diff --git a/.travis.yml b/.travis.yml
index 62a923476..15e483d9b 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -29,9 +29,9 @@ matrix:
 install:
   - sudo add-apt-repository -y 'ppa:ubuntu-toolchain-r/test'
   - sudo add-apt-repository -y 'deb http://llvm.org/apt/precise/ llvm-toolchain-precise-3.8 main'
-  - curl http://llvm.org/apt/llvm-snapshot.gpg.key | sudo apt-key add -
+  - wget -O - http://llvm.org/apt/llvm-snapshot.gpg.key | sudo apt-key add - 
   - sudo apt-get update -qq
-  - if [[ "$CODE_BUILD" == "1" ]]; then sudo apt-get install -y -qq libx11-dev mesa-common-dev libgl1-mesa-dev qt5-default libqt5x11extras5-dev libxcb-keysyms1-dev gdb clang-format-3.8 ; fi
+  - if [[ "$CODE_BUILD" == "1" ]]; then sudo apt-get install --allow-unauthenticated -y -qq libx11-dev mesa-common-dev libgl1-mesa-dev qt5-default libqt5x11extras5-dev libxcb-keysyms1-dev gdb clang-format-3.8 ; fi
   - if [[ "$DOCS_BUILD" == "1" ]]; then sudo pip install --upgrade pip setuptools ; sudo pip install Sphinx sphinx-rtd-theme ; fi
 
 script: