diff --git a/.travis.yml b/.travis.yml
index 6b26c9a..5d76712 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -20,6 +20,8 @@ matrix:
     # Tests
     - env: TARGET=x86_64-unknown-linux-gnu
       rust: nightly
+    - env: TARGET=x86_64-unknown-linux-gnu
+      rust: nightly-2018-12-01
 
 install:
   - bash ci/install.sh