diff --git a/.travis.yml b/.travis.yml
index 10018e1..6feaf39 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,7 +1,7 @@
 sudo: false
 language: rust
 rust:
-- nightly-2017-09-05
+- nightly-2017-09-26
 env:
   global:
     - TRAVIS_CARGO_NIGHTLY_FEATURE=""
@@ -23,6 +23,6 @@ script:
 - |
   travis-cargo build -- "${CARGO_FLAGS}" &&
   travis-cargo test -- "${CARGO_FLAGS}" &&
-  travis-cargo --only nightly-2017-09-05 doc -- --no-deps "${CARGO_FLAGS}"
+  travis-cargo --only nightly-2017-09-26 doc -- --no-deps "${CARGO_FLAGS}"
 after_success:
-- test $CARGO_FLAGS = "--all-features" && travis-cargo --only nightly-2017-09-05 doc-upload
+- test $CARGO_FLAGS = "--all-features" && travis-cargo --only nightly-2017-09-26 doc-upload
diff --git a/README.md b/README.md
index 25a7467..cbf795c 100644
--- a/README.md
+++ b/README.md
@@ -21,7 +21,7 @@ Rocket requires nightly Rust. You should probably install Rust with
 See
 [installation instructions](https://rocket.rs/guide/getting-started/#installing-rust).
 
-In particular, `rocket_cors` is currently targetted for `nightly-2017-07-21`. Newer nightlies
+In particular, `rocket_cors` is currently targetted for `nightly-2017-09-26`. Newer nightlies
 might work, but it's not guaranteed.
 
 ## Installation
diff --git a/rust-toolchain b/rust-toolchain
index 2a4213e..88b515d 100644
--- a/rust-toolchain
+++ b/rust-toolchain
@@ -1 +1 @@
-nightly-2017-09-05
+nightly-2017-09-26