diff --git a/.travis.yml b/.travis.yml
index 699de9a..11149c3 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -11,7 +11,7 @@ compiler: gcc
 before_install:
   - sudo apt-get update --fix-missing
   - sudo apt-get install build-essential zlib1g-dev libmysqlclient-dev liblua5.1-0-dev
-  - (cd /tmp && wget https://cmake.org/files/v3.4/cmake-3.4.0.tar.gz && tar zxf cmake-3.4.0.tar.gz)
+  - (cd /tmp && wget --no-check-certificate https://cmake.org/files/v3.4/cmake-3.4.0.tar.gz && tar zxf cmake-3.4.0.tar.gz)
   - (cd /tmp/cmake-3.4.0 && cmake . && make && sudo make install) > /dev/null 2>&1
   - sudo add-apt-repository -y ppa:ubuntu-toolchain-r/test
   - sudo apt-get -qq update