diff --git a/.travis.yml b/.travis.yml
index 6cc78db1d3..3cb219ae1b 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -23,9 +23,9 @@ before_install:
     - sudo add-apt-repository ppa:ubuntu-toolchain-r/test -y
     - sudo add-apt-repository ppa:terry.guo/gcc-arm-embedded -y
     - sudo apt-get update -qq
-    - if [ "$CXX" = "g++" ]; then sudo apt-get install -qq g++-4.8; fi
+    - if [ "$CXX" = "g++" ]; then sudo apt-get install --force-yes -qq g++-4.8; fi
     - if [ "$CXX" = "g++" ]; then export CXX="g++-4.8" CC="gcc-4.8"; fi
-    - sudo apt-get install libgtest-dev gcc-arm-none-eabi
+    - sudo apt-get install --force-yes libgtest-dev gcc-arm-none-eabi
     - "cd /usr/src/gtest && sudo cmake . && sudo cmake --build . && sudo mv libg* /usr/local/lib/ ; cd -"
 before_script: "mkdir build && cd build && cmake .. -DCMAKE_BUILD_TYPE=Debug -DCONTINUOUS_INTEGRATION_BUILD=1"
 script: