diff --git a/.travis.yml b/.travis.yml
index f8cf9a2..bbb00eb 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -8,9 +8,10 @@ addons:
     - debian-sid
     packages:
     - shellcheck
+    - openssl
 
 script:
  - bash -c 'export SHELLCHECK_OPTS="-e SC2006"; shopt -s globstar; shellcheck **/*.sh easyrsa3/easyrsa'
  - bash -c 'pwd'
  - bash -c 'ls -la'
- - bash -c 'sh -x op_test.sh'
+ - sh -x op_test.sh