diff --git a/CHANGELOG b/CHANGELOG
index 7aac018..f5618ba 100644
--- a/CHANGELOG
+++ b/CHANGELOG
@@ -1,3 +1,9 @@
+Version 0.8.3 (2020-??-??)
+==========================
+
+Changes:
+- Officially require PHP 7.1 (effectively required since version 0.8.0)
+
 Version 0.8.2 (2019-12-07)
 ==========================
 
diff --git a/arsse.php b/arsse.php
index 0cfa0ae..1fe1870 100644
--- a/arsse.php
+++ b/arsse.php
@@ -25,7 +25,7 @@ if (\PHP_SAPI === "cli") {
     $conf = file_exists(BASE."config.php") ? new Conf(BASE."config.php") : new Conf;
     Arsse::load($conf);
     // handle Web requests
-    $emitter = new \Zend\HttpHandlerRunner\Emitter\SapiEmitter;
+    $emitter = new \Laminas\HttpHandlerRunner\Emitter\SapiEmitter;
     $response = (new REST)->dispatch();
     $emitter->emit($response);
 }
diff --git a/lib/REST.php b/lib/REST.php
index 07389ba..b375f3c 100644
--- a/lib/REST.php
+++ b/lib/REST.php
@@ -11,8 +11,8 @@ use JKingWeb\Arsse\Misc\URL;
 use Psr\Http\Message\RequestInterface;
 use Psr\Http\Message\ServerRequestInterface;
 use Psr\Http\Message\ResponseInterface;
-use Zend\Diactoros\ServerRequestFactory;
-use Zend\Diactoros\Response\EmptyResponse;
+use Laminas\Diactoros\ServerRequestFactory;
+use Laminas\Diactoros\Response\EmptyResponse;
 
 class REST {
     const API_LIST = [
diff --git a/lib/REST/Fever/API.php b/lib/REST/Fever/API.php
index 1569c92..2156598 100644
--- a/lib/REST/Fever/API.php
+++ b/lib/REST/Fever/API.php
@@ -14,9 +14,9 @@ use JKingWeb\Arsse\Db\ExceptionInput;
 use JKingWeb\Arsse\Misc\HTTP;
 use Psr\Http\Message\ServerRequestInterface;
 use Psr\Http\Message\ResponseInterface;
-use Zend\Diactoros\Response\JsonResponse;
-use Zend\Diactoros\Response\XmlResponse;
-use Zend\Diactoros\Response\EmptyResponse;
+use Laminas\Diactoros\Response\JsonResponse;
+use Laminas\Diactoros\Response\XmlResponse;
+use Laminas\Diactoros\Response\EmptyResponse;
 
 class API extends \JKingWeb\Arsse\REST\AbstractHandler {
     const LEVEL = 3;
diff --git a/lib/REST/NextcloudNews/V1_2.php b/lib/REST/NextcloudNews/V1_2.php
index f0d2177..90e7009 100644
--- a/lib/REST/NextcloudNews/V1_2.php
+++ b/lib/REST/NextcloudNews/V1_2.php
@@ -19,8 +19,8 @@ use JKingWeb\Arsse\REST\Exception404;
 use JKingWeb\Arsse\REST\Exception405;
 use Psr\Http\Message\ServerRequestInterface;
 use Psr\Http\Message\ResponseInterface;
-use Zend\Diactoros\Response\JsonResponse as Response;
-use Zend\Diactoros\Response\EmptyResponse;
+use Laminas\Diactoros\Response\JsonResponse as Response;
+use Laminas\Diactoros\Response\EmptyResponse;
 
 class V1_2 extends \JKingWeb\Arsse\REST\AbstractHandler {
     const REALM = "Nextcloud News API v1-2";
diff --git a/lib/REST/NextcloudNews/Versions.php b/lib/REST/NextcloudNews/Versions.php
index 78d4ac7..a8db7a7 100644
--- a/lib/REST/NextcloudNews/Versions.php
+++ b/lib/REST/NextcloudNews/Versions.php
@@ -8,8 +8,8 @@ namespace JKingWeb\Arsse\REST\NextcloudNews;
 
 use Psr\Http\Message\ServerRequestInterface;
 use Psr\Http\Message\ResponseInterface;
-use Zend\Diactoros\Response\JsonResponse as Response;
-use Zend\Diactoros\Response\EmptyResponse;
+use Laminas\Diactoros\Response\JsonResponse as Response;
+use Laminas\Diactoros\Response\EmptyResponse;
 
 class Versions implements \JKingWeb\Arsse\REST\Handler {
     public function __construct() {
diff --git a/lib/REST/TinyTinyRSS/API.php b/lib/REST/TinyTinyRSS/API.php
index 56a2437..4049a2a 100644
--- a/lib/REST/TinyTinyRSS/API.php
+++ b/lib/REST/TinyTinyRSS/API.php
@@ -20,8 +20,8 @@ use JKingWeb\Arsse\Db\ResultEmpty;
 use JKingWeb\Arsse\Feed\Exception as FeedException;
 use Psr\Http\Message\ServerRequestInterface;
 use Psr\Http\Message\ResponseInterface;
-use Zend\Diactoros\Response\JsonResponse as Response;
-use Zend\Diactoros\Response\EmptyResponse;
+use Laminas\Diactoros\Response\JsonResponse as Response;
+use Laminas\Diactoros\Response\EmptyResponse;
 
 class API extends \JKingWeb\Arsse\REST\AbstractHandler {
     const LEVEL = 14;           // emulated API level
diff --git a/lib/REST/TinyTinyRSS/Icon.php b/lib/REST/TinyTinyRSS/Icon.php
index 0415bf2..c5c9030 100644
--- a/lib/REST/TinyTinyRSS/Icon.php
+++ b/lib/REST/TinyTinyRSS/Icon.php
@@ -9,7 +9,7 @@ namespace JKingWeb\Arsse\REST\TinyTinyRSS;
 use JKingWeb\Arsse\Arsse;
 use Psr\Http\Message\ServerRequestInterface;
 use Psr\Http\Message\ResponseInterface;
-use Zend\Diactoros\Response\EmptyResponse as Response;
+use Laminas\Diactoros\Response\EmptyResponse as Response;
 
 class Icon extends \JKingWeb\Arsse\REST\AbstractHandler {
     public function __construct() {
diff --git a/tests/cases/Misc/TestHTTP.php b/tests/cases/Misc/TestHTTP.php
index 70d1316..8430dda 100644
--- a/tests/cases/Misc/TestHTTP.php
+++ b/tests/cases/Misc/TestHTTP.php
@@ -13,9 +13,9 @@ use Psr\Http\Message\ResponseInterface;
 class TestHTTP extends \JKingWeb\Arsse\Test\AbstractTest {
     /** @dataProvider provideMediaTypes */
     public function testMatchMediaType(string $header, array $types, bool $exp) {
-        $msg = (new \Zend\Diactoros\Request)->withHeader("Content-Type", $header);
+        $msg = (new \Laminas\Diactoros\Request)->withHeader("Content-Type", $header);
         $this->assertSame($exp, HTTP::matchType($msg, ...$types));
-        $msg = (new \Zend\Diactoros\Response)->withHeader("Content-Type", $header);
+        $msg = (new \Laminas\Diactoros\Response)->withHeader("Content-Type", $header);
         $this->assertSame($exp, HTTP::matchType($msg, ...$types));
     }
 
diff --git a/tests/cases/REST/Fever/TestAPI.php b/tests/cases/REST/Fever/TestAPI.php
index ad54243..f7cd3c5 100644
--- a/tests/cases/REST/Fever/TestAPI.php
+++ b/tests/cases/REST/Fever/TestAPI.php
@@ -15,10 +15,10 @@ use JKingWeb\Arsse\Db\ExceptionInput;
 use JKingWeb\Arsse\Db\Transaction;
 use JKingWeb\Arsse\REST\Fever\API;
 use Psr\Http\Message\ResponseInterface;
-use Zend\Diactoros\ServerRequest;
-use Zend\Diactoros\Response\JsonResponse;
-use Zend\Diactoros\Response\XmlResponse;
-use Zend\Diactoros\Response\EmptyResponse;
+use Laminas\Diactoros\ServerRequest;
+use Laminas\Diactoros\Response\JsonResponse;
+use Laminas\Diactoros\Response\XmlResponse;
+use Laminas\Diactoros\Response\EmptyResponse;
 
 /** @covers \JKingWeb\Arsse\REST\Fever\API<extended> */
 class TestAPI extends \JKingWeb\Arsse\Test\AbstractTest {
diff --git a/tests/cases/REST/NextcloudNews/TestV1_2.php b/tests/cases/REST/NextcloudNews/TestV1_2.php
index af3d9d5..9aa3c8e 100644
--- a/tests/cases/REST/NextcloudNews/TestV1_2.php
+++ b/tests/cases/REST/NextcloudNews/TestV1_2.php
@@ -16,8 +16,8 @@ use JKingWeb\Arsse\Db\ExceptionInput;
 use JKingWeb\Arsse\Db\Transaction;
 use JKingWeb\Arsse\REST\NextcloudNews\V1_2;
 use Psr\Http\Message\ResponseInterface;
-use Zend\Diactoros\Response\JsonResponse as Response;
-use Zend\Diactoros\Response\EmptyResponse;
+use Laminas\Diactoros\Response\JsonResponse as Response;
+use Laminas\Diactoros\Response\EmptyResponse;
 
 /** @covers \JKingWeb\Arsse\REST\NextcloudNews\V1_2<extended> */
 class TestV1_2 extends \JKingWeb\Arsse\Test\AbstractTest {
diff --git a/tests/cases/REST/NextcloudNews/TestVersions.php b/tests/cases/REST/NextcloudNews/TestVersions.php
index 2fc40b8..7c65ddb 100644
--- a/tests/cases/REST/NextcloudNews/TestVersions.php
+++ b/tests/cases/REST/NextcloudNews/TestVersions.php
@@ -8,9 +8,9 @@ namespace JKingWeb\Arsse\TestCase\REST\NextcloudNews;
 
 use JKingWeb\Arsse\REST\NextcloudNews\Versions;
 use Psr\Http\Message\ResponseInterface;
-use Zend\Diactoros\ServerRequest;
-use Zend\Diactoros\Response\JsonResponse as Response;
-use Zend\Diactoros\Response\EmptyResponse;
+use Laminas\Diactoros\ServerRequest;
+use Laminas\Diactoros\Response\JsonResponse as Response;
+use Laminas\Diactoros\Response\EmptyResponse;
 
 /** @covers \JKingWeb\Arsse\REST\NextcloudNews\Versions */
 class TestVersions extends \JKingWeb\Arsse\Test\AbstractTest {
diff --git a/tests/cases/REST/TestREST.php b/tests/cases/REST/TestREST.php
index 36c1753..249e80c 100644
--- a/tests/cases/REST/TestREST.php
+++ b/tests/cases/REST/TestREST.php
@@ -15,11 +15,11 @@ use JKingWeb\Arsse\REST\NextcloudNews\V1_2 as NCN;
 use JKingWeb\Arsse\REST\TinyTinyRSS\API as TTRSS;
 use Psr\Http\Message\RequestInterface;
 use Psr\Http\Message\ResponseInterface;
-use Zend\Diactoros\Request;
-use Zend\Diactoros\Response;
-use Zend\Diactoros\ServerRequest;
-use Zend\Diactoros\Response\TextResponse;
-use Zend\Diactoros\Response\EmptyResponse;
+use Laminas\Diactoros\Request;
+use Laminas\Diactoros\Response;
+use Laminas\Diactoros\ServerRequest;
+use Laminas\Diactoros\Response\TextResponse;
+use Laminas\Diactoros\Response\EmptyResponse;
 
 /** @covers \JKingWeb\Arsse\REST */
 class TestREST extends \JKingWeb\Arsse\Test\AbstractTest {
diff --git a/tests/cases/REST/TinyTinyRSS/TestAPI.php b/tests/cases/REST/TinyTinyRSS/TestAPI.php
index d3a275a..f25c4cc 100644
--- a/tests/cases/REST/TinyTinyRSS/TestAPI.php
+++ b/tests/cases/REST/TinyTinyRSS/TestAPI.php
@@ -16,9 +16,9 @@ use JKingWeb\Arsse\Db\ExceptionInput;
 use JKingWeb\Arsse\Db\Transaction;
 use JKingWeb\Arsse\REST\TinyTinyRSS\API;
 use Psr\Http\Message\ResponseInterface;
-use Zend\Diactoros\ServerRequest;
-use Zend\Diactoros\Response\JsonResponse as Response;
-use Zend\Diactoros\Response\EmptyResponse;
+use Laminas\Diactoros\ServerRequest;
+use Laminas\Diactoros\Response\JsonResponse as Response;
+use Laminas\Diactoros\Response\EmptyResponse;
 
 /** @covers \JKingWeb\Arsse\REST\TinyTinyRSS\API<extended>
  *  @covers \JKingWeb\Arsse\REST\TinyTinyRSS\Exception */
diff --git a/tests/cases/REST/TinyTinyRSS/TestIcon.php b/tests/cases/REST/TinyTinyRSS/TestIcon.php
index d7f5062..fd33094 100644
--- a/tests/cases/REST/TinyTinyRSS/TestIcon.php
+++ b/tests/cases/REST/TinyTinyRSS/TestIcon.php
@@ -11,8 +11,8 @@ use JKingWeb\Arsse\User;
 use JKingWeb\Arsse\Database;
 use JKingWeb\Arsse\REST\TinyTinyRSS\Icon;
 use Psr\Http\Message\ResponseInterface;
-use Zend\Diactoros\ServerRequest;
-use Zend\Diactoros\Response\EmptyResponse as Response;
+use Laminas\Diactoros\ServerRequest;
+use Laminas\Diactoros\Response\EmptyResponse as Response;
 
 /** @covers \JKingWeb\Arsse\REST\TinyTinyRSS\Icon<extended> */
 class TestIcon extends \JKingWeb\Arsse\Test\AbstractTest {
diff --git a/tests/lib/AbstractTest.php b/tests/lib/AbstractTest.php
index 1581b0a..bb0c688 100644
--- a/tests/lib/AbstractTest.php
+++ b/tests/lib/AbstractTest.php
@@ -18,9 +18,9 @@ use Psr\Http\Message\MessageInterface;
 use Psr\Http\Message\RequestInterface;
 use Psr\Http\Message\ServerRequestInterface;
 use Psr\Http\Message\ResponseInterface;
-use Zend\Diactoros\ServerRequest;
-use Zend\Diactoros\Response\JsonResponse;
-use Zend\Diactoros\Response\XmlResponse;
+use Laminas\Diactoros\ServerRequest;
+use Laminas\Diactoros\Response\JsonResponse;
+use Laminas\Diactoros\Response\XmlResponse;
 
 /** @coversNothing */
 abstract class AbstractTest extends \PHPUnit\Framework\TestCase {