diff --git a/cookbook b/cookbook
index ed90861..cc22c48 160000
--- a/cookbook
+++ b/cookbook
@@ -1 +1 @@
-Subproject commit ed90861d8dc63c8634f999ad24c93685ce14f5ae
+Subproject commit cc22c487ecd3a8bc8ff13c12c989d5a3101af32c
diff --git a/rust b/rust
index e497a6e..9457dcc 160000
--- a/rust
+++ b/rust
@@ -1 +1 @@
-Subproject commit e497a6ee93a23a0da4be75e65163df04949eb828
+Subproject commit 9457dccae8cc9576bd9e4795864dd9a6ff602375
diff --git a/rust-toolchain b/rust-toolchain
index d594577..b65dfa7 100644
--- a/rust-toolchain
+++ b/rust-toolchain
@@ -1 +1 @@
-nightly-2018-02-07
+nightly-2018-03-01