diff --git a/.travis.yml b/.travis.yml
index 0a14366f7..3013fae0e 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -51,7 +51,6 @@ install:
   - if [[ "${UPGRADE_AWS_SDK}" == "yes" ]]; then composer require --dev --ignore-platform-reqs aws/aws-sdk-php:^3.147.3; fi
 
 script:
-  - export FLYSYSTEM_TEST_SFTP=yes
   - if [[ "${DISABLE_TRAVIS_RETRY}" == "yes" ]]; then vendor/bin/phpunit --coverage-text --coverage-clover=coverage.xml; fi
   - if [[ "${DISABLE_TRAVIS_RETRY}" != "yes" ]]; then travis_retry vendor/bin/phpunit --coverage-text --coverage-clover=coverage.xml; fi
   - vendor/bin/phpstan analyse -l 6 src
diff --git a/phpunit.xml.dist b/phpunit.xml.dist
index 93fff87dc..be8fed61f 100644
--- a/phpunit.xml.dist
+++ b/phpunit.xml.dist
@@ -5,7 +5,9 @@
             <directory suffix="Test.php">src/</directory>
         </testsuite>
     </testsuites>
-
+    <php>
+        <env name="FLYSYSTEM_TEST_SFTP" value="yes" />
+    </php>
     <filter>
         <whitelist>
             <directory>src/</directory>