diff --git a/Cartfile b/Cartfile
index 5e8c041..0a65307 100644
--- a/Cartfile
+++ b/Cartfile
@@ -1 +1 @@
-github "antitypical/Result" ~> 1.0
+github "antitypical/Result" ~> 1.0.2
diff --git a/Cartfile.private b/Cartfile.private
index eca31f4..e5abed2 100644
--- a/Cartfile.private
+++ b/Cartfile.private
@@ -1,3 +1,3 @@
 github "jspahrsummers/xcconfigs" "ec5753493605deed7358dec5f9260f503d3ed650"
-github "Quick/Quick" ~> 0.7
-github "Quick/Nimble" ~> 2.0
+github "Quick/Quick" ~> 0.9
+github "Quick/Nimble" ~> 3.1
diff --git a/Cartfile.resolved b/Cartfile.resolved
index 6ca951b..3316197 100644
--- a/Cartfile.resolved
+++ b/Cartfile.resolved
@@ -1,4 +1,4 @@
-github "Quick/Nimble" "v2.0.0"
-github "Quick/Quick" "v0.7.0"
-github "antitypical/Result" "1.0.0"
+github "Quick/Nimble" "v3.1.0"
+github "Quick/Quick" "v0.9.0"
+github "antitypical/Result" "1.0.2"
 github "jspahrsummers/xcconfigs" "ec5753493605deed7358dec5f9260f503d3ed650"
diff --git a/Carthage/Checkouts/Nimble b/Carthage/Checkouts/Nimble
index 20a3f3b..72878d6 160000
--- a/Carthage/Checkouts/Nimble
+++ b/Carthage/Checkouts/Nimble
@@ -1 +1 @@
-Subproject commit 20a3f3b4e63cc8d97c92c4164bf36f2a2c9a6e1b
+Subproject commit 72878d6622cf8362d3507cd2e3d341b06580f451
diff --git a/Carthage/Checkouts/Quick b/Carthage/Checkouts/Quick
index 7d0b8c2..fcb11a2 160000
--- a/Carthage/Checkouts/Quick
+++ b/Carthage/Checkouts/Quick
@@ -1 +1 @@
-Subproject commit 7d0b8c21357839a8c5228863b77faecf709254a9
+Subproject commit fcb11a2cbf08e10806039b8f767ab9072115d04d
diff --git a/Carthage/Checkouts/Result b/Carthage/Checkouts/Result
index 3bded1d..382f933 160000
--- a/Carthage/Checkouts/Result
+++ b/Carthage/Checkouts/Result
@@ -1 +1 @@
-Subproject commit 3bded1d88bebba55863dbabd1d9519ff556ea5f5
+Subproject commit 382f9339404d24f632a5f98453c1e08a5ea55904
diff --git a/Commandant/Errors.swift b/Commandant/Errors.swift
index f1303e5..527a567 100644
--- a/Commandant/Errors.swift
+++ b/Commandant/Errors.swift
@@ -33,9 +33,6 @@ extension CommandantError: CustomStringConvertible {
 	}
 }
 
-/// Used to represent that a ClientError will never occur.
-internal enum NoError: ErrorType {}
-
 /// Constructs an `InvalidArgument` error that indicates a missing value for
 /// the argument by the given name.
 internal func missingArgumentError<ClientError>(argumentName: String) -> CommandantError<ClientError> {