diff --git a/circle.yml b/circle.yml
index c9e170b4d..f194f91fb 100644
--- a/circle.yml
+++ b/circle.yml
@@ -42,9 +42,9 @@ jobs:
           command: |
             curl -L https://github.com/mozilla/grcov/releases/latest/download/grcov-linux-x86_64.tar.bz2 | tar jxf -
       - run:
-          name: Pull Rust Nightly
+          name: Pull Rust Stable
           command: |
-            docker pull rustlang/rust:nightly-stretch
+            docker pull rustlang/rust:1.40-stretch
       - run:
           name: Build and Test
           command: |