diff --git a/.appveyor.yml b/.appveyor.yml
index 5146a65ae6..188dfe78a2 100644
--- a/.appveyor.yml
+++ b/.appveyor.yml
@@ -54,6 +54,8 @@ install:
     - php composer.phar self-update
     - copy /Y .github\composer-config.json %APPDATA%\Composer\config.json
     - php composer.phar global require --no-progress --no-scripts --no-plugins symfony/flex dev-master
+    - git config --global user.email ""
+    - git config --global user.name "Symfony"
     - php .github/build-packages.php "HEAD^" src\Symfony\Bridge\PhpUnit
     - IF %APPVEYOR_REPO_BRANCH%==master (SET COMPOSER_ROOT_VERSION=dev-master) ELSE (SET COMPOSER_ROOT_VERSION=%APPVEYOR_REPO_BRANCH%.x-dev)
     - php composer.phar config platform.php 5.5.9
diff --git a/.github/build-packages.php b/.github/build-packages.php
index d859e3ec80..81a3099111 100644
--- a/.github/build-packages.php
+++ b/.github/build-packages.php
@@ -47,7 +47,7 @@ foreach ($dirs as $k => $dir) {
     if (isset($preferredInstall[$package->name]) && 'source' === $preferredInstall[$package->name]) {
         passthru("cd $dir && tar -cf package.tar --exclude='package.tar' *");
     } else {
-        passthru("cd $dir && git init && git add . && git commit --author \"Symfony <>\" -m - && git archive -o package.tar HEAD && rm .git/ -Rf");
+        passthru("cd $dir && git init && git add . && git commit -q -m - && git archive -o package.tar HEAD && rm .git/ -Rf");
     }
 
     if (!isset($package->extra->{'branch-alias'}->{'dev-master'})) {
diff --git a/.travis.yml b/.travis.yml
index 682b50b155..99595ca5f8 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -212,6 +212,9 @@ install:
 
     - |
       # Create local composer packages for each patched components and reference them in composer.json files when cross-testing components
+      git config --global user.email ""
+      git config --global user.name "Symfony"
+
       if [[ ! $deps ]]; then
           php .github/build-packages.php HEAD^ src/Symfony/Bridge/PhpUnit
       else