diff --git a/.travis.yml b/.travis.yml
index 422750f..6180729 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -3,7 +3,7 @@ language: python
 python:
         - 3.7
 before_install:
-  - sudo apt-get -y install wget
+  - sudo apt-get -y install wget libevent-dev libssl-dev
   - wget https://dist.torproject.org/tor-0.4.2.7.tar.gz
   - tar -xzf tor-0.4.2.7.tar.gz
   - cd tor-0.4.2.7/