diff --git a/cookbook b/cookbook
index 890edba..d9a6f3e 160000
--- a/cookbook
+++ b/cookbook
@@ -1 +1 @@
-Subproject commit 890edbae1e1b0fb9a9cb13e7a59cf198023dd829
+Subproject commit d9a6f3eba7e212aaa2283234ddf4edf918635fce
diff --git a/rust b/rust
index 771873c..4f93357 160000
--- a/rust
+++ b/rust
@@ -1 +1 @@
-Subproject commit 771873c84137842c78cfc39625613b95867d21ef
+Subproject commit 4f93357d3b8938dfe439329c43c1e4f919a70869
diff --git a/rust-toolchain b/rust-toolchain
index 96a93aa..d594577 100644
--- a/rust-toolchain
+++ b/rust-toolchain
@@ -1 +1 @@
-nightly-2018-01-28
+nightly-2018-02-07