diff --git a/.appveyor.yml b/.appveyor.yml
index 00e46bef..e25d3e74 100644
--- a/.appveyor.yml
+++ b/.appveyor.yml
@@ -19,21 +19,21 @@ environment:
 
 ### MSVC Toolchains ###
   # Nightly 64-bit MSVC
-    - channel: stable
+    - channel: nightly
       target: x86_64-pc-windows-msvc
       MSYS_BITS: 64
   # Nightly 32-bit MSVC
-    - channel: stable
+    - channel: nightly
       target: i686-pc-windows-msvc
       MSYS_BITS: 32
 
 ### GNU Toolchains ###
   # Nightly 64-bit GNU
-    - channel: stable
+    - channel: nightly
       target: x86_64-pc-windows-gnu
       MSYS_BITS: 64
   # Nightly 32-bit GNU
-    - channel: stable
+    - channel: nightly
       target: i686-pc-windows-gnu
       MSYS_BITS: 32
 
diff --git a/.travis.yml b/.travis.yml
index 3073f740..7d9a5e46 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,7 +1,7 @@
 language: rust
 
 rust:
-    - stable
+    - nightly
 
 os:
   - linux
diff --git a/azure-pipelines.yml b/azure-pipelines.yml
index c7511cea..f506d106 100644
--- a/azure-pipelines.yml
+++ b/azure-pipelines.yml
@@ -17,7 +17,7 @@ strategy:
   matrix:
     linux:
       image_name: 'ubuntu-16.04'
-      rustup_toolchain: stable
+      rustup_toolchain: nightly
     mac:
       image_name: 'macos-10.13'
       rustup_toolchain: nightly
diff --git a/rust-toolchain b/rust-toolchain
new file mode 100644
index 00000000..bf867e0a
--- /dev/null
+++ b/rust-toolchain
@@ -0,0 +1 @@
+nightly