diff --git a/config.xsd b/config.xsd
index a909e644933..a4f4b5042f5 100644
--- a/config.xsd
+++ b/config.xsd
@@ -49,18 +49,6 @@
         <xs:attribute name="ignoreInternalFunctionNullReturn" type="xs:boolean" default="true" />
         <xs:attribute name="includePhpVersionsInErrorBaseline" type="xs:boolean" default="false" />
         <xs:attribute name="inferPropertyTypesFromConstructor" type="xs:boolean" default="true" />
-        <xs:attribute name="loadXdebugStub" type="xs:boolean">
-            <xs:annotation>
-                <xs:documentation xml:lang="en">
-                    Default is runtime-specific: if not present, Psalm will only load the Xdebug stub if psalm has unloaded the extension.
-                </xs:documentation>
-
-                <!-- note: for PHPStorm to mark the attribute as deprecated the doc entry has to be *single line* and start with the word `deprecated` -->
-                <xs:documentation xml:lang="en">
-                    Deprecated. In Psalm 5 extensions will be loaded based on composer.json and overridden with enableExtensions/disableExtensions.
-                </xs:documentation>
-            </xs:annotation>
-        </xs:attribute>
         <xs:attribute name="memoizeMethodCallResults" type="xs:boolean" default="false" />
         <xs:attribute name="rememberPropertyAssignmentsAfterCall" type="xs:boolean" default="true" />
         <xs:attribute name="resolveFromConfigFile" type="xs:boolean" default="true" />
diff --git a/docs/running_psalm/configuration.md b/docs/running_psalm/configuration.md
index dae932211a6..d50b3633e32 100644
--- a/docs/running_psalm/configuration.md
+++ b/docs/running_psalm/configuration.md
@@ -246,17 +246,6 @@ When `true`, Psalm will attempt to find all unused code (including unused variab
 ```
 When `true`, Psalm will report all `@psalm-suppress` annotations that aren't used, the equivalent of running with `--find-unused-psalm-suppress`. Defaults to `false`.
 
-#### loadXdebugStub
-```xml
-<psalm
-  loadXdebugStub="[bool]"
->
-```
-Deprecated, use &lt;enableExtensions&gt; instead.
-If not present, Psalm will only load the Xdebug stub if Psalm has unloaded the extension.
-When `true`, Psalm will load the Xdebug extension stub (as the extension is unloaded when Psalm runs).
-Setting to `false` prevents the stub from loading.
-
 #### ensureArrayStringOffsetsExist
 ```xml
 <psalm
diff --git a/psalm-baseline.xml b/psalm-baseline.xml
index 614c782fb9e..1f7e035e144 100644
--- a/psalm-baseline.xml
+++ b/psalm-baseline.xml
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="UTF-8"?>
-<files psalm-version="dev-master@c90cffd382bb7a5d390387d4ad2a02a4935fba5c">
+<files psalm-version="dev-master@093edcbe1d5c90ad574efcddd62fe741819e7cf2">
   <file src="examples/TemplateChecker.php">
     <PossiblyUndefinedIntArrayOffset occurrences="2">
       <code>$comment_block-&gt;tags['variablesfrom'][0]</code>
@@ -24,9 +24,6 @@
       <code>getAdditionalFileTypeAnalyzers</code>
       <code>getAdditionalFileTypeScanners</code>
     </DeprecatedMethod>
-    <DeprecatedProperty occurrences="1">
-      <code>$this-&gt;load_xdebug_stub</code>
-    </DeprecatedProperty>
   </file>
   <file src="src/Psalm/Config/FileFilter.php">
     <PossiblyUndefinedIntArrayOffset occurrences="1">
@@ -203,12 +200,6 @@
       <code>$stmt-&gt;expr-&gt;getArgs()[0]</code>
     </PossiblyUndefinedIntArrayOffset>
   </file>
-  <file src="src/Psalm/Internal/Cli/Psalm.php">
-    <DeprecatedProperty occurrences="2">
-      <code>$config-&gt;load_xdebug_stub</code>
-      <code>$config-&gt;load_xdebug_stub</code>
-    </DeprecatedProperty>
-  </file>
   <file src="src/Psalm/Internal/Codebase/InternalCallMapHandler.php">
     <PossiblyUndefinedIntArrayOffset occurrences="2">
       <code>$callables[0]</code>
@@ -286,8 +277,7 @@
     <DeprecatedProperty occurrences="1">
       <code>$storage-&gt;template_extended_count</code>
     </DeprecatedProperty>
-    <PossiblyUndefinedIntArrayOffset occurrences="4">
-      <code>$imported_type_data[3]</code>
+    <PossiblyUndefinedIntArrayOffset occurrences="3">
       <code>$l[4]</code>
       <code>$r[4]</code>
       <code>$var_line_parts[0]</code>
diff --git a/src/Psalm/Config.php b/src/Psalm/Config.php
index 06c89692b43..44ac5f26387 100644
--- a/src/Psalm/Config.php
+++ b/src/Psalm/Config.php
@@ -196,15 +196,6 @@ class Config
      */
     public $throw_exception = false;
 
-    /**
-     * Whether or not to load Xdebug stub
-     *
-     * @deprecated going to be removed in Psalm 5
-     *
-     * @var bool|null
-     */
-    public $load_xdebug_stub;
-
     /**
      * The directory to store PHP Parser (and other) caches
      *
@@ -957,7 +948,6 @@ private static function fromXmlAndPaths(
             'ignoreInternalFunctionFalseReturn' => 'ignore_internal_falsable_issues',
             'ignoreInternalFunctionNullReturn' => 'ignore_internal_nullable_issues',
             'includePhpVersionsInErrorBaseline' => 'include_php_versions_in_error_baseline',
-            'loadXdebugStub' => 'load_xdebug_stub',
             'ensureArrayStringOffsetsExist' => 'ensure_array_string_offsets_exist',
             'ensureArrayIntOffsetsExist' => 'ensure_array_int_offsets_exist',
             'reportMixedIssues' => 'show_mixed_issues',
@@ -1004,10 +994,6 @@ private static function fromXmlAndPaths(
             $config->php_extensions[$ext] = isset($composer_json["require"]["ext-$ext"]);
         }
 
-        if ($config->load_xdebug_stub !== null) {
-            $config->php_extensions["xdebug"] = $config->load_xdebug_stub;
-        }
-
         if (isset($config_xml->enableExtensions) && isset($config_xml->enableExtensions->extension)) {
             foreach ($config_xml->enableExtensions->extension as $extension) {
                 assert(isset($extension["name"]));
diff --git a/src/Psalm/Internal/Cli/Psalm.php b/src/Psalm/Internal/Cli/Psalm.php
index 70893dddc4a..2063355c711 100644
--- a/src/Psalm/Internal/Cli/Psalm.php
+++ b/src/Psalm/Internal/Cli/Psalm.php
@@ -253,7 +253,7 @@ public static function run(array $argv): void
 
         self::emitMacPcreWarning($options, $threads);
 
-        self::restart($options, $config, $threads);
+        self::restart($options, $threads);
 
         if (isset($options['debug-emitted-issues'])) {
             $config->debug_emitted_issues = true;
@@ -882,7 +882,7 @@ private static function emitMacPcreWarning(array $options, int $threads): void
         }
     }
 
-    private static function restart(array $options, Config $config, int $threads): void
+    private static function restart(array $options, int $threads): void
     {
         $ini_handler = new PsalmRestarter('PSALM');
 
@@ -907,10 +907,6 @@ private static function restart(array $options, Config $config, int $threads): v
 
         // If Xdebug is enabled, restart without it
         $ini_handler->check();
-
-        if ($config->load_xdebug_stub === null && PsalmRestarter::getSkippedVersion() !== '') {
-            $config->load_xdebug_stub = true;
-        }
     }
 
     private static function detectThreads(array $options, Config $config, bool $in_ci): int