diff --git a/.circleci/config.yml b/.circleci/config.yml
index 8883d9f7..8ddf8186 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -2,7 +2,7 @@ version: 2
 jobs:
   build:
     macos:
-      xcode: "9.2"
+      xcode: "9.2.0"
     steps:
       - checkout
       - run: swift build