Index: src/wp-admin/includes/class-wp-community-events.php
===================================================================
--- src/wp-admin/includes/class-wp-community-events.php	(revision 40785)
+++ src/wp-admin/includes/class-wp-community-events.php	(working copy)
@@ -94,12 +94,13 @@
 			return $cached_events;
 		}
 
-		$request_url    = $this->get_request_url( $location_search, $timezone );
-		$response       = wp_remote_get( $request_url );
+		$api_url        = 'https://api.wordpress.org/events/1.0/';
+		$request_args   = $this->get_request_args( $location_search, $timezone );
+		$response       = wp_remote_get( $api_url, $request_args );
 		$response_code  = wp_remote_retrieve_response_code( $response );
 		$response_body  = json_decode( wp_remote_retrieve_body( $response ), true );
 		$response_error = null;
-		$debugging_info = compact( 'request_url', 'response_code', 'response_body' );
+		$debugging_info = compact( 'api_url', 'request_args', 'response_code', 'response_body' );
 
 		if ( is_wp_error( $response ) ) {
 			$response_error = $response;
@@ -143,7 +144,7 @@
 	}
 
 	/**
-	 * Builds a URL for requests to the w.org Events API.
+	 * Builds an array of args to use in an http request to the w.org Events API.
 	 *
 	 * @access protected
 	 * @since 4.8.0
@@ -150,17 +151,16 @@
 	 *
 	 * @param  string $search   Optional. City search string. Default empty string.
 	 * @param  string $timezone Optional. Timezone string. Default empty string.
-	 * @return string The request URL.
+	 * @return array The request args.
 	 */
-	protected function get_request_url( $search = '', $timezone = '' ) {
-		$api_url = 'https://api.wordpress.org/events/1.0/';
-		$args    = array(
+	protected function get_request_args( $search = '', $timezone = '' ) {
+		$args = array(
 			'number' => 5, // Get more than three in case some get trimmed out.
 			'ip'     => $this->get_client_ip(),
 		);
 
 		/*
-		 * Send the minimal set of necessary arguments, in order to increase the
+		 * Include the minimal set of necessary arguments, in order to increase the
 		 * chances of a cache-hit on the API side.
 		 */
 		if ( empty( $search ) && isset( $this->user_location['latitude'], $this->user_location['longitude'] ) ) {
@@ -178,7 +178,10 @@
 			}
 		}
 
-		return add_query_arg( $args, $api_url );
+		// Wrap the args in an array compatible with the second parameter of `wp_remote_get()`.
+		return array(
+			'body' => $args
+		);
 	}
 
 	/**