diff --git a/.travis.yml b/.travis.yml
index 482459d..a9104d4 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -75,6 +75,10 @@ matrix:
           sources:
             - ubuntu-toolchain-r-test
 
+    - os: linux
+      dist: trusty
+      env: TOOLSET=gcc COMPILER=g++- CXXSTD=03,11
+
     - os: linux
       dist: bionic
       compiler: g++-11