cea951cf973d78073e75b87cd222891b181a3879b081a42f057d983b7c389"
     }
   ]
 }
\ No newline at end of file
diff --git a/Carthage/Build/iOS/Amplitude.framework/Amplitude b/Carthage/Build/iOS/Amplitude.framework/Amplitude
index c78691bf75..a761b896f9 100755
Binary files a/Carthage/Build/iOS/Amplitude.framework/Amplitude and b/Carthage/Build/iOS/Amplitude.framework/Amplitude differ
diff --git a/Carthage/Build/iOS/Amplitude.framework/Headers/AMPDeviceInfo.h b/Carthage/Build/iOS/Amplitude.framework/Headers/AMPDeviceInfo.h
index 1e18cd5f93..945c2e5e7e 100644
--- a/Carthage/Build/iOS/Amplitude.framework/Headers/AMPDeviceInfo.h
+++ b/Carthage/Build/iOS/Amplitude.framework/Headers/AMPDeviceInfo.h
@@ -3,7 +3,7 @@
 
 @interface AMPDeviceInfo : NSObject
 
--(id) init;
+-(id) init: (BOOL) disableIdfaTracking;
 @property (readonly) NSString *appVersion;
 @property (readonly) NSString *osName;
 @property (readonly) NSString *osVersion;
diff --git a/Carthage/Build/iOS/Amplitude.framework/Headers/Amplitude.h b/Carthage/Build/iOS/Amplitude.framework/Headers/Amplitude.h
index 729509d045..8dc562b218 100644
--- a/Carthage/Build/iOS/Amplitude.framework/Headers/Amplitude.h
+++ b/Carthage/Build/iOS/Amplitude.framework/Headers/Amplitude.h
@@ -445,6 +445,15 @@
  */
 - (void)setUserId:(NSString*) userId;
 
+/**
+ Sets the userId and starts a new session. The previous session for the previous user will be terminated and a new session will begin for the new user id.
+
+ @param userId                  If your app has its own login system that you want to track users with, you can set the userId.
+
+ @see [Setting Custom UserIds](https://github.com/amplitude/Amplitude-iOS#setting-custom-user-ids)
+ */
+- (void)setUserId:(NSString*) userId startNewSession:(BOOL) startNewSession;
+
 /**
  Sets the deviceId.
 
@@ -509,6 +518,13 @@
  */
 - (void)useAdvertisingIdForDeviceId;
 
+/**
+ Disables tracking of advertisingIdentifier by the SDK
+
+ **NOTE:** Must be called before initializeApiKey: is called to function.
+ */
+- (void)disableIdfaTracking;
+
 /**-----------------------------------------------------------------------------
  * @name Other Methods
  * -----------------------------------------------------------------------------
diff --git a/Carthage/Build/iOS/Amplitude.framework/Info.plist b/Carthage/Build/iOS/Amplitude.framework/Info.plist
index 23b1605dc0..a963fa3eb3 100644
Binary files a/Carthage/Build/iOS/Amplitude.framework/Info.plist and b/Carthage/Build/iOS/Amplitude.framework/Info.plist differ