diff --git a/.travis.yml b/.travis.yml
index 4aff484..f1bd90e 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -11,4 +11,5 @@ compiler:
     - gcc
 
 script:
-    - make CFLAGS=-std=c99 CPPFLAGS=-D_GNU_SOURCE mud.o
+    - git clone --depth=1 https://github.com/jedisct1/libsodium.git --branch=stable
+    - make CFLAGS=-std=c99 CPPFLAGS="-D_GNU_SOURCE -I./libsodium/src/libsodium/include" mud.o