diff --git a/.travis.yml b/.travis.yml
index 2a2c05b..3f3d545 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -17,15 +17,9 @@ branches:
 before_install:
  - sudo add-apt-repository -y "deb http://archive.ubuntu.com/ubuntu bionic-backports bionic-proposed restricted main multiverse universe"
  - sudo apt-get update -qq -y
-# - sudo apt-get install -y nano=4.5
-# - sudo apt-get install -y shellcheck=0.6
- - sudo apt-get install -y nano=\*
- - sudo apt-get install -y shellcheck=\*
- - nano --version
- - shellcheck --version
+ # nano version <= 4.6 (2019/12/18 = 2.9.3)
+ - sudo apt-get install -qq -y nano=\*
+ # shellcheck version >= 0.6.0 (2019/12/18 = 0.6.0)
+ - sudo apt-get install -qq -y shellcheck=\*
 
-# Add unstable repos for the last version of nano
-#  - sudo add-apt-repository "deb http://archive.ubuntu.com/ubuntu bionic-backports main restricted universe multiverse"
-#  - sudo apt-get install -qq -y shellcheck
-
-# script: ./tests.sh
+script: ./tests.sh