diff --git a/.travis.yml b/.travis.yml
index e2d474b..2f49a20 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -7,7 +7,7 @@ jobs:
       env: PYVER=3.6
 before_install:
   - sudo apt-get update -qq
-  - sudo apt-get install -qq libarchive-dev
+  - sudo apt-get install -qq libarchive-dev python3-dev
 install:
   - make build
 script: