diff --git a/.travis.yml b/.travis.yml
index 22a0c86..2f797e9 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -24,6 +24,8 @@ env:
 addons:
   apt:
     packages:
+      - g++-4.7
+      - g++-4.8
       - g++-4.9
       - g++-5
       - g++-6
@@ -43,6 +45,12 @@ matrix:
     - env: BOGUS_JOB=true
 
   include:
+    - os: linux
+      env: TOOLSET=gcc COMPILER=g++-4.7 CXXSTD=c++11
+
+    - os: linux
+      env: TOOLSET=gcc COMPILER=g++-4.8 CXXSTD=c++11
+
     - os: linux
       env: TOOLSET=gcc COMPILER=g++-4.9 CXXSTD=c++11