diff --git a/.circleci/config.yml b/.circleci/config.yml
index 606382e4..cbd41e71 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -22,7 +22,7 @@ version: 2
 jobs:
   stable:
     docker:
-      - image: rust:1.25.0-slim
+      - image: rust:1.31.0-slim
     environment:
       RUSTFLAGS: -D warnings
     steps: