diff --git a/googleapis/analytics/data/v1alpha/analytics_data_api.pb.go b/googleapis/analytics/data/v1alpha/analytics_data_api.pb.go
index a23ae7717..fa87d03b1 100644
--- a/googleapis/analytics/data/v1alpha/analytics_data_api.pb.go
+++ b/googleapis/analytics/data/v1alpha/analytics_data_api.pb.go
@@ -1045,7 +1045,7 @@ type GetMetadataRequest struct {
 
 	// Required. The resource name of the metadata to retrieve. This name field is
 	// specified in the URL path and not URL parameters. Property is a numeric
-	// Google Analytics App + Web Property identifier.
+	// Google Analytics 4 (GA4) Property identifier.
 	//
 	// Example: properties/1234/metadata
 	Name string `protobuf:"bytes,1,opt,name=name,proto3" json:"name,omitempty"`
@@ -1759,7 +1759,7 @@ type AlphaAnalyticsDataClient interface {
 	GetUniversalMetadata(ctx context.Context, in *GetUniversalMetadataRequest, opts ...grpc.CallOption) (*UniversalMetadata, error)
 	// Returns metadata for dimensions and metrics available in reporting methods.
 	// Used to explore the dimensions and metrics. In this method, a Google
-	// Analytics App + Web Property Identifier is specified in the request, and
+	// Analytics 4 (GA4) Property Identifier is specified in the request, and
 	// the metadata response includes Custom dimensions and metrics as well as
 	// Universal metadata.
 	//
@@ -1863,7 +1863,7 @@ type AlphaAnalyticsDataServer interface {
 	GetUniversalMetadata(context.Context, *GetUniversalMetadataRequest) (*UniversalMetadata, error)
 	// Returns metadata for dimensions and metrics available in reporting methods.
 	// Used to explore the dimensions and metrics. In this method, a Google
-	// Analytics App + Web Property Identifier is specified in the request, and
+	// Analytics 4 (GA4) Property Identifier is specified in the request, and
 	// the metadata response includes Custom dimensions and metrics as well as
 	// Universal metadata.
 	//
diff --git a/googleapis/analytics/data/v1alpha/data.pb.go b/googleapis/analytics/data/v1alpha/data.pb.go
index 862001eb4..416dd2321 100644
--- a/googleapis/analytics/data/v1alpha/data.pb.go
+++ b/googleapis/analytics/data/v1alpha/data.pb.go
@@ -531,7 +531,7 @@ type Entity struct {
 	sizeCache     protoimpl.SizeCache
 	unknownFields protoimpl.UnknownFields
 
-	// A Google Analytics App + Web property id.
+	// A Google Analytics 4 (GA4) property id.
 	PropertyId string `protobuf:"bytes,1,opt,name=property_id,json=propertyId,proto3" json:"property_id,omitempty"`
 }
 
diff --git a/regen.txt b/regen.txt
index 864c04cc5..9e6b88853 100644
--- a/regen.txt
+++ b/regen.txt
@@ -1 +1 @@
-7f31f40209008ad24058579e7112e45fc9d5715e
\ No newline at end of file
+da21c5639535f27aa9b43360000bec0b01cecde8
\ No newline at end of file