diff --git a/.travis.yml b/.travis.yml
index e7aa0ea57a..363f10bad3 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -2,6 +2,7 @@ language: perl
 before_install:
 - openssl aes-256-cbc -K $encrypted_daaf322d08bf_key -iv $encrypted_daaf322d08bf_iv
   -in $TRAVIS_BUILD_DIR/package/deploy/slic3r-upload.rsa.enc -out ~/slic3r-upload.rsa -d
+- chmod 600 ~/slic3r-upload.rsa
 install:
 - export LDLOADLIBS=-lstdc++
 - export BOOST_DIR=$HOME/boost_1_63_0