diff --git a/.travis.yml b/.travis.yml
index 9eece1ac..b8787b4c 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -4,6 +4,8 @@ cache:
   directories:
     - "node_modules"
 before_install:
+  - curl -o- -L https://yarnpkg.com/install.sh | bash -s -- --version 1.15.2
+  - export PATH="$HOME/.yarn/bin:$PATH"
   - export BRANCH="${TRAVIS_PULL_REQUEST_BRANCH:-$TRAVIS_BRANCH}"
   - yarn global add greenkeeper-lockfile@1
 install:
diff --git a/package.json b/package.json
index dabf12a0..a049c9e0 100644
--- a/package.json
+++ b/package.json
@@ -21,7 +21,7 @@
   ],
   "engines": {
     "node": "10.15.3",
-    "yarn": "^1.15.2"
+    "yarn": "1.15.2"
   },
   "bin": {
     "augmint-contracts": "./scripts/augmint-contracts.sh"
@@ -58,4 +58,4 @@
       "bignumber.js"
     ]
   }
-}
\ No newline at end of file
+}