diff --git a/.travis.yml b/.travis.yml
index a5f956529..9a15e9a90 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -5,6 +5,7 @@ env:
    - CMAKE_CXX_COMPILER=clang++-3.3
      CMAKE_BUILD_TYPE=DEBUG
      USE_TCMALLOC=TRUE
+     BUILD_DOXYGEN=TRUE
    - CMAKE_CXX_COMPILER=g++-4.8
      CMAKE_BUILD_TYPE=DEBUG
      USE_TCMALLOC=TRUE
@@ -35,9 +36,9 @@ before_script:
 script:
   - make
   - ctest -T test -VV
+  - cd ..; if [[ $BUILD_DOXYGEN == TRUE ]]; then sudo apt-get -qq install doxygen graphviz; doxygen src/Doxyfile; COMMIT_LOG=`git log --oneline -n 1`; git config user.email "soonhok@cs.cmu.edu"; git config user.name "Soonho Kong"; git checkout -B gh-pages gh-pages; git add -A doc;  git commit -m "Update doxygen - $COMMIT_LOG"; git push origin gh-pages; git checkout master; fi
 
 install:
-  -
   - sudo add-apt-repository --yes ppa:ubuntu-toolchain-r/test
   - sudo add-apt-repository --yes ppa:h-rayflood/llvm
   - sudo apt-get -qq update