diff --git a/.travis.yml b/.travis.yml
index cf881fb..a03f560 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -32,4 +32,4 @@ script:
   - if [ "$TRAVIS_PHP_VERSION" == "7.0" ]; then composer require "friendsofphp/php-cs-fixer:^2.0" && bin/php-cs-fixer fix --diff --dry-run -v; fi;
 
 after_success:
-  - if [ "$TRAVIS_PHP_VERSION" == "5.6" ]; then composer require "satooshi/php-coveralls:^1.0" && travis_retry php vendor/bin/coveralls -v; fi
+  - if [ "$TRAVIS_PHP_VERSION" == "5.6" ]; then composer require "satooshi/php-coveralls:^1.0" && travis_retry php bin/coveralls -v; fi
diff --git a/lib/promise-adapter/.travis.yml b/lib/promise-adapter/.travis.yml
index 5aa40e3..c382761 100644
--- a/lib/promise-adapter/.travis.yml
+++ b/lib/promise-adapter/.travis.yml
@@ -30,4 +30,4 @@ install: composer update --prefer-dist --no-interaction
 script: if [ "$TRAVIS_PHP_VERSION" == "5.6" ]; then bin/phpunit --debug --coverage-clover build/logs/clover.xml; else bin/phpunit --debug; fi
 
 after_success:
-  - if [ "$TRAVIS_PHP_VERSION" == "5.6" ]; then composer require "satooshi/php-coveralls:^1.0" && travis_retry php vendor/bin/coveralls -v; fi
+  - if [ "$TRAVIS_PHP_VERSION" == "5.6" ]; then composer require "satooshi/php-coveralls:^1.0" && travis_retry php bin/coveralls -v; fi