diff --git a/.travis.yml b/.travis.yml
index 6b2d555..9c796ea 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -31,6 +31,7 @@ addons:
             - lcov
             - llvm-3.8
             - valgrind
+            - libjansson-dev
 
 
 before_install: