diff --git a/travis/cibuild b/travis/cibuild
index 0303686..44dbe91 100755
--- a/travis/cibuild
+++ b/travis/cibuild
@@ -7,7 +7,7 @@ export DEBFULLNAME="Daniil Gentili"
 sudo apt-get update &>/dev/null
 sudo apt-get install busybox ruby-ronn build-essential devscripts lintian patch python-pip python3 patchutils gnupg expect dpkg-dev libffi-dev libssl-dev -y
 sudo pip install requests[security]
-sudo pip install pexpect
+sudo -E pip install pexpect
 tar -xzf enc.tar.gz
 gpg --allow-secret-key-import --import mygpgkey_sec.gpg