diff --git a/.travis.yml b/.travis.yml
index b5dd214..1dade8c 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -336,8 +336,9 @@ matrix:
       env: TOOLSET=clang COMPILER=clang++ CXXSTD=c++1z
 
 install:
+  - BOOST_BRANCH=develop && [ "$TRAVIS_BRANCH" == "master" ] && BOOST_BRANCH=master || true
   - cd ..
-  - git clone -b $TRAVIS_BRANCH --depth 1 https://github.com/boostorg/boost.git boost-root
+  - git clone -b $BOOST_BRANCH --depth 1 https://github.com/boostorg/boost.git boost-root
   - cd boost-root
   - git submodule update --init tools/build
   - git submodule update --init libs/config
@@ -350,7 +351,7 @@ install:
 script:
   - |-
     echo "using $TOOLSET : : $COMPILER : <cxxflags>-std=$CXXSTD ;" > ~/user-config.jam
-  - ./b2 libs/static_assert/test toolset=$TOOLSET
+  - ./b2 -j3 libs/static_assert/test toolset=$TOOLSET
 
 notifications:
   email: