diff --git a/.travis.yml b/.travis.yml
index 3cf3c7f..4dcd2fa 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -9,6 +9,7 @@ env:
 before_install:
   - sudo apt-get -qq update
   - sudo apt-get install -y libboost-test-dev
+  - sudo apt-get install -y libboost-thread-dev
   - sudo apt-get install -y swig 
 
 #install: