diff --git a/.travis.yml b/.travis.yml
index 5f44de52..92406172 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -2,7 +2,7 @@ matrix:
   include:
     - os: osx
       osx_image: xcode9.4
-      env: SWIFT_VERSION=4.0
+      env: SWIFT_VERSION=4.1
     - os: osx
       osx_image: xcode10
       env: SWIFT_VERSION=4.2