diff --git a/spec/travis_build.sh b/spec/travis_build.sh
index 1bb3515..d313be7 100755
--- a/spec/travis_build.sh
+++ b/spec/travis_build.sh
@@ -1,6 +1,6 @@
 #/usr/bin/env sh
-wget http://downloads.webmproject.org/releases/webp/libwebp-0.4.3.tar.gz
-tar xvzf libwebp-0.4.3.tar.gz
-cd libwebp-0.4.3
+wget http://downloads.webmproject.org/releases/webp/libwebp-0.5.1.tar.gz
+tar xvzf libwebp-0.5.1.tar.gz
+cd libwebp-0.5.1
 ./configure --prefix=$HOME/opt
-make && make install
+make && make install
\ No newline at end of file