diff --git a/.travis/build-ubuntu-16-04.sh b/.travis/build-ubuntu-16-04.sh
index 066ad314d..7f59e2bdc 100755
--- a/.travis/build-ubuntu-16-04.sh
+++ b/.travis/build-ubuntu-16-04.sh
@@ -119,7 +119,7 @@ cd ../../
 # libsodium
 git clone git://github.com/jedisct1/libsodium.git
 cd libsodium
-git checkout tags/1.0.8
+git checkout tags/1.0.18
 ./autogen.sh
 CC="ccache $CC" CXX="ccache $CXX" ./configure
 CC="ccache $CC" CXX="ccache $CXX" make -j$(nproc)