diff --git a/Cartfile.resolved b/Cartfile.resolved
index 6717f92d6..9aad8b6e3 100644
--- a/Cartfile.resolved
+++ b/Cartfile.resolved
@@ -1 +1 @@
-github "mxcl/PromiseKit" "4.1.7"
+github "mxcl/PromiseKit" "4.1.8"
diff --git a/Carthage b/Carthage
index ffb30d7e6..b2af6a2b0 160000
--- a/Carthage
+++ b/Carthage
@@ -1 +1 @@
-Subproject commit ffb30d7e661a8501b2a0622334ad6b6fe136e00c
+Subproject commit b2af6a2b0e114a00e24ba412ea255f51f4cac9e0
diff --git a/Makefile b/Makefile
index 5bc1f29b8..e863e5306 100644
--- a/Makefile
+++ b/Makefile
@@ -14,6 +14,10 @@ default: test
 
 ci: dependencies test
 
+update_dependencies:
+	pod update
+	carthage update
+
 dependencies:
 	cd $(WORKING_DIR) && \
 		git submodule update --init