diff --git a/rust-toolchain b/rust-toolchain
index 7abca8ef469414e688981481f516b10c613660d1..1b564641e87864de685fe8a007a6d198d2dc9ee1 100644
--- a/rust-toolchain
+++ b/rust-toolchain
@@ -1 +1 @@
-nightly-2019-03-11
+nightly-2019-04-06