diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 049bc62..39a3608 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -27,10 +27,10 @@ jobs:
           - 5.3
     steps:
       - uses: actions/checkout@v2
-      - name: Setup PHP
-        uses: shivammathur/setup-php@v2
+      - uses: shivammathur/setup-php@v2
         with:
           php-version: ${{ matrix.php }}
+          coverage: xdebug
       - run: composer install
       - run: vendor/bin/phpunit --coverage-text
         if: ${{ matrix.php >= 7.3 }}
@@ -45,4 +45,5 @@ jobs:
         if: ${{ matrix.php >= 7.1 && matrix.php < 8.0 }}
       - run: composer require symfony/console:^3.0 --dry-run --working-dir=tests/install-as-dep
         if: ${{ matrix.php >= 5.5 && matrix.php < 8.0 }}
-      - run: composer install --dry-run --working-dir=tests/install-as-dep
+      - run: cd tests/install-as-dep && composer install && php query.php
+      - run: cd tests/install-as-dep && php -d phar.readonly=0 vendor/bin/phar-composer build . query.phar && php query.phar
diff --git a/src/Phar/PharComposer.php b/src/Phar/PharComposer.php
index 69f584a..bf3467c 100644
--- a/src/Phar/PharComposer.php
+++ b/src/Phar/PharComposer.php
@@ -208,6 +208,7 @@ public function build()
         // failure to write will emit a warning (ignore) and throw an (uncaught) exception
         try {
             @$targetPhar->stopBuffering();
+            $targetPhar = null;
         } catch (\PharException $e) {
             throw new \RuntimeException('Unable to write phar: ' . $e->getMessage());
         }
@@ -223,8 +224,12 @@ public function build()
             $this->log('  - Overwriting existing file <info>' . $target . '</info> (' . $this->getSize($target) . ')');
         }
 
-        if (rename($tmp, $target) === false) {
-            throw new \UnexpectedValueException('Unable to rename temporary phar archive to "'.$target.'"');
+        if (@rename($tmp, $target) === false) {
+            // retry renaming after sleeping to give slow network drives some time to flush data
+            sleep(5);
+            if (rename($tmp, $target) === false) {
+                throw new \UnexpectedValueException('Unable to rename temporary phar archive to "'.$target.'"');
+            }
         }
 
         $time = max(microtime(true) - $time, 0);
diff --git a/tests/install-as-dep/.gitignore b/tests/install-as-dep/.gitignore
new file mode 100644
index 0000000..070e2f2
--- /dev/null
+++ b/tests/install-as-dep/.gitignore
@@ -0,0 +1,3 @@
+/composer.lock
+/query.phar
+/vendor/
diff --git a/tests/install-as-dep/composer.json b/tests/install-as-dep/composer.json
index e1bc438..5b69f75 100644
--- a/tests/install-as-dep/composer.json
+++ b/tests/install-as-dep/composer.json
@@ -5,10 +5,16 @@
     "require-dev": {
         "clue/phar-composer": "*@dev"
     },
+    "bin": [
+        "query.php"
+    ],
     "repositories": [
         {
             "type": "path",
-            "url": "../../"
+            "url": "../../",
+            "options": {
+                "symlink": false
+            }
         }
     ]
 }
diff --git a/tests/install-as-dep/query.php b/tests/install-as-dep/query.php
new file mode 100644
index 0000000..5364e95
--- /dev/null
+++ b/tests/install-as-dep/query.php
@@ -0,0 +1,5 @@
+<?php
+
+require __DIR__ . '/vendor/autoload.php';
+
+echo 'Answer: 42' . PHP_EOL;