diff --git a/.travis.yml b/.travis.yml
index a74c257..07def3a 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -49,9 +49,15 @@ matrix:
     - os: linux
       env: TOOLSET=gcc COMPILER=g++-4.7 CXXSTD=c++03
 
+    - os: linux
+      env: TOOLSET=gcc COMPILER=g++-4.7 CXXSTD=c++11
+
     - os: linux
       env: TOOLSET=gcc COMPILER=g++-4.8 CXXSTD=c++03
 
+    - os: linux
+      env: TOOLSET=gcc COMPILER=g++-4.8 CXXSTD=c++11
+
     - os: linux
       env: TOOLSET=gcc COMPILER=g++-4.9 CXXSTD=c++03
 
@@ -64,6 +70,9 @@ matrix:
     - os: linux
       env: TOOLSET=gcc COMPILER=g++-5 CXXSTD=c++11
 
+    - os: linux
+      env: TOOLSET=gcc COMPILER=g++-5 CXXSTD=c++14
+
     - os: linux
       env: TOOLSET=gcc COMPILER=g++-6 CXXSTD=c++03