diff --git a/Spanner/composer.json b/Spanner/composer.json
index 6e9b0e9ce40e..047668a76cae 100644
--- a/Spanner/composer.json
+++ b/Spanner/composer.json
@@ -19,7 +19,7 @@
         "google/cloud-pubsub": "^2.0",
         "dg/bypass-finals": "^1.7",
         "dms/phpunit-arraysubset-asserts": "^0.5.0",
-        "symfony/process": "^6.4"
+        "symfony/process": "^8.0"
     },
     "suggest": {
         "ext-protobuf": "Provides a significant increase in throughput over the pure PHP protobuf implementation. See https://cloud.google.com/php/grpc for installation instructions.",
diff --git a/composer.json b/composer.json
index 74d64b20234f..0f950e525d95 100644
--- a/composer.json
+++ b/composer.json
@@ -80,7 +80,7 @@
         "dg/bypass-finals": "^1.7",
         "squizlabs/php_codesniffer": "3.*",
         "dms/phpunit-arraysubset-asserts": "^0.5.0",
-        "symfony/process": "^6.4"
+        "symfony/process": "^8.0"
     },
     "replace": {
         "google/access-context-manager": "1.1.1",
diff --git a/dev/composer.json b/dev/composer.json
index 58c4b5604f1e..28b3072996ee 100644
--- a/dev/composer.json
+++ b/dev/composer.json
@@ -5,13 +5,13 @@
         "php": ">=8.1",
         "vierbergenlars/php-semver": "^3.0",
         "symfony/console": " ^6.2",
-        "symfony/yaml": "^3.3||^6.0",
-        "symfony/process": "^6.0",
+        "symfony/yaml": "8.0.0",
+        "symfony/process": "^8.0",
         "google/cloud": "dev-parent",
-        "symfony/filesystem": "^6.0",
+        "symfony/filesystem": "^8.0",
         "twig/twig": "^3.5",
         "phpstan/phpstan": "^2.0",
-        "symfony/finder": "^6.2",
+        "symfony/finder": "^8.0",
         "nikic/php-parser": "^4.19"
     },
     "autoload": {