diff --git a/docs/dyn/dataflow_v1b3.projects.html b/docs/dyn/dataflow_v1b3.projects.html
index d8229f89ff..5d17354264 100644
--- a/docs/dyn/dataflow_v1b3.projects.html
+++ b/docs/dyn/dataflow_v1b3.projects.html
@@ -274,6 +274,9 @@ <h3>Method Details</h3>
     { # The response to the worker messages.
   &quot;workerMessageResponses&quot;: [ # The servers response to the worker messages.
     { # A worker_message response allows the server to pass information to the sender.
+      &quot;streamingScalingReportResponse&quot;: { # Contains per-user-worker streaming scaling recommendation from the backend. # Service&#x27;s streaming scaling response for workers.
+        &quot;maximumThreadCount&quot;: 42, # Maximum thread count limit;
+      },
       &quot;workerHealthReportResponse&quot;: { # WorkerHealthReportResponse contains information returned to the worker in response to a health ping. # The service&#x27;s response to a worker&#x27;s health report.
         &quot;reportInterval&quot;: &quot;A String&quot;, # A positive value indicates the worker should change its reporting interval to the specified value. The default value of zero means no change in report rate is requested by the server.
       },
diff --git a/docs/dyn/dataflow_v1b3.projects.locations.flexTemplates.html b/docs/dyn/dataflow_v1b3.projects.locations.flexTemplates.html
index 513756d53e..c9662dc645 100644
--- a/docs/dyn/dataflow_v1b3.projects.locations.flexTemplates.html
+++ b/docs/dyn/dataflow_v1b3.projects.locations.flexTemplates.html
@@ -99,7 +99,7 @@ <h3>Method Details</h3>
 { # A request to launch a Cloud Dataflow job from a FlexTemplate.
   &quot;launchParameter&quot;: { # Launch FlexTemplate Parameter. # Required. Parameter to launch a job form Flex Template.
     &quot;containerSpec&quot;: { # Container Spec. # Spec about the container image to launch.
-      &quot;defaultEnvironment&quot;: { # The environment values to be set at runtime for flex template. # Default runtime environment for the job.
+      &quot;defaultEnvironment&quot;: { # The environment values to be set at runtime for flex template. LINT.IfChange # Default runtime environment for the job.
         &quot;additionalExperiments&quot;: [ # Additional experiment flags for the job.
           &quot;A String&quot;,
         ],
@@ -176,7 +176,7 @@ <h3>Method Details</h3>
       },
     },
     &quot;containerSpecGcsPath&quot;: &quot;A String&quot;, # Cloud Storage path to a file with json serialized ContainerSpec as content.
-    &quot;environment&quot;: { # The environment values to be set at runtime for flex template. # The runtime environment for the FlexTemplate job
+    &quot;environment&quot;: { # The environment values to be set at runtime for flex template. LINT.IfChange # The runtime environment for the FlexTemplate job
       &quot;additionalExperiments&quot;: [ # Additional experiment flags for the job.
         &quot;A String&quot;,
       ],
diff --git a/docs/dyn/dataflow_v1b3.projects.locations.html b/docs/dyn/dataflow_v1b3.projects.locations.html
index 330bc11b3b..ff32d4ce0b 100644
--- a/docs/dyn/dataflow_v1b3.projects.locations.html
+++ b/docs/dyn/dataflow_v1b3.projects.locations.html
@@ -252,6 +252,9 @@ <h3>Method Details</h3>
     { # The response to the worker messages.
   &quot;workerMessageResponses&quot;: [ # The servers response to the worker messages.
     { # A worker_message response allows the server to pass information to the sender.
+      &quot;streamingScalingReportResponse&quot;: { # Contains per-user-worker streaming scaling recommendation from the backend. # Service&#x27;s streaming scaling response for workers.
+        &quot;maximumThreadCount&quot;: 42, # Maximum thread count limit;
+      },
       &quot;workerHealthReportResponse&quot;: { # WorkerHealthReportResponse contains information returned to the worker in response to a health ping. # The service&#x27;s response to a worker&#x27;s health report.
         &quot;reportInterval&quot;: &quot;A String&quot;, # A positive value indicates the worker should change its reporting interval to the specified value. The default value of zero means no change in report rate is requested by the server.
       },
diff --git a/googleapiclient/discovery_cache/documents/dataflow.v1b3.json b/googleapiclient/discovery_cache/documents/dataflow.v1b3.json
index 78e2a7d82c..577dc2f407 100644
--- a/googleapiclient/discovery_cache/documents/dataflow.v1b3.json
+++ b/googleapiclient/discovery_cache/documents/dataflow.v1b3.json
@@ -10,9 +10,6 @@
 },
 "https://www.googleapis.com/auth/compute.readonly": {
 "description": "View your Google Compute Engine resources"
-},
-"https://www.googleapis.com/auth/userinfo.email": {
-"description": "See your primary Google Account email address"
 }
 }
 }
@@ -156,8 +153,7 @@
 "scopes": [
 "https://www.googleapis.com/auth/cloud-platform",
 "https://www.googleapis.com/auth/compute",
-"https://www.googleapis.com/auth/compute.readonly",
-"https://www.googleapis.com/auth/userinfo.email"
+"https://www.googleapis.com/auth/compute.readonly"
 ]
 },
 "workerMessages": {
@@ -186,8 +182,7 @@
 "scopes": [
 "https://www.googleapis.com/auth/cloud-platform",
 "https://www.googleapis.com/auth/compute",
-"https://www.googleapis.com/auth/compute.readonly",
-"https://www.googleapis.com/auth/userinfo.email"
+"https://www.googleapis.com/auth/compute.readonly"
 ]
 }
 },
@@ -273,8 +268,7 @@
 "scopes": [
 "https://www.googleapis.com/auth/cloud-platform",
 "https://www.googleapis.com/auth/compute",
-"https://www.googleapis.com/auth/compute.readonly",
-"https://www.googleapis.com/auth/userinfo.email"
+"https://www.googleapis.com/auth/compute.readonly"
 ]
 },
 "create": {
@@ -330,8 +324,7 @@
 "scopes": [
 "https://www.googleapis.com/auth/cloud-platform",
 "https://www.googleapis.com/auth/compute",
-"https://www.googleapis.com/auth/compute.readonly",
-"https://www.googleapis.com/auth/userinfo.email"
+"https://www.googleapis.com/auth/compute.readonly"
 ]
 },
 "get": {
@@ -386,8 +379,7 @@
 "scopes": [
 "https://www.googleapis.com/auth/cloud-platform",
 "https://www.googleapis.com/auth/compute",
-"https://www.googleapis.com/auth/compute.readonly",
-"https://www.googleapis.com/auth/userinfo.email"
+"https://www.googleapis.com/auth/compute.readonly"
 ]
 },
 "getMetrics": {
@@ -431,8 +423,7 @@
 "scopes": [
 "https://www.googleapis.com/auth/cloud-platform",
 "https://www.googleapis.com/auth/compute",
-"https://www.googleapis.com/auth/compute.readonly",
-"https://www.googleapis.com/auth/userinfo.email"
+"https://www.googleapis.com/auth/compute.readonly"
 ]
 },
 "list": {
@@ -514,8 +505,7 @@
 "scopes": [
 "https://www.googleapis.com/auth/cloud-platform",
 "https://www.googleapis.com/auth/compute",
-"https://www.googleapis.com/auth/compute.readonly",
-"https://www.googleapis.com/auth/userinfo.email"
+"https://www.googleapis.com/auth/compute.readonly"
 ]
 },
 "snapshot": {
@@ -551,8 +541,7 @@
 "scopes": [
 "https://www.googleapis.com/auth/cloud-platform",
 "https://www.googleapis.com/auth/compute",
-"https://www.googleapis.com/auth/compute.readonly",
-"https://www.googleapis.com/auth/userinfo.email"
+"https://www.googleapis.com/auth/compute.readonly"
 ]
 },
 "update": {
@@ -599,8 +588,7 @@
 "scopes": [
 "https://www.googleapis.com/auth/cloud-platform",
 "https://www.googleapis.com/auth/compute",
-"https://www.googleapis.com/auth/compute.readonly",
-"https://www.googleapis.com/auth/userinfo.email"
+"https://www.googleapis.com/auth/compute.readonly"
 ]
 }
 },
@@ -640,8 +628,7 @@
 "scopes": [
 "https://www.googleapis.com/auth/cloud-platform",
 "https://www.googleapis.com/auth/compute",
-"https://www.googleapis.com/auth/compute.readonly",
-"https://www.googleapis.com/auth/userinfo.email"
+"https://www.googleapis.com/auth/compute.readonly"
 ]
 },
 "sendCapture": {
@@ -677,8 +664,7 @@
 "scopes": [
 "https://www.googleapis.com/auth/cloud-platform",
 "https://www.googleapis.com/auth/compute",
-"https://www.googleapis.com/auth/compute.readonly",
-"https://www.googleapis.com/auth/userinfo.email"
+"https://www.googleapis.com/auth/compute.readonly"
 ]
 }
 }
@@ -764,8 +750,7 @@
 "scopes": [
 "https://www.googleapis.com/auth/cloud-platform",
 "https://www.googleapis.com/auth/compute",
-"https://www.googleapis.com/auth/compute.readonly",
-"https://www.googleapis.com/auth/userinfo.email"
+"https://www.googleapis.com/auth/compute.readonly"
 ]
 }
 }
@@ -805,8 +790,7 @@
 "scopes": [
 "https://www.googleapis.com/auth/cloud-platform",
 "https://www.googleapis.com/auth/compute",
-"https://www.googleapis.com/auth/compute.readonly",
-"https://www.googleapis.com/auth/userinfo.email"
+"https://www.googleapis.com/auth/compute.readonly"
 ]
 },
 "reportStatus": {
@@ -842,8 +826,7 @@
 "scopes": [
 "https://www.googleapis.com/auth/cloud-platform",
 "https://www.googleapis.com/auth/compute",
-"https://www.googleapis.com/auth/compute.readonly",
-"https://www.googleapis.com/auth/userinfo.email"
+"https://www.googleapis.com/auth/compute.readonly"
 ]
 }
 }
@@ -885,8 +868,7 @@
 "scopes": [
 "https://www.googleapis.com/auth/cloud-platform",
 "https://www.googleapis.com/auth/compute",
-"https://www.googleapis.com/auth/compute.readonly",
-"https://www.googleapis.com/auth/userinfo.email"
+"https://www.googleapis.com/auth/compute.readonly"
 ]
 }
 },
@@ -926,8 +908,7 @@
 "scopes": [
 "https://www.googleapis.com/auth/cloud-platform",
 "https://www.googleapis.com/auth/compute",
-"https://www.googleapis.com/auth/compute.readonly",
-"https://www.googleapis.com/auth/userinfo.email"
+"https://www.googleapis.com/auth/compute.readonly"
 ]
 }
 }
@@ -989,8 +970,7 @@
 "scopes": [
 "https://www.googleapis.com/auth/cloud-platform",
 "https://www.googleapis.com/auth/compute",
-"https://www.googleapis.com/auth/compute.readonly",
-"https://www.googleapis.com/auth/userinfo.email"
+"https://www.googleapis.com/auth/compute.readonly"
 ]
 },
 "get": {
@@ -1047,8 +1027,7 @@
 "scopes": [
 "https://www.googleapis.com/auth/cloud-platform",
 "https://www.googleapis.com/auth/compute",
-"https://www.googleapis.com/auth/compute.readonly",
-"https://www.googleapis.com/auth/userinfo.email"
+"https://www.googleapis.com/auth/compute.readonly"
 ]
 },
 "getExecutionDetails": {
@@ -1099,8 +1078,7 @@
 "scopes": [
 "https://www.googleapis.com/auth/cloud-platform",
 "https://www.googleapis.com/auth/compute",
-"https://www.googleapis.com/auth/compute.readonly",
-"https://www.googleapis.com/auth/userinfo.email"
+"https://www.googleapis.com/auth/compute.readonly"
 ]
 },
 "getMetrics": {
@@ -1146,8 +1124,7 @@
 "scopes": [
 "https://www.googleapis.com/auth/cloud-platform",
 "https://www.googleapis.com/auth/compute",
-"https://www.googleapis.com/auth/compute.readonly",
-"https://www.googleapis.com/auth/userinfo.email"
+"https://www.googleapis.com/auth/compute.readonly"
 ]
 },
 "list": {
@@ -1231,8 +1208,7 @@
 "scopes": [
 "https://www.googleapis.com/auth/cloud-platform",
 "https://www.googleapis.com/auth/compute",
-"https://www.googleapis.com/auth/compute.readonly",
-"https://www.googleapis.com/auth/userinfo.email"
+"https://www.googleapis.com/auth/compute.readonly"
 ]
 },
 "snapshot": {
@@ -1275,8 +1251,7 @@
 "scopes": [
 "https://www.googleapis.com/auth/cloud-platform",
 "https://www.googleapis.com/auth/compute",
-"https://www.googleapis.com/auth/compute.readonly",
-"https://www.googleapis.com/auth/userinfo.email"
+"https://www.googleapis.com/auth/compute.readonly"
 ]
 },
 "update": {
@@ -1325,8 +1300,7 @@
 "scopes": [
 "https://www.googleapis.com/auth/cloud-platform",
 "https://www.googleapis.com/auth/compute",
-"https://www.googleapis.com/auth/compute.readonly",
-"https://www.googleapis.com/auth/userinfo.email"
+"https://www.googleapis.com/auth/compute.readonly"
 ]
 }
 },
@@ -1373,8 +1347,7 @@
 "scopes": [
 "https://www.googleapis.com/auth/cloud-platform",
 "https://www.googleapis.com/auth/compute",
-"https://www.googleapis.com/auth/compute.readonly",
-"https://www.googleapis.com/auth/userinfo.email"
+"https://www.googleapis.com/auth/compute.readonly"
 ]
 },
 "sendCapture": {
@@ -1417,8 +1390,7 @@
 "scopes": [
 "https://www.googleapis.com/auth/cloud-platform",
 "https://www.googleapis.com/auth/compute",
-"https://www.googleapis.com/auth/compute.readonly",
-"https://www.googleapis.com/auth/userinfo.email"
+"https://www.googleapis.com/auth/compute.readonly"
 ]
 }
 }
@@ -1506,8 +1478,7 @@
 "scopes": [
 "https://www.googleapis.com/auth/cloud-platform",
 "https://www.googleapis.com/auth/compute",
-"https://www.googleapis.com/auth/compute.readonly",
-"https://www.googleapis.com/auth/userinfo.email"
+"https://www.googleapis.com/auth/compute.readonly"
 ]
 }
 }
@@ -1551,8 +1522,7 @@
 "scopes": [
 "https://www.googleapis.com/auth/cloud-platform",
 "https://www.googleapis.com/auth/compute",
-"https://www.googleapis.com/auth/compute.readonly",
-"https://www.googleapis.com/auth/userinfo.email"
+"https://www.googleapis.com/auth/compute.readonly"
 ]
 }
 }
@@ -1626,8 +1596,7 @@
 "scopes": [
 "https://www.googleapis.com/auth/cloud-platform",
 "https://www.googleapis.com/auth/compute",
-"https://www.googleapis.com/auth/compute.readonly",
-"https://www.googleapis.com/auth/userinfo.email"
+"https://www.googleapis.com/auth/compute.readonly"
 ]
 }
 }
@@ -1674,8 +1643,7 @@
 "scopes": [
 "https://www.googleapis.com/auth/cloud-platform",
 "https://www.googleapis.com/auth/compute",
-"https://www.googleapis.com/auth/compute.readonly",
-"https://www.googleapis.com/auth/userinfo.email"
+"https://www.googleapis.com/auth/compute.readonly"
 ]
 },
 "reportStatus": {
@@ -1718,8 +1686,7 @@
 "scopes": [
 "https://www.googleapis.com/auth/cloud-platform",
 "https://www.googleapis.com/auth/compute",
-"https://www.googleapis.com/auth/compute.readonly",
-"https://www.googleapis.com/auth/userinfo.email"
+"https://www.googleapis.com/auth/compute.readonly"
 ]
 }
 }
@@ -1765,8 +1732,7 @@
 "scopes": [
 "https://www.googleapis.com/auth/cloud-platform",
 "https://www.googleapis.com/auth/compute",
-"https://www.googleapis.com/auth/compute.readonly",
-"https://www.googleapis.com/auth/userinfo.email"
+"https://www.googleapis.com/auth/compute.readonly"
 ]
 },
 "get": {
@@ -1806,8 +1772,7 @@
 "scopes": [
 "https://www.googleapis.com/auth/cloud-platform",
 "https://www.googleapis.com/auth/compute",
-"https://www.googleapis.com/auth/compute.readonly",
-"https://www.googleapis.com/auth/userinfo.email"
+"https://www.googleapis.com/auth/compute.readonly"
 ]
 },
 "list": {
@@ -1845,8 +1810,7 @@
 "scopes": [
 "https://www.googleapis.com/auth/cloud-platform",
 "https://www.googleapis.com/auth/compute",
-"https://www.googleapis.com/auth/compute.readonly",
-"https://www.googleapis.com/auth/userinfo.email"
+"https://www.googleapis.com/auth/compute.readonly"
 ]
 }
 }
@@ -1886,8 +1850,7 @@
 "scopes": [
 "https://www.googleapis.com/auth/cloud-platform",
 "https://www.googleapis.com/auth/compute",
-"https://www.googleapis.com/auth/compute.readonly",
-"https://www.googleapis.com/auth/userinfo.email"
+"https://www.googleapis.com/auth/compute.readonly"
 ]
 },
 "get": {
@@ -1936,8 +1899,7 @@
 "scopes": [
 "https://www.googleapis.com/auth/cloud-platform",
 "https://www.googleapis.com/auth/compute",
-"https://www.googleapis.com/auth/compute.readonly",
-"https://www.googleapis.com/auth/userinfo.email"
+"https://www.googleapis.com/auth/compute.readonly"
 ]
 },
 "launch": {
@@ -1993,8 +1955,7 @@
 "scopes": [
 "https://www.googleapis.com/auth/cloud-platform",
 "https://www.googleapis.com/auth/compute",
-"https://www.googleapis.com/auth/compute.readonly",
-"https://www.googleapis.com/auth/userinfo.email"
+"https://www.googleapis.com/auth/compute.readonly"
 ]
 }
 }
@@ -2038,8 +1999,7 @@
 "scopes": [
 "https://www.googleapis.com/auth/cloud-platform",
 "https://www.googleapis.com/auth/compute",
-"https://www.googleapis.com/auth/compute.readonly",
-"https://www.googleapis.com/auth/userinfo.email"
+"https://www.googleapis.com/auth/compute.readonly"
 ]
 },
 "list": {
@@ -2075,8 +2035,7 @@
 "scopes": [
 "https://www.googleapis.com/auth/cloud-platform",
 "https://www.googleapis.com/auth/compute",
-"https://www.googleapis.com/auth/compute.readonly",
-"https://www.googleapis.com/auth/userinfo.email"
+"https://www.googleapis.com/auth/compute.readonly"
 ]
 }
 }
@@ -2109,8 +2068,7 @@
 "scopes": [
 "https://www.googleapis.com/auth/cloud-platform",
 "https://www.googleapis.com/auth/compute",
-"https://www.googleapis.com/auth/compute.readonly",
-"https://www.googleapis.com/auth/userinfo.email"
+"https://www.googleapis.com/auth/compute.readonly"
 ]
 },
 "get": {
@@ -2157,8 +2115,7 @@
 "scopes": [
 "https://www.googleapis.com/auth/cloud-platform",
 "https://www.googleapis.com/auth/compute",
-"https://www.googleapis.com/auth/compute.readonly",
-"https://www.googleapis.com/auth/userinfo.email"
+"https://www.googleapis.com/auth/compute.readonly"
 ]
 },
 "launch": {
@@ -2212,8 +2169,7 @@
 "scopes": [
 "https://www.googleapis.com/auth/cloud-platform",
 "https://www.googleapis.com/auth/compute",
-"https://www.googleapis.com/auth/compute.readonly",
-"https://www.googleapis.com/auth/userinfo.email"
+"https://www.googleapis.com/auth/compute.readonly"
 ]
 }
 }
@@ -2221,7 +2177,7 @@
 }
 }
 },
-"revision": "20240207",
+"revision": "20240218",
 "rootUrl": "https://dataflow.googleapis.com/",
 "schemas": {
 "ApproximateProgress": {
@@ -3459,7 +3415,7 @@
 "type": "object"
 },
 "FlexTemplateRuntimeEnvironment": {
-"description": "The environment values to be set at runtime for flex template.",
+"description": "The environment values to be set at runtime for flex template. LINT.IfChange",
 "id": "FlexTemplateRuntimeEnvironment",
 "properties": {
 "additionalExperiments": {
@@ -6773,6 +6729,18 @@
 },
 "type": "object"
 },
+"StreamingScalingReportResponse": {
+"description": "Contains per-user-worker streaming scaling recommendation from the backend.",
+"id": "StreamingScalingReportResponse",
+"properties": {
+"maximumThreadCount": {
+"description": "Maximum thread count limit;",
+"format": "int32",
+"type": "integer"
+}
+},
+"type": "object"
+},
 "StreamingSetupTask": {
 "description": "A task which initializes part of a streaming Dataflow job.",
 "id": "StreamingSetupTask",
@@ -7581,6 +7549,10 @@
 "description": "A worker_message response allows the server to pass information to the sender.",
 "id": "WorkerMessageResponse",
 "properties": {
+"streamingScalingReportResponse": {
+"$ref": "StreamingScalingReportResponse",
+"description": "Service's streaming scaling response for workers."
+},
 "workerHealthReportResponse": {
 "$ref": "WorkerHealthReportResponse",
 "description": "The service's response to a worker's health report."