diff --git a/Puc/v5/PucFactory.php b/Puc/v5/PucFactory.php
index 9ea49a5..3cda059 100644
--- a/Puc/v5/PucFactory.php
+++ b/Puc/v5/PucFactory.php
@@ -4,7 +4,7 @@
 
 if ( !class_exists(PucFactory::class, false) ):
 
-	class PucFactory extends \YahnisElsts\PluginUpdateChecker\v5p0\PucFactory {
+	class PucFactory extends \YahnisElsts\PluginUpdateChecker\v5p1\PucFactory {
 	}
 
 endif;
diff --git a/Puc/v5p0/Autoloader.php b/Puc/v5p1/Autoloader.php
similarity index 98%
rename from Puc/v5p0/Autoloader.php
rename to Puc/v5p1/Autoloader.php
index dfd1ee6..ecdede9 100644
--- a/Puc/v5p0/Autoloader.php
+++ b/Puc/v5p1/Autoloader.php
@@ -1,6 +1,6 @@
 <?php
 
-namespace YahnisElsts\PluginUpdateChecker\v5p0;
+namespace YahnisElsts\PluginUpdateChecker\v5p1;
 
 if ( !class_exists(Autoloader::class, false) ):
 
diff --git a/Puc/v5p0/DebugBar/Extension.php b/Puc/v5p1/DebugBar/Extension.php
similarity index 97%
rename from Puc/v5p0/DebugBar/Extension.php
rename to Puc/v5p1/DebugBar/Extension.php
index b7b27d1..01f4330 100644
--- a/Puc/v5p0/DebugBar/Extension.php
+++ b/Puc/v5p1/DebugBar/Extension.php
@@ -1,8 +1,8 @@
 <?php
-namespace YahnisElsts\PluginUpdateChecker\v5p0\DebugBar;
+namespace YahnisElsts\PluginUpdateChecker\v5p1\DebugBar;
 
-use YahnisElsts\PluginUpdateChecker\v5p0\PucFactory;
-use YahnisElsts\PluginUpdateChecker\v5p0\UpdateChecker;
+use YahnisElsts\PluginUpdateChecker\v5p1\PucFactory;
+use YahnisElsts\PluginUpdateChecker\v5p1\UpdateChecker;
 
 if ( !class_exists(Extension::class, false) ):
 
diff --git a/Puc/v5p0/DebugBar/Panel.php b/Puc/v5p1/DebugBar/Panel.php
similarity index 97%
rename from Puc/v5p0/DebugBar/Panel.php
rename to Puc/v5p1/DebugBar/Panel.php
index c9f6476..b880d65 100644
--- a/Puc/v5p0/DebugBar/Panel.php
+++ b/Puc/v5p1/DebugBar/Panel.php
@@ -1,7 +1,7 @@
 <?php
-namespace YahnisElsts\PluginUpdateChecker\v5p0\DebugBar;
+namespace YahnisElsts\PluginUpdateChecker\v5p1\DebugBar;
 
-use YahnisElsts\PluginUpdateChecker\v5p0\UpdateChecker;
+use YahnisElsts\PluginUpdateChecker\v5p1\UpdateChecker;
 
 if ( !class_exists(Panel::class, false) && class_exists('Debug_Bar_Panel', false) ):
 
diff --git a/Puc/v5p0/DebugBar/PluginExtension.php b/Puc/v5p1/DebugBar/PluginExtension.php
similarity index 90%
rename from Puc/v5p0/DebugBar/PluginExtension.php
rename to Puc/v5p1/DebugBar/PluginExtension.php
index feaf2ff..21fbe0b 100644
--- a/Puc/v5p0/DebugBar/PluginExtension.php
+++ b/Puc/v5p1/DebugBar/PluginExtension.php
@@ -1,8 +1,8 @@
 <?php
 
-namespace YahnisElsts\PluginUpdateChecker\v5p0\DebugBar;
+namespace YahnisElsts\PluginUpdateChecker\v5p1\DebugBar;
 
-use YahnisElsts\PluginUpdateChecker\v5p0\Plugin\UpdateChecker;
+use YahnisElsts\PluginUpdateChecker\v5p1\Plugin\UpdateChecker;
 
 if ( !class_exists(PluginExtension::class, false) ):
 
diff --git a/Puc/v5p0/DebugBar/PluginPanel.php b/Puc/v5p1/DebugBar/PluginPanel.php
similarity index 87%
rename from Puc/v5p0/DebugBar/PluginPanel.php
rename to Puc/v5p1/DebugBar/PluginPanel.php
index 15a24af..d741e81 100644
--- a/Puc/v5p0/DebugBar/PluginPanel.php
+++ b/Puc/v5p1/DebugBar/PluginPanel.php
@@ -1,7 +1,7 @@
 <?php
-namespace YahnisElsts\PluginUpdateChecker\v5p0\DebugBar;
+namespace YahnisElsts\PluginUpdateChecker\v5p1\DebugBar;
 
-use YahnisElsts\PluginUpdateChecker\v5p0\Plugin\UpdateChecker;
+use YahnisElsts\PluginUpdateChecker\v5p1\Plugin\UpdateChecker;
 
 if ( !class_exists(PluginPanel::class, false) ):
 
diff --git a/Puc/v5p0/DebugBar/ThemePanel.php b/Puc/v5p1/DebugBar/ThemePanel.php
similarity index 79%
rename from Puc/v5p0/DebugBar/ThemePanel.php
rename to Puc/v5p1/DebugBar/ThemePanel.php
index 685726f..aab8818 100644
--- a/Puc/v5p0/DebugBar/ThemePanel.php
+++ b/Puc/v5p1/DebugBar/ThemePanel.php
@@ -1,8 +1,8 @@
 <?php
 
-namespace YahnisElsts\PluginUpdateChecker\v5p0\DebugBar;
+namespace YahnisElsts\PluginUpdateChecker\v5p1\DebugBar;
 
-use YahnisElsts\PluginUpdateChecker\v5p0\Theme\UpdateChecker;
+use YahnisElsts\PluginUpdateChecker\v5p1\Theme\UpdateChecker;
 
 if ( !class_exists(ThemePanel::class, false) ):
 
diff --git a/Puc/v5p0/InstalledPackage.php b/Puc/v5p1/InstalledPackage.php
similarity index 98%
rename from Puc/v5p0/InstalledPackage.php
rename to Puc/v5p1/InstalledPackage.php
index 0acfc20..f61db0e 100644
--- a/Puc/v5p0/InstalledPackage.php
+++ b/Puc/v5p1/InstalledPackage.php
@@ -1,5 +1,5 @@
 <?php
-namespace YahnisElsts\PluginUpdateChecker\v5p0;
+namespace YahnisElsts\PluginUpdateChecker\v5p1;
 
 if ( !class_exists(InstalledPackage::class, false) ):
 
diff --git a/Puc/v5p0/Metadata.php b/Puc/v5p1/Metadata.php
similarity index 98%
rename from Puc/v5p0/Metadata.php
rename to Puc/v5p1/Metadata.php
index 92563fb..da8536b 100644
--- a/Puc/v5p0/Metadata.php
+++ b/Puc/v5p1/Metadata.php
@@ -1,5 +1,5 @@
 <?php
-namespace YahnisElsts\PluginUpdateChecker\v5p0;
+namespace YahnisElsts\PluginUpdateChecker\v5p1;
 
 use LogicException;
 use stdClass;
diff --git a/Puc/v5p0/OAuthSignature.php b/Puc/v5p1/OAuthSignature.php
similarity index 98%
rename from Puc/v5p0/OAuthSignature.php
rename to Puc/v5p1/OAuthSignature.php
index 9942709..578bc72 100644
--- a/Puc/v5p0/OAuthSignature.php
+++ b/Puc/v5p1/OAuthSignature.php
@@ -1,5 +1,5 @@
 <?php
-namespace YahnisElsts\PluginUpdateChecker\v5p0;
+namespace YahnisElsts\PluginUpdateChecker\v5p1;
 
 if ( !class_exists(OAuthSignature::class, false) ):
 
diff --git a/Puc/v5p0/Plugin/Package.php b/Puc/v5p1/Plugin/Package.php
similarity index 96%
rename from Puc/v5p0/Plugin/Package.php
rename to Puc/v5p1/Plugin/Package.php
index faf4bd0..b26e8f0 100644
--- a/Puc/v5p0/Plugin/Package.php
+++ b/Puc/v5p1/Plugin/Package.php
@@ -1,8 +1,8 @@
 <?php
-namespace YahnisElsts\PluginUpdateChecker\v5p0\Plugin;
+namespace YahnisElsts\PluginUpdateChecker\v5p1\Plugin;
 
-use YahnisElsts\PluginUpdateChecker\v5p0\InstalledPackage;
-use YahnisElsts\PluginUpdateChecker\v5p0\PucFactory;
+use YahnisElsts\PluginUpdateChecker\v5p1\InstalledPackage;
+use YahnisElsts\PluginUpdateChecker\v5p1\PucFactory;
 
 if ( !class_exists(Package::class, false) ):
 
diff --git a/Puc/v5p0/Plugin/PluginInfo.php b/Puc/v5p1/Plugin/PluginInfo.php
similarity index 97%
rename from Puc/v5p0/Plugin/PluginInfo.php
rename to Puc/v5p1/Plugin/PluginInfo.php
index 45700f9..db8e51e 100644
--- a/Puc/v5p0/Plugin/PluginInfo.php
+++ b/Puc/v5p1/Plugin/PluginInfo.php
@@ -1,7 +1,7 @@
 <?php
-namespace YahnisElsts\PluginUpdateChecker\v5p0\Plugin;
+namespace YahnisElsts\PluginUpdateChecker\v5p1\Plugin;
 
-use YahnisElsts\PluginUpdateChecker\v5p0\Metadata;
+use YahnisElsts\PluginUpdateChecker\v5p1\Metadata;
 
 if ( !class_exists(PluginInfo::class, false) ):
 
diff --git a/Puc/v5p0/Plugin/Ui.php b/Puc/v5p1/Plugin/Ui.php
similarity index 99%
rename from Puc/v5p0/Plugin/Ui.php
rename to Puc/v5p1/Plugin/Ui.php
index 880e31b..1b1fdf6 100644
--- a/Puc/v5p0/Plugin/Ui.php
+++ b/Puc/v5p1/Plugin/Ui.php
@@ -1,5 +1,5 @@
 <?php
-namespace YahnisElsts\PluginUpdateChecker\v5p0\Plugin;
+namespace YahnisElsts\PluginUpdateChecker\v5p1\Plugin;
 
 if ( !class_exists('Ui', false) ):
 	/**
diff --git a/Puc/v5p0/Plugin/Update.php b/Puc/v5p1/Plugin/Update.php
similarity index 96%
rename from Puc/v5p0/Plugin/Update.php
rename to Puc/v5p1/Plugin/Update.php
index a4543b0..475e496 100644
--- a/Puc/v5p0/Plugin/Update.php
+++ b/Puc/v5p1/Plugin/Update.php
@@ -1,7 +1,7 @@
 <?php
-namespace YahnisElsts\PluginUpdateChecker\v5p0\Plugin;
+namespace YahnisElsts\PluginUpdateChecker\v5p1\Plugin;
 
-use YahnisElsts\PluginUpdateChecker\v5p0\Update as BaseUpdate;
+use YahnisElsts\PluginUpdateChecker\v5p1\Update as BaseUpdate;
 
 if ( !class_exists(Update::class, false) ):
 
diff --git a/Puc/v5p0/Plugin/UpdateChecker.php b/Puc/v5p1/Plugin/UpdateChecker.php
similarity index 97%
rename from Puc/v5p0/Plugin/UpdateChecker.php
rename to Puc/v5p1/Plugin/UpdateChecker.php
index 84e73d8..ed4372e 100644
--- a/Puc/v5p0/Plugin/UpdateChecker.php
+++ b/Puc/v5p1/Plugin/UpdateChecker.php
@@ -1,10 +1,10 @@
 <?php
-namespace YahnisElsts\PluginUpdateChecker\v5p0\Plugin;
+namespace YahnisElsts\PluginUpdateChecker\v5p1\Plugin;
 
-use YahnisElsts\PluginUpdateChecker\v5p0\InstalledPackage;
-use YahnisElsts\PluginUpdateChecker\v5p0\UpdateChecker as BaseUpdateChecker;
-use YahnisElsts\PluginUpdateChecker\v5p0\Scheduler;
-use YahnisElsts\PluginUpdateChecker\v5p0\DebugBar;
+use YahnisElsts\PluginUpdateChecker\v5p1\InstalledPackage;
+use YahnisElsts\PluginUpdateChecker\v5p1\UpdateChecker as BaseUpdateChecker;
+use YahnisElsts\PluginUpdateChecker\v5p1\Scheduler;
+use YahnisElsts\PluginUpdateChecker\v5p1\DebugBar;
 
 if ( !class_exists(UpdateChecker::class, false) ):
 
diff --git a/Puc/v5p0/PucFactory.php b/Puc/v5p1/PucFactory.php
similarity index 97%
rename from Puc/v5p0/PucFactory.php
rename to Puc/v5p1/PucFactory.php
index a02cc1f..e9cc691 100644
--- a/Puc/v5p0/PucFactory.php
+++ b/Puc/v5p1/PucFactory.php
@@ -1,10 +1,10 @@
 <?php
 
-namespace YahnisElsts\PluginUpdateChecker\v5p0;
+namespace YahnisElsts\PluginUpdateChecker\v5p1;
 
-use YahnisElsts\PluginUpdateChecker\v5p0\Plugin;
-use YahnisElsts\PluginUpdateChecker\v5p0\Theme;
-use YahnisElsts\PluginUpdateChecker\v5p0\Vcs;
+use YahnisElsts\PluginUpdateChecker\v5p1\Plugin;
+use YahnisElsts\PluginUpdateChecker\v5p1\Theme;
+use YahnisElsts\PluginUpdateChecker\v5p1\Vcs;
 
 if ( !class_exists(PucFactory::class, false) ):
 
@@ -147,7 +147,7 @@ public static function buildUpdateChecker($metadataUrl, $fullPath, $slug = '', $
 		 *
 		 * Normalize a filesystem path. Introduced in WP 3.9.
 		 * Copying here allows use of the class on earlier versions.
-		 * This version adapted from WP 4.8.2 (unchanged since 4.5.0)
+		 * This version adapted from WP 4.8.2 (unchanged since 4.5.1)
 		 *
 		 * @param string $path Path to normalize.
 		 * @return string Normalized path.
diff --git a/Puc/v5p0/Scheduler.php b/Puc/v5p1/Scheduler.php
similarity index 99%
rename from Puc/v5p0/Scheduler.php
rename to Puc/v5p1/Scheduler.php
index 1bff943..b0a9707 100644
--- a/Puc/v5p0/Scheduler.php
+++ b/Puc/v5p1/Scheduler.php
@@ -1,5 +1,5 @@
 <?php
-namespace YahnisElsts\PluginUpdateChecker\v5p0;
+namespace YahnisElsts\PluginUpdateChecker\v5p1;
 
 if ( !class_exists(Scheduler::class, false) ):
 
diff --git a/Puc/v5p0/StateStore.php b/Puc/v5p1/StateStore.php
similarity index 98%
rename from Puc/v5p0/StateStore.php
rename to Puc/v5p1/StateStore.php
index fe3b4f5..b6f6cc1 100644
--- a/Puc/v5p0/StateStore.php
+++ b/Puc/v5p1/StateStore.php
@@ -1,5 +1,5 @@
 <?php
-namespace YahnisElsts\PluginUpdateChecker\v5p0;
+namespace YahnisElsts\PluginUpdateChecker\v5p1;
 
 if ( !class_exists(StateStore::class, false) ):
 
diff --git a/Puc/v5p0/Theme/Package.php b/Puc/v5p1/Theme/Package.php
similarity index 93%
rename from Puc/v5p0/Theme/Package.php
rename to Puc/v5p1/Theme/Package.php
index d677614..030046b 100644
--- a/Puc/v5p0/Theme/Package.php
+++ b/Puc/v5p1/Theme/Package.php
@@ -1,7 +1,7 @@
 <?php
-namespace YahnisElsts\PluginUpdateChecker\v5p0\Theme;
+namespace YahnisElsts\PluginUpdateChecker\v5p1\Theme;
 
-use YahnisElsts\PluginUpdateChecker\v5p0\InstalledPackage;
+use YahnisElsts\PluginUpdateChecker\v5p1\InstalledPackage;
 
 if ( !class_exists(Package::class, false) ):
 
diff --git a/Puc/v5p0/Theme/Update.php b/Puc/v5p1/Theme/Update.php
similarity index 94%
rename from Puc/v5p0/Theme/Update.php
rename to Puc/v5p1/Theme/Update.php
index f3c478e..7fd788b 100644
--- a/Puc/v5p0/Theme/Update.php
+++ b/Puc/v5p1/Theme/Update.php
@@ -1,8 +1,8 @@
 <?php
 
-namespace YahnisElsts\PluginUpdateChecker\v5p0\Theme;
+namespace YahnisElsts\PluginUpdateChecker\v5p1\Theme;
 
-use YahnisElsts\PluginUpdateChecker\v5p0\Update as BaseUpdate;
+use YahnisElsts\PluginUpdateChecker\v5p1\Update as BaseUpdate;
 
 if ( !class_exists(Update::class, false) ):
 
diff --git a/Puc/v5p0/Theme/UpdateChecker.php b/Puc/v5p1/Theme/UpdateChecker.php
similarity index 94%
rename from Puc/v5p0/Theme/UpdateChecker.php
rename to Puc/v5p1/Theme/UpdateChecker.php
index 45fdeb6..85ca5fb 100644
--- a/Puc/v5p0/Theme/UpdateChecker.php
+++ b/Puc/v5p1/Theme/UpdateChecker.php
@@ -1,11 +1,11 @@
 <?php
 
-namespace YahnisElsts\PluginUpdateChecker\v5p0\Theme;
+namespace YahnisElsts\PluginUpdateChecker\v5p1\Theme;
 
-use YahnisElsts\PluginUpdateChecker\v5p0\UpdateChecker as BaseUpdateChecker;
-use YahnisElsts\PluginUpdateChecker\v5p0\InstalledPackage;
-use YahnisElsts\PluginUpdateChecker\v5p0\Scheduler;
-use YahnisElsts\PluginUpdateChecker\v5p0\DebugBar;
+use YahnisElsts\PluginUpdateChecker\v5p1\UpdateChecker as BaseUpdateChecker;
+use YahnisElsts\PluginUpdateChecker\v5p1\InstalledPackage;
+use YahnisElsts\PluginUpdateChecker\v5p1\Scheduler;
+use YahnisElsts\PluginUpdateChecker\v5p1\DebugBar;
 
 if ( !class_exists(UpdateChecker::class, false) ):
 
diff --git a/Puc/v5p0/Update.php b/Puc/v5p1/Update.php
similarity index 93%
rename from Puc/v5p0/Update.php
rename to Puc/v5p1/Update.php
index 91eb555..f43d1ff 100644
--- a/Puc/v5p0/Update.php
+++ b/Puc/v5p1/Update.php
@@ -1,5 +1,5 @@
 <?php
-namespace YahnisElsts\PluginUpdateChecker\v5p0;
+namespace YahnisElsts\PluginUpdateChecker\v5p1;
 
 use stdClass;
 
diff --git a/Puc/v5p0/UpdateChecker.php b/Puc/v5p1/UpdateChecker.php
similarity index 99%
rename from Puc/v5p0/UpdateChecker.php
rename to Puc/v5p1/UpdateChecker.php
index 2c5c901..ab1bd26 100644
--- a/Puc/v5p0/UpdateChecker.php
+++ b/Puc/v5p1/UpdateChecker.php
@@ -1,5 +1,5 @@
 <?php
-namespace YahnisElsts\PluginUpdateChecker\v5p0;
+namespace YahnisElsts\PluginUpdateChecker\v5p1;
 
 use stdClass;
 use WP_Error;
diff --git a/Puc/v5p0/UpgraderStatus.php b/Puc/v5p1/UpgraderStatus.php
similarity index 99%
rename from Puc/v5p0/UpgraderStatus.php
rename to Puc/v5p1/UpgraderStatus.php
index be14268..2dc6736 100644
--- a/Puc/v5p0/UpgraderStatus.php
+++ b/Puc/v5p1/UpgraderStatus.php
@@ -1,5 +1,5 @@
 <?php
-namespace YahnisElsts\PluginUpdateChecker\v5p0;
+namespace YahnisElsts\PluginUpdateChecker\v5p1;
 
 if ( !class_exists(UpgraderStatus::class, false) ):
 
diff --git a/Puc/v5p0/Utils.php b/Puc/v5p1/Utils.php
similarity index 97%
rename from Puc/v5p0/Utils.php
rename to Puc/v5p1/Utils.php
index 0456cab..b664e1a 100644
--- a/Puc/v5p0/Utils.php
+++ b/Puc/v5p1/Utils.php
@@ -1,5 +1,5 @@
 <?php
-namespace YahnisElsts\PluginUpdateChecker\v5p0;
+namespace YahnisElsts\PluginUpdateChecker\v5p1;
 
 if ( !class_exists(Utils::class, false) ):
 
diff --git a/Puc/v5p0/Vcs/Api.php b/Puc/v5p1/Vcs/Api.php
similarity index 99%
rename from Puc/v5p0/Vcs/Api.php
rename to Puc/v5p1/Vcs/Api.php
index 56bd59f..44701e9 100644
--- a/Puc/v5p0/Vcs/Api.php
+++ b/Puc/v5p1/Vcs/Api.php
@@ -1,6 +1,6 @@
 <?php
 
-namespace YahnisElsts\PluginUpdateChecker\v5p0\Vcs;
+namespace YahnisElsts\PluginUpdateChecker\v5p1\Vcs;
 
 use Parsedown;
 use PucReadmeParser;
diff --git a/Puc/v5p0/Vcs/BaseChecker.php b/Puc/v5p1/Vcs/BaseChecker.php
similarity index 90%
rename from Puc/v5p0/Vcs/BaseChecker.php
rename to Puc/v5p1/Vcs/BaseChecker.php
index bd7e416..74c1215 100644
--- a/Puc/v5p0/Vcs/BaseChecker.php
+++ b/Puc/v5p1/Vcs/BaseChecker.php
@@ -1,5 +1,5 @@
 <?php
-namespace YahnisElsts\PluginUpdateChecker\v5p0\Vcs;
+namespace YahnisElsts\PluginUpdateChecker\v5p1\Vcs;
 
 if ( !interface_exists(BaseChecker::class, false) ):
 
diff --git a/Puc/v5p0/Vcs/BitBucketApi.php b/Puc/v5p1/Vcs/BitBucketApi.php
similarity index 97%
rename from Puc/v5p0/Vcs/BitBucketApi.php
rename to Puc/v5p1/Vcs/BitBucketApi.php
index ea3c51a..4205349 100644
--- a/Puc/v5p0/Vcs/BitBucketApi.php
+++ b/Puc/v5p1/Vcs/BitBucketApi.php
@@ -1,9 +1,9 @@
 <?php
 
-namespace YahnisElsts\PluginUpdateChecker\v5p0\Vcs;
+namespace YahnisElsts\PluginUpdateChecker\v5p1\Vcs;
 
-use YahnisElsts\PluginUpdateChecker\v5p0\OAuthSignature;
-use YahnisElsts\PluginUpdateChecker\v5p0\Utils;
+use YahnisElsts\PluginUpdateChecker\v5p1\OAuthSignature;
+use YahnisElsts\PluginUpdateChecker\v5p1\Utils;
 
 if ( !class_exists(BitBucketApi::class, false) ):
 
diff --git a/Puc/v5p0/Vcs/GitHubApi.php b/Puc/v5p1/Vcs/GitHubApi.php
similarity index 99%
rename from Puc/v5p0/Vcs/GitHubApi.php
rename to Puc/v5p1/Vcs/GitHubApi.php
index 0a20c78..364584b 100644
--- a/Puc/v5p0/Vcs/GitHubApi.php
+++ b/Puc/v5p1/Vcs/GitHubApi.php
@@ -1,6 +1,6 @@
 <?php
 
-namespace YahnisElsts\PluginUpdateChecker\v5p0\Vcs;
+namespace YahnisElsts\PluginUpdateChecker\v5p1\Vcs;
 
 use Parsedown;
 
diff --git a/Puc/v5p0/Vcs/GitLabApi.php b/Puc/v5p1/Vcs/GitLabApi.php
similarity index 99%
rename from Puc/v5p0/Vcs/GitLabApi.php
rename to Puc/v5p1/Vcs/GitLabApi.php
index 965a17c..663c2e7 100644
--- a/Puc/v5p0/Vcs/GitLabApi.php
+++ b/Puc/v5p1/Vcs/GitLabApi.php
@@ -1,6 +1,6 @@
 <?php
 
-namespace YahnisElsts\PluginUpdateChecker\v5p0\Vcs;
+namespace YahnisElsts\PluginUpdateChecker\v5p1\Vcs;
 
 if ( !class_exists(GitLabApi::class, false) ):
 
diff --git a/Puc/v5p0/Vcs/PluginUpdateChecker.php b/Puc/v5p1/Vcs/PluginUpdateChecker.php
similarity index 98%
rename from Puc/v5p0/Vcs/PluginUpdateChecker.php
rename to Puc/v5p1/Vcs/PluginUpdateChecker.php
index aa1dfae..082a847 100644
--- a/Puc/v5p0/Vcs/PluginUpdateChecker.php
+++ b/Puc/v5p1/Vcs/PluginUpdateChecker.php
@@ -1,8 +1,8 @@
 <?php
 
-namespace YahnisElsts\PluginUpdateChecker\v5p0\Vcs;
+namespace YahnisElsts\PluginUpdateChecker\v5p1\Vcs;
 
-use YahnisElsts\PluginUpdateChecker\v5p0\Plugin;
+use YahnisElsts\PluginUpdateChecker\v5p1\Plugin;
 
 if ( !class_exists(PluginUpdateChecker::class, false) ):
 
diff --git a/Puc/v5p0/Vcs/Reference.php b/Puc/v5p1/Vcs/Reference.php
similarity index 95%
rename from Puc/v5p0/Vcs/Reference.php
rename to Puc/v5p1/Vcs/Reference.php
index 7d06d88..6cff32a 100644
--- a/Puc/v5p0/Vcs/Reference.php
+++ b/Puc/v5p1/Vcs/Reference.php
@@ -1,5 +1,5 @@
 <?php
-namespace YahnisElsts\PluginUpdateChecker\v5p0\Vcs;
+namespace YahnisElsts\PluginUpdateChecker\v5p1\Vcs;
 
 if ( !class_exists(Reference::class, false) ):
 
diff --git a/Puc/v5p0/Vcs/ReleaseAssetSupport.php b/Puc/v5p1/Vcs/ReleaseAssetSupport.php
similarity index 97%
rename from Puc/v5p0/Vcs/ReleaseAssetSupport.php
rename to Puc/v5p1/Vcs/ReleaseAssetSupport.php
index b89a36f..6c4b0ff 100644
--- a/Puc/v5p0/Vcs/ReleaseAssetSupport.php
+++ b/Puc/v5p1/Vcs/ReleaseAssetSupport.php
@@ -1,6 +1,6 @@
 <?php
 
-namespace YahnisElsts\PluginUpdateChecker\v5p0\Vcs;
+namespace YahnisElsts\PluginUpdateChecker\v5p1\Vcs;
 
 if ( !trait_exists(ReleaseAssetSupport::class, false) ) :
 
diff --git a/Puc/v5p0/Vcs/ReleaseFilteringFeature.php b/Puc/v5p1/Vcs/ReleaseFilteringFeature.php
similarity index 98%
rename from Puc/v5p0/Vcs/ReleaseFilteringFeature.php
rename to Puc/v5p1/Vcs/ReleaseFilteringFeature.php
index 9c52a24..12ef54e 100644
--- a/Puc/v5p0/Vcs/ReleaseFilteringFeature.php
+++ b/Puc/v5p1/Vcs/ReleaseFilteringFeature.php
@@ -1,6 +1,6 @@
 <?php
 
-namespace YahnisElsts\PluginUpdateChecker\v5p0\Vcs;
+namespace YahnisElsts\PluginUpdateChecker\v5p1\Vcs;
 
 if ( !trait_exists(ReleaseFilteringFeature::class, false) ) :
 
diff --git a/Puc/v5p0/Vcs/ThemeUpdateChecker.php b/Puc/v5p1/Vcs/ThemeUpdateChecker.php
similarity index 94%
rename from Puc/v5p0/Vcs/ThemeUpdateChecker.php
rename to Puc/v5p1/Vcs/ThemeUpdateChecker.php
index b8624c6..c871ce9 100644
--- a/Puc/v5p0/Vcs/ThemeUpdateChecker.php
+++ b/Puc/v5p1/Vcs/ThemeUpdateChecker.php
@@ -1,9 +1,9 @@
 <?php
 
-namespace YahnisElsts\PluginUpdateChecker\v5p0\Vcs;
+namespace YahnisElsts\PluginUpdateChecker\v5p1\Vcs;
 
-use YahnisElsts\PluginUpdateChecker\v5p0\Theme;
-use YahnisElsts\PluginUpdateChecker\v5p0\Utils;
+use YahnisElsts\PluginUpdateChecker\v5p1\Theme;
+use YahnisElsts\PluginUpdateChecker\v5p1\Utils;
 
 if ( !class_exists(ThemeUpdateChecker::class, false) ):
 
diff --git a/Puc/v5p0/Vcs/VcsCheckerMethods.php b/Puc/v5p1/Vcs/VcsCheckerMethods.php
similarity index 95%
rename from Puc/v5p0/Vcs/VcsCheckerMethods.php
rename to Puc/v5p1/Vcs/VcsCheckerMethods.php
index acff9fc..113d663 100644
--- a/Puc/v5p0/Vcs/VcsCheckerMethods.php
+++ b/Puc/v5p1/Vcs/VcsCheckerMethods.php
@@ -1,6 +1,6 @@
 <?php
 
-namespace YahnisElsts\PluginUpdateChecker\v5p0\Vcs;
+namespace YahnisElsts\PluginUpdateChecker\v5p1\Vcs;
 
 if ( !trait_exists(VcsCheckerMethods::class, false) ) :
 
diff --git a/README.md b/README.md
index d2448a4..5a3b4b2 100644
--- a/README.md
+++ b/README.md
@@ -252,8 +252,8 @@ BitBucket doesn't have an equivalent to GitHub's releases, so the process is sli
 
 	Alternatively, if you're using a self-hosted GitLab instance, initialize the update checker like this:
 	```php
-	use YahnisElsts\PluginUpdateChecker\v5p0\Vcs\PluginUpdateChecker;
-	use YahnisElsts\PluginUpdateChecker\v5p0\Vcs\GitLabApi;
+	use YahnisElsts\PluginUpdateChecker\v5p1\Vcs\PluginUpdateChecker;
+	use YahnisElsts\PluginUpdateChecker\v5p1\Vcs\GitLabApi;
 	
 	$myUpdateChecker = new PluginUpdateChecker(
 		new GitLabApi('https://myserver.com/user-name/repo-name/'),
@@ -264,8 +264,8 @@ BitBucket doesn't have an equivalent to GitHub's releases, so the process is sli
 	```
 	If you're using a self-hosted GitLab instance and [subgroups or nested groups](https://docs.gitlab.com/ce/user/group/subgroups/index.html), you have to tell the update checker which parts of the URL are subgroups:
 	```php
-	use YahnisElsts\PluginUpdateChecker\v5p0\Vcs\PluginUpdateChecker;
-	use YahnisElsts\PluginUpdateChecker\v5p0\Vcs\GitLabApi;
+	use YahnisElsts\PluginUpdateChecker\v5p1\Vcs\PluginUpdateChecker;
+	use YahnisElsts\PluginUpdateChecker\v5p1\Vcs\GitLabApi;
    
 	$myUpdateChecker = new PluginUpdateChecker(
 		new GitLabApi(
@@ -347,14 +347,14 @@ Other classes have also been renamed, usually by simply removing the `Puc_vXpY_`
 | Old class name                      | New class name                                                 |
 |-------------------------------------|----------------------------------------------------------------|
 | `Puc_v4_Factory`                    | `YahnisElsts\PluginUpdateChecker\v5\PucFactory`                |
-| `Puc_v4p13_Factory`                 | `YahnisElsts\PluginUpdateChecker\v5p0\PucFactory`              |
-| `Puc_v4p13_Plugin_UpdateChecker`    | `YahnisElsts\PluginUpdateChecker\v5p0\Plugin\UpdateChecker`    |
-| `Puc_v4p13_Theme_UpdateChecker`     | `YahnisElsts\PluginUpdateChecker\v5p0\Theme\UpdateChecker`     |
-| `Puc_v4p13_Vcs_PluginUpdateChecker` | `YahnisElsts\PluginUpdateChecker\v5p0\Vcs\PluginUpdateChecker` |
-| `Puc_v4p13_Vcs_ThemeUpdateChecker`  | `YahnisElsts\PluginUpdateChecker\v5p0\Vcs\ThemeUpdateChecker`  |
-| `Puc_v4p13_Vcs_GitHubApi`           | `YahnisElsts\PluginUpdateChecker\v5p0\Vcs\GitHubApi`           |
-| `Puc_v4p13_Vcs_GitLabApi`           | `YahnisElsts\PluginUpdateChecker\v5p0\Vcs\GitLabApi`           |
-| `Puc_v4p13_Vcs_BitBucketApi`        | `YahnisElsts\PluginUpdateChecker\v5p0\Vcs\BitBucketApi`        |
+| `Puc_v4p13_Factory`                 | `YahnisElsts\PluginUpdateChecker\v5p1\PucFactory`              |
+| `Puc_v4p13_Plugin_UpdateChecker`    | `YahnisElsts\PluginUpdateChecker\v5p1\Plugin\UpdateChecker`    |
+| `Puc_v4p13_Theme_UpdateChecker`     | `YahnisElsts\PluginUpdateChecker\v5p1\Theme\UpdateChecker`     |
+| `Puc_v4p13_Vcs_PluginUpdateChecker` | `YahnisElsts\PluginUpdateChecker\v5p1\Vcs\PluginUpdateChecker` |
+| `Puc_v4p13_Vcs_ThemeUpdateChecker`  | `YahnisElsts\PluginUpdateChecker\v5p1\Vcs\ThemeUpdateChecker`  |
+| `Puc_v4p13_Vcs_GitHubApi`           | `YahnisElsts\PluginUpdateChecker\v5p1\Vcs\GitHubApi`           |
+| `Puc_v4p13_Vcs_GitLabApi`           | `YahnisElsts\PluginUpdateChecker\v5p1\Vcs\GitLabApi`           |
+| `Puc_v4p13_Vcs_BitBucketApi`        | `YahnisElsts\PluginUpdateChecker\v5p1\Vcs\BitBucketApi`        |
 
 License Management
 ------------------
diff --git a/composer.json b/composer.json
index 0589f01..1a71ce8 100644
--- a/composer.json
+++ b/composer.json
@@ -18,6 +18,6 @@
 		"ext-json": "*"
 	},
 	"autoload": {
-		"files": ["load-v5p0.php"]
+		"files": ["load-v5p1.php"]
 	}
 }
diff --git a/languages/plugin-update-checker.pot b/languages/plugin-update-checker.pot
index ec7bc19..edc8de4 100644
--- a/languages/plugin-update-checker.pot
+++ b/languages/plugin-update-checker.pot
@@ -17,33 +17,33 @@ msgstr ""
 "X-Poedit-KeywordsList: __;_e;_x:1,2c;_x\n"
 "X-Poedit-SearchPath-0: .\n"
 
-#: Puc/v5p0/Plugin/Ui.php:128
+#: Puc/v5p1/Plugin/Ui.php:128
 msgid "Check for updates"
 msgstr ""
 
-#: Puc/v5p0/Plugin/Ui.php:214
+#: Puc/v5p1/Plugin/Ui.php:214
 #, php-format
 msgctxt "the plugin title"
 msgid "The %s plugin is up to date."
 msgstr ""
 
-#: Puc/v5p0/Plugin/Ui.php:216
+#: Puc/v5p1/Plugin/Ui.php:216
 #, php-format
 msgctxt "the plugin title"
 msgid "A new version of the %s plugin is available."
 msgstr ""
 
-#: Puc/v5p0/Plugin/Ui.php:218
+#: Puc/v5p1/Plugin/Ui.php:218
 #, php-format
 msgctxt "the plugin title"
 msgid "Could not determine if updates are available for %s."
 msgstr ""
 
-#: Puc/v5p0/Plugin/Ui.php:224
+#: Puc/v5p1/Plugin/Ui.php:224
 #, php-format
 msgid "Unknown update checker status \"%s\""
 msgstr ""
 
-#: Puc/v5p0/Vcs/PluginUpdateChecker.php:100
+#: Puc/v5p1/Vcs/PluginUpdateChecker.php:100
 msgid "There is no changelog available."
 msgstr ""
diff --git a/load-v5p0.php b/load-v5p1.php
similarity index 80%
rename from load-v5p0.php
rename to load-v5p1.php
index 7998cbf..83cebcb 100644
--- a/load-v5p0.php
+++ b/load-v5p1.php
@@ -1,14 +1,14 @@
 <?php
 
-namespace YahnisElsts\PluginUpdateChecker\v5p0;
+namespace YahnisElsts\PluginUpdateChecker\v5p1;
 
 use YahnisElsts\PluginUpdateChecker\v5\PucFactory as MajorFactory;
-use YahnisElsts\PluginUpdateChecker\v5p0\PucFactory as MinorFactory;
+use YahnisElsts\PluginUpdateChecker\v5p1\PucFactory as MinorFactory;
 
-require __DIR__ . '/Puc/v5p0/Autoloader.php';
+require __DIR__ . '/Puc/v5p1/Autoloader.php';
 new Autoloader();
 
-require __DIR__ . '/Puc/v5p0/PucFactory.php';
+require __DIR__ . '/Puc/v5p1/PucFactory.php';
 require __DIR__ . '/Puc/v5/PucFactory.php';
 
 //Register classes defined in this version with the factory.
@@ -26,9 +26,9 @@
 	)
 	as $pucGeneralClass => $pucVersionedClass
 ) {
-	MajorFactory::addVersion($pucGeneralClass, $pucVersionedClass, '5.0');
+	MajorFactory::addVersion($pucGeneralClass, $pucVersionedClass, '5.1');
 	//Also add it to the minor-version factory in case the major-version factory
 	//was already defined by another, older version of the update checker.
-	MinorFactory::addVersion($pucGeneralClass, $pucVersionedClass, '5.0');
+	MinorFactory::addVersion($pucGeneralClass, $pucVersionedClass, '5.1');
 }
 
diff --git a/plugin-update-checker.php b/plugin-update-checker.php
index 1d892f3..ebf10bc 100644
--- a/plugin-update-checker.php
+++ b/plugin-update-checker.php
@@ -1,10 +1,10 @@
 <?php
 /**
- * Plugin Update Checker Library 5.0
+ * Plugin Update Checker Library 5.1
  * http://w-shadow.com/
  *
  * Copyright 2022 Janis Elsts
  * Released under the MIT license. See license.txt for details.
  */
 
-require dirname(__FILE__) . '/load-v5p0.php';
\ No newline at end of file
+require dirname(__FILE__) . '/load-v5p1.php';
\ No newline at end of file