diff --git a/module/CLI/src/Command/Tag/ListTagsCommand.php b/module/CLI/src/Command/Tag/ListTagsCommand.php
index 442706fd..201b09ae 100644
--- a/module/CLI/src/Command/Tag/ListTagsCommand.php
+++ b/module/CLI/src/Command/Tag/ListTagsCommand.php
@@ -1,6 +1,4 @@
 <?php
-declare(strict_types=1);
-
 namespace Shlinkio\Shlink\CLI\Command\Tag;
 
 use Acelaya\ZsmAnnotatedServices\Annotation as DI;
diff --git a/module/Core/src/Repository/TagRepository.php b/module/Core/src/Repository/TagRepository.php
index a4254cad..46967f92 100644
--- a/module/Core/src/Repository/TagRepository.php
+++ b/module/Core/src/Repository/TagRepository.php
@@ -1,6 +1,4 @@
 <?php
-declare(strict_types=1);
-
 namespace Shlinkio\Shlink\Core\Repository;
 
 use Doctrine\ORM\EntityRepository;
diff --git a/module/Core/src/Repository/TagRepositoryInterface.php b/module/Core/src/Repository/TagRepositoryInterface.php
index 23eb8128..f3e604a5 100644
--- a/module/Core/src/Repository/TagRepositoryInterface.php
+++ b/module/Core/src/Repository/TagRepositoryInterface.php
@@ -1,6 +1,4 @@
 <?php
-declare(strict_types=1);
-
 namespace Shlinkio\Shlink\Core\Repository;
 
 use Doctrine\Common\Persistence\ObjectRepository;
diff --git a/module/Rest/src/Action/Tag/CreateTagsAction.php b/module/Rest/src/Action/Tag/CreateTagsAction.php
index b5496f75..5496513d 100644
--- a/module/Rest/src/Action/Tag/CreateTagsAction.php
+++ b/module/Rest/src/Action/Tag/CreateTagsAction.php
@@ -1,6 +1,4 @@
 <?php
-declare(strict_types=1);
-
 namespace Shlinkio\Shlink\Rest\Action\Tag;
 
 use Acelaya\ZsmAnnotatedServices\Annotation as DI;
diff --git a/module/Rest/src/Action/Tag/DeleteTagsAction.php b/module/Rest/src/Action/Tag/DeleteTagsAction.php
index f579e9b8..fe41bdce 100644
--- a/module/Rest/src/Action/Tag/DeleteTagsAction.php
+++ b/module/Rest/src/Action/Tag/DeleteTagsAction.php
@@ -1,6 +1,4 @@
 <?php
-declare(strict_types=1);
-
 namespace Shlinkio\Shlink\Rest\Action\Tag;
 
 use Acelaya\ZsmAnnotatedServices\Annotation as DI;
diff --git a/module/Rest/test/Action/Tag/CreateTagsActionTest.php b/module/Rest/test/Action/Tag/CreateTagsActionTest.php
index 795827fa..22592e68 100644
--- a/module/Rest/test/Action/Tag/CreateTagsActionTest.php
+++ b/module/Rest/test/Action/Tag/CreateTagsActionTest.php
@@ -1,6 +1,4 @@
 <?php
-declare(strict_types=1);
-
 namespace ShlinkioTest\Shlink\Rest\Action\Tag;
 
 use Doctrine\Common\Collections\ArrayCollection;
diff --git a/module/Rest/test/Action/Tag/DeleteTagsActionTest.php b/module/Rest/test/Action/Tag/DeleteTagsActionTest.php
index 0a0657bf..26c92484 100644
--- a/module/Rest/test/Action/Tag/DeleteTagsActionTest.php
+++ b/module/Rest/test/Action/Tag/DeleteTagsActionTest.php
@@ -1,6 +1,4 @@
 <?php
-declare(strict_types=1);
-
 namespace ShlinkioTest\Shlink\Rest\Action\Tag;
 
 use Interop\Http\ServerMiddleware\DelegateInterface;