diff --git a/symfony/panther/1.0/manifest.json b/symfony/panther/1.0/manifest.json
index ee0eb1e37..66255ca3b 100644
--- a/symfony/panther/1.0/manifest.json
+++ b/symfony/panther/1.0/manifest.json
@@ -15,6 +15,12 @@
         "#\ttar -zxf geckodriver-v$GECKODRIVER_VERSION-aarch64.tar.gz -C /usr/bin; \\",
         "#\trm geckodriver-v$GECKODRIVER_VERSION-aarch64.tar.gz"
     ],
+    "dotenv": {
+        "test": {
+            "PANTHER_APP_ENV": "panther",
+            "PANTHER_ERROR_SCREENSHOT_DIR": "./var/error-screenshots"
+        }
+    },
     "add-lines": [
         {
             "file": "phpunit.xml.dist",
@@ -29,13 +35,6 @@
             "position": "after_target",
             "target": "<extensions>",
             "warn_if_missing": false
-        },
-        {
-            "file": ".env.test",
-            "content": "PANTHER_APP_ENV=panther\nPANTHER_ERROR_SCREENSHOT_DIR=./var/error-screenshots",
-            "position": "after_target",
-            "target": "SYMFONY_DEPRECATIONS_HELPER=999999",
-            "warn_if_missing": true
         }
     ]
 }