diff --git a/.travis.yml b/.travis.yml
index 8b5caa5e..97d82dc1 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -4,7 +4,7 @@ php: 7.3
 before_install:
 - nvm install 10
 - node -v
-- curl -o- -L https://yarnpkg.com/install.sh | bash -s -- --version version-number
+- curl -o- -L https://yarnpkg.com/install.sh | bash -s -- --version 1.15.2
 - export PATH="$HOME/.yarn/bin:$PATH"
 
 install: