diff --git a/google/monitoring/v3/uptime.proto b/google/monitoring/v3/uptime.proto
index 6ef4e0dd..54a9b11e 100644
--- a/google/monitoring/v3/uptime.proto
+++ b/google/monitoring/v3/uptime.proto
@@ -28,27 +28,6 @@ option java_package = "com.google.monitoring.v3";
 option php_namespace = "Google\\Cloud\\Monitoring\\V3";
 option ruby_package = "Google::Cloud::Monitoring::V3";
 
-// The regions from which an Uptime check can be run.
-enum UptimeCheckRegion {
-  // Default value if no region is specified. Will result in Uptime checks
-  // running from all regions.
-  REGION_UNSPECIFIED = 0;
-
-  // Allows checks to run from locations within the United States of America.
-  USA = 1;
-
-  // Allows checks to run from locations within the continent of Europe.
-  EUROPE = 2;
-
-  // Allows checks to run from locations within the continent of South
-  // America.
-  SOUTH_AMERICA = 3;
-
-  // Allows checks to run from locations within the Asia Pacific area (ex:
-  // Singapore).
-  ASIA_PACIFIC = 4;
-}
-
 // An internal checker allows Uptime checks to run on private/internal GCP
 // resources.
 message InternalChecker {
@@ -105,6 +84,27 @@ message InternalChecker {
   State state = 7;
 }
 
+// The regions from which an Uptime check can be run.
+enum UptimeCheckRegion {
+  // Default value if no region is specified. Will result in Uptime checks
+  // running from all regions.
+  REGION_UNSPECIFIED = 0;
+
+  // Allows checks to run from locations within the United States of America.
+  USA = 1;
+
+  // Allows checks to run from locations within the continent of Europe.
+  EUROPE = 2;
+
+  // Allows checks to run from locations within the continent of South
+  // America.
+  SOUTH_AMERICA = 3;
+
+  // Allows checks to run from locations within the Asia Pacific area (ex:
+  // Singapore).
+  ASIA_PACIFIC = 4;
+}
+
 // This message configures which resources and services to monitor for
 // availability.
 message UptimeCheckConfig {
@@ -142,6 +142,34 @@ message UptimeCheckConfig {
       string password = 2;
     }
 
+    // The HTTP request method options.
+    enum RequestMethod {
+      // No request method specified.
+      METHOD_UNSPECIFIED = 0;
+
+      // GET request.
+      GET = 1;
+
+      // POST request.
+      POST = 2;
+    }
+
+    // Header options corresponding to the Content-Type of the body in HTTP
+    // requests. Note that a `Content-Type` header cannot be present in the
+    // `headers` field if this field is specified.
+    enum ContentType {
+      // No content type specified. If the request method is POST, an
+      // unspecified content type results in a check creation rejection.
+      TYPE_UNSPECIFIED = 0;
+
+      // `body` is in URL-encoded form. Equivalent to setting the `Content-Type`
+      // to `application/x-www-form-urlencoded` in the HTTP request.
+      URL_ENCODED = 1;
+    }
+
+    // The HTTP request method to use for the check.
+    RequestMethod request_method = 8;
+
     // If `true`, use HTTPS instead of HTTP to run the check.
     bool use_ssl = 1;
 
@@ -180,11 +208,21 @@ message UptimeCheckConfig {
     // The maximum number of headers allowed is 100.
     map<string, string> headers = 6;
 
+    // The content type to use for the check.
+    ContentType content_type = 9;
+
     // Boolean specifying whether to include SSL certificate validation as a
     // part of the Uptime check. Only applies to checks where
     // `monitored_resource` is set to `uptime_url`. If `use_ssl` is `false`,
     // setting `validate_ssl` to `true` has no effect.
     bool validate_ssl = 7;
+
+    // The request body associated with the HTTP request. If `content_type` is
+    // `URL_ENCODED`, the body passed in must be URL-encoded. Users can provide
+    // a `Content-Length` header via the `headers` field or the API will do
+    // so. The maximum byte size is 1 megabyte. Note: As with all `bytes` fields
+    // JSON representations are base64 encoded.
+    bytes body = 10;
   }
 
   // Information required for a TCP Uptime check request.
@@ -314,23 +352,6 @@ message UptimeCheckConfig {
   repeated InternalChecker internal_checkers = 14 [deprecated = true];
 }
 
-// The supported resource types that can be used as values of
-// `group_resource.resource_type`.
-// `INSTANCE` includes `gce_instance` and `aws_ec2_instance` resource types.
-// The resource types `gae_app` and `uptime_url` are not valid here because
-// group checks on App Engine modules and URLs are not allowed.
-enum GroupResourceType {
-  // Default value (not valid).
-  RESOURCE_TYPE_UNSPECIFIED = 0;
-
-  // A group of instances from Google Cloud Platform (GCP) or
-  // Amazon Web Services (AWS).
-  INSTANCE = 1;
-
-  // A group of Amazon ELB load balancers.
-  AWS_ELB_LOAD_BALANCER = 2;
-}
-
 // Contains the region, location, and list of IP
 // addresses where checkers in the location run from.
 message UptimeCheckIp {
@@ -349,3 +370,20 @@ message UptimeCheckIp {
   // interpreting this field in either IPv4 or IPv6 format.
   string ip_address = 3;
 }
+
+// The supported resource types that can be used as values of
+// `group_resource.resource_type`.
+// `INSTANCE` includes `gce_instance` and `aws_ec2_instance` resource types.
+// The resource types `gae_app` and `uptime_url` are not valid here because
+// group checks on App Engine modules and URLs are not allowed.
+enum GroupResourceType {
+  // Default value (not valid).
+  RESOURCE_TYPE_UNSPECIFIED = 0;
+
+  // A group of instances from Google Cloud Platform (GCP) or
+  // Amazon Web Services (AWS).
+  INSTANCE = 1;
+
+  // A group of Amazon ELB load balancers.
+  AWS_ELB_LOAD_BALANCER = 2;
+}