diff --git a/BigQuery/composer.json b/BigQuery/composer.json
index c8cffbdffc10..5df22a8c442d 100644
--- a/BigQuery/composer.json
+++ b/BigQuery/composer.json
@@ -12,7 +12,7 @@
         "phpunit/phpunit": "^9.0",
         "phpspec/prophecy-phpunit": "^2.0",
         "squizlabs/php_codesniffer": "2.*",
-        "phpdocumentor/reflection": "^5.3.3",
+        "phpdocumentor/reflection": "^6.0.0",
         "phpdocumentor/reflection-docblock": "^5.3",
         "erusev/parsedown": "^1.6",
         "google/cloud-storage": "^1.3"
diff --git a/Bigtable/composer.json b/Bigtable/composer.json
index 4103987dc741..d3b36fe5f4ce 100644
--- a/Bigtable/composer.json
+++ b/Bigtable/composer.json
@@ -11,7 +11,7 @@
     "require-dev": {
         "phpunit/phpunit": "^9.0",
         "erusev/parsedown": "^1.6",
-        "phpdocumentor/reflection": "^5.3.3",
+        "phpdocumentor/reflection": "^6.0.0",
         "phpdocumentor/reflection-docblock": "^5.3",
         "phpspec/prophecy-phpunit": "^2.0"
     },
diff --git a/Core/composer.json b/Core/composer.json
index 9dcd7f30dd64..64207531850c 100644
--- a/Core/composer.json
+++ b/Core/composer.json
@@ -18,7 +18,7 @@
         "phpunit/phpunit": "^9.0",
         "phpspec/prophecy-phpunit": "^2.0",
         "squizlabs/php_codesniffer": "2.*",
-        "phpdocumentor/reflection": "^5.3.3",
+        "phpdocumentor/reflection": "^6.0.0",
         "phpdocumentor/reflection-docblock": "^5.3",
         "erusev/parsedown": "^1.6",
         "opis/closure": "^3",
diff --git a/Datastore/composer.json b/Datastore/composer.json
index fcc0640abdf8..906c2a5db598 100644
--- a/Datastore/composer.json
+++ b/Datastore/composer.json
@@ -12,7 +12,7 @@
         "phpunit/phpunit": "^9.0",
         "phpspec/prophecy-phpunit": "^2.0",
         "squizlabs/php_codesniffer": "2.*",
-        "phpdocumentor/reflection": "^5.3.3",
+        "phpdocumentor/reflection": "^6.0.0",
         "phpdocumentor/reflection-docblock": "^5.3",
         "erusev/parsedown": "^1.6"
     },
diff --git a/Debugger/composer.json b/Debugger/composer.json
index 721bbfdcff2c..33a77695313a 100644
--- a/Debugger/composer.json
+++ b/Debugger/composer.json
@@ -15,7 +15,7 @@
         "phpunit/phpunit": "^9.0",
         "phpspec/prophecy-phpunit": "^2.0",
         "squizlabs/php_codesniffer": "2.*",
-        "phpdocumentor/reflection": "^5.3.3",
+        "phpdocumentor/reflection": "^6.0.0",
         "phpdocumentor/reflection-docblock": "^5.3",
         "erusev/parsedown": "^1.6",
         "google/cloud-tools": "^0.13.0",
diff --git a/Firestore/composer.json b/Firestore/composer.json
index f5b2a2ae3795..1ed0a4a970a4 100644
--- a/Firestore/composer.json
+++ b/Firestore/composer.json
@@ -14,7 +14,7 @@
         "phpunit/phpunit": "^9.0",
         "phpspec/prophecy-phpunit": "^2.0",
         "squizlabs/php_codesniffer": "2.*",
-        "phpdocumentor/reflection": "^5.3.3",
+        "phpdocumentor/reflection": "^6.0.0",
         "phpdocumentor/reflection-docblock": "^5.3",
         "erusev/parsedown": "^1.6"
     },
diff --git a/Language/composer.json b/Language/composer.json
index 131cc446398a..750f44b95e09 100644
--- a/Language/composer.json
+++ b/Language/composer.json
@@ -12,7 +12,7 @@
         "phpunit/phpunit": "^9.0",
         "phpspec/prophecy-phpunit": "^2.0",
         "squizlabs/php_codesniffer": "2.*",
-        "phpdocumentor/reflection": "^5.3.3",
+        "phpdocumentor/reflection": "^6.0.0",
         "phpdocumentor/reflection-docblock": "^5.3",
         "erusev/parsedown": "^1.6",
         "google/cloud-storage": "^1.3"
diff --git a/Logging/composer.json b/Logging/composer.json
index 5a0414702806..609366015207 100644
--- a/Logging/composer.json
+++ b/Logging/composer.json
@@ -12,7 +12,7 @@
         "phpunit/phpunit": "^9.0",
         "phpspec/prophecy-phpunit": "^2.0",
         "squizlabs/php_codesniffer": "2.*",
-        "phpdocumentor/reflection": "^5.3.3",
+        "phpdocumentor/reflection": "^6.0.0",
         "phpdocumentor/reflection-docblock": "^5.3",
         "erusev/parsedown": "^1.6",
         "fig/log-test": "^1.1",
diff --git a/PubSub/composer.json b/PubSub/composer.json
index b551813ac56a..e3810e634f6d 100644
--- a/PubSub/composer.json
+++ b/PubSub/composer.json
@@ -12,7 +12,7 @@
         "phpunit/phpunit": "^9.0",
         "phpspec/prophecy-phpunit": "^2.0",
         "squizlabs/php_codesniffer": "2.*",
-        "phpdocumentor/reflection": "^5.3.3",
+        "phpdocumentor/reflection": "^6.0.0",
         "phpdocumentor/reflection-docblock": "^5.3",
         "erusev/parsedown": "^1.6",
         "flix-tech/avro-php": "^5.0.0"
diff --git a/Spanner/composer.json b/Spanner/composer.json
index 379d4e2d1492..767fe940efcd 100644
--- a/Spanner/composer.json
+++ b/Spanner/composer.json
@@ -13,7 +13,7 @@
         "phpunit/phpunit": "^9.0",
         "phpspec/prophecy-phpunit": "^2.0",
         "squizlabs/php_codesniffer": "2.*",
-        "phpdocumentor/reflection": "^5.3.3",
+        "phpdocumentor/reflection": "^6.0.0",
         "phpdocumentor/reflection-docblock": "^5.3",
         "erusev/parsedown": "^1.6",
         "google/cloud-pubsub": "^2.0"
diff --git a/Speech/composer.json b/Speech/composer.json
index 153c108fc297..d6a54bb62839 100644
--- a/Speech/composer.json
+++ b/Speech/composer.json
@@ -12,7 +12,7 @@
         "phpunit/phpunit": "^9.0",
         "phpspec/prophecy-phpunit": "^2.0",
         "squizlabs/php_codesniffer": "2.*",
-        "phpdocumentor/reflection": "^5.3.3",
+        "phpdocumentor/reflection": "^6.0.0",
         "phpdocumentor/reflection-docblock": "^5.3",
         "erusev/parsedown": "^1.6",
         "google/cloud-storage": "^1.3"
diff --git a/Storage/composer.json b/Storage/composer.json
index 4c9900893a58..3f64c7aa2ffd 100644
--- a/Storage/composer.json
+++ b/Storage/composer.json
@@ -12,7 +12,7 @@
         "phpunit/phpunit": "^9.0",
         "phpspec/prophecy-phpunit": "^2.0",
         "squizlabs/php_codesniffer": "2.*",
-        "phpdocumentor/reflection": "^5.3.3",
+        "phpdocumentor/reflection": "^6.0.0",
         "phpdocumentor/reflection-docblock": "^5.3",
         "erusev/parsedown": "^1.6",
         "phpseclib/phpseclib": "^2.0||^3.0",
diff --git a/Trace/composer.json b/Trace/composer.json
index 549cf714dbc6..5559afe04ed2 100644
--- a/Trace/composer.json
+++ b/Trace/composer.json
@@ -13,7 +13,7 @@
         "phpunit/phpunit": "^9.0",
         "phpspec/prophecy-phpunit": "^2.0",
         "squizlabs/php_codesniffer": "2.*",
-        "phpdocumentor/reflection": "^5.3.3",
+        "phpdocumentor/reflection": "^6.0.0",
         "phpdocumentor/reflection-docblock": "^5.3",
         "erusev/parsedown": "^1.6"
     },
diff --git a/Translate/composer.json b/Translate/composer.json
index 56278fa00180..00bf355be0e7 100644
--- a/Translate/composer.json
+++ b/Translate/composer.json
@@ -12,7 +12,7 @@
         "phpunit/phpunit": "^9.0",
         "phpspec/prophecy-phpunit": "^2.0",
         "squizlabs/php_codesniffer": "2.*",
-        "phpdocumentor/reflection": "^5.3.3",
+        "phpdocumentor/reflection": "^6.0.0",
         "phpdocumentor/reflection-docblock": "^5.3",
         "erusev/parsedown": "^1.6"
     },
diff --git a/Vision/composer.json b/Vision/composer.json
index a8a5496a810a..21d8ac7eeb55 100644
--- a/Vision/composer.json
+++ b/Vision/composer.json
@@ -12,7 +12,7 @@
         "phpunit/phpunit": "^9.0",
         "phpspec/prophecy-phpunit": "^2.0",
         "squizlabs/php_codesniffer": "2.*",
-        "phpdocumentor/reflection": "^5.3.3",
+        "phpdocumentor/reflection": "^6.0.0",
         "phpdocumentor/reflection-docblock": "^5.3",
         "erusev/parsedown": "^1.6",
         "google/cloud-storage": "^1.12"
diff --git a/composer.json b/composer.json
index cae9a92ca18b..f6fe767bed09 100644
--- a/composer.json
+++ b/composer.json
@@ -56,7 +56,7 @@
     },
     "require-dev": {
         "phpunit/phpunit": "^9.6",
-        "phpdocumentor/reflection": "^5.0",
+        "phpdocumentor/reflection": "^6.0",
         "erusev/parsedown": "^1.6",
         "phpseclib/phpseclib": "^3.0",
         "google/cloud-tools": "^0.13.0",