diff --git a/Cartfile b/Cartfile
index 5fee8c3e6..b23df3b6e 100644
--- a/Cartfile
+++ b/Cartfile
@@ -1,3 +1,3 @@
 github "Alamofire/Alamofire" ~> 3.0
 github "ReactiveCocoa/ReactiveCocoa" "v4.0.0-alpha.4"
-github "ReactiveX/RxSwift" "2.0.0-beta.2"
+github "ReactiveX/RxSwift" "2.0.0-beta.4"
diff --git a/Cartfile.resolved b/Cartfile.resolved
index 724981150..860d71269 100644
--- a/Cartfile.resolved
+++ b/Cartfile.resolved
@@ -1,4 +1,4 @@
 github "Alamofire/Alamofire" "3.1.3"
 github "antitypical/Result" "1.0.0"
-github "ReactiveX/RxSwift" "2.0.0-beta.2"
+github "ReactiveX/RxSwift" "2.0.0-beta.4"
 github "ReactiveCocoa/ReactiveCocoa" "v4.0.0-alpha.4"
diff --git a/Carthage/Checkouts/RxSwift b/Carthage/Checkouts/RxSwift
index e39f5dbce..aeff907a8 160000
--- a/Carthage/Checkouts/RxSwift
+++ b/Carthage/Checkouts/RxSwift
@@ -1 +1 @@
-Subproject commit e39f5dbce18632bbcbfb11437fdb3b572e376f97
+Subproject commit aeff907a8d187d001071d5e990686911e715c5bf