diff --git a/.github/workflows/lint.yaml b/.github/workflows/lint.yaml
index 18b4d00d..3c40baf4 100644
--- a/.github/workflows/lint.yaml
+++ b/.github/workflows/lint.yaml
@@ -21,6 +21,6 @@ jobs:
 
     - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
     - name: PHP-CS-Fixer
-      uses: docker://oskarstark/php-cs-fixer-ga:latest@sha256:b9b4d3b392a37371332a452d0ff2891bf4971b57ddb2b52b8a7fac31d87f4dae
+      uses: docker://oskarstark/php-cs-fixer-ga:latest@sha256:a4dc1c964e0f4118aef8ba80ee329157cf1e857e70f4cd1efdc22856887c1d14
       with:
         args: . --diff --dry-run
diff --git a/.gitignore b/.gitignore
index 124e0b88..1f6ab2aa 100644
--- a/.gitignore
+++ b/.gitignore
@@ -6,4 +6,5 @@ vendor/
 .idea/
 /.php_cs.cache
 *.iml
-.phpunit.result.cache
\ No newline at end of file
+.phpunit.result.cache
+.php-cs-fixer.cache
diff --git a/examples/hello/index.php b/examples/hello/index.php
index e82e139a..bc4d0987 100644
--- a/examples/hello/index.php
+++ b/examples/hello/index.php
@@ -1,4 +1,5 @@
 <?php
+
 /**
  * Copyright 2019 Google LLC.
  *
diff --git a/src/Context.php b/src/Context.php
index ee9376b5..42df7388 100644
--- a/src/Context.php
+++ b/src/Context.php
@@ -1,4 +1,5 @@
 <?php
+
 /**
  * Copyright 2019 Google LLC.
  *
diff --git a/src/Emitter.php b/src/Emitter.php
index 24b85363..6bd236a3 100644
--- a/src/Emitter.php
+++ b/src/Emitter.php
@@ -1,4 +1,5 @@
 <?php
+
 /**
  * Copyright 2019 Google LLC.
  *
diff --git a/src/FunctionValidationTrait.php b/src/FunctionValidationTrait.php
index 99bf9a62..360757e8 100644
--- a/src/FunctionValidationTrait.php
+++ b/src/FunctionValidationTrait.php
@@ -1,4 +1,5 @@
 <?php
+
 /**
  * Copyright 2023 Google LLC.
  *
diff --git a/src/FunctionWrapper.php b/src/FunctionWrapper.php
index b663f958..f13385fb 100644
--- a/src/FunctionWrapper.php
+++ b/src/FunctionWrapper.php
@@ -1,4 +1,5 @@
 <?php
+
 /**
  * Copyright 2019 Google LLC.
  *
diff --git a/src/HttpFunctionWrapper.php b/src/HttpFunctionWrapper.php
index 31fbd251..659513f0 100644
--- a/src/HttpFunctionWrapper.php
+++ b/src/HttpFunctionWrapper.php
@@ -1,4 +1,5 @@
 <?php
+
 /**
  * Copyright 2019 Google LLC.
  *
diff --git a/src/LegacyEventMapper.php b/src/LegacyEventMapper.php
index 77f57a2a..95b39d0b 100644
--- a/src/LegacyEventMapper.php
+++ b/src/LegacyEventMapper.php
@@ -1,4 +1,5 @@
 <?php
+
 /**
  * Copyright 2020 Google LLC.
  *
diff --git a/src/ProjectContext.php b/src/ProjectContext.php
index 7ac61e1d..245b518f 100644
--- a/src/ProjectContext.php
+++ b/src/ProjectContext.php
@@ -1,4 +1,5 @@
 <?php
+
 /**
  * Copyright 2021 Google LLC.
  *
diff --git a/tests/ContextTest.php b/tests/ContextTest.php
index 044bd4fe..ec629ccc 100644
--- a/tests/ContextTest.php
+++ b/tests/ContextTest.php
@@ -1,4 +1,5 @@
 <?php
+
 /**
  * Copyright 2019 Google LLC.
  *
diff --git a/tests/EmitterTest.php b/tests/EmitterTest.php
index e916de0c..e8bb79bc 100644
--- a/tests/EmitterTest.php
+++ b/tests/EmitterTest.php
@@ -1,4 +1,5 @@
 <?php
+
 /**
  * Copyright 2020 Google LLC.
  *
@@ -23,7 +24,6 @@
 
 /**
  * @group gcf-framework
- * @runClassInSeparateProcess
  */
 class EmitterTest extends TestCase
 {
diff --git a/tests/FunctionsFrameworkTest.php b/tests/FunctionsFrameworkTest.php
index fffd890a..df2594e2 100644
--- a/tests/FunctionsFrameworkTest.php
+++ b/tests/FunctionsFrameworkTest.php
@@ -1,4 +1,5 @@
 <?php
+
 /**
  * Copyright 2021 Google LLC.
  *
diff --git a/tests/HttpFunctionWrapperTest.php b/tests/HttpFunctionWrapperTest.php
index 379184fa..6cd234c0 100644
--- a/tests/HttpFunctionWrapperTest.php
+++ b/tests/HttpFunctionWrapperTest.php
@@ -1,4 +1,5 @@
 <?php
+
 /**
  * Copyright 2019 Google LLC.
  *
diff --git a/tests/dockerTest.php b/tests/dockerTest.php
index dce2eba1..05f290f9 100644
--- a/tests/dockerTest.php
+++ b/tests/dockerTest.php
@@ -1,4 +1,5 @@
 <?php
+
 /**
  * Copyright 2020 Google LLC.
  *
diff --git a/tests/exampleTest.php b/tests/exampleTest.php
index 77da3368..3800d84b 100644
--- a/tests/exampleTest.php
+++ b/tests/exampleTest.php
@@ -1,4 +1,5 @@
 <?php
+
 /**
  * Copyright 2020 Google LLC.
  *
diff --git a/tests/vendorTest.php b/tests/vendorTest.php
index 6ada5077..d906088c 100644
--- a/tests/vendorTest.php
+++ b/tests/vendorTest.php
@@ -1,4 +1,5 @@
 <?php
+
 /**
  * Copyright 2020 Google LLC.
  *