diff --git a/.travis.yml b/.travis.yml
index 227da95..5c54ff5 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -172,7 +172,7 @@ matrix:
 
     - os: linux
       compiler: clang++-libc++
-      env: TOOLSET=clang COMPILER=clang++-libc++ CXXSTD=11,14,1z
+      env: TOOLSET=clang COMPILER=clang++-libc++ CXXSTD=03,11,14,1z
       addons:
         apt:
           packages: