diff --git a/src/Psalm/Config.php b/src/Psalm/Config.php
index 2633a8986..61f83ed61 100644
--- a/src/Psalm/Config.php
+++ b/src/Psalm/Config.php
@@ -451,11 +451,9 @@ class Config
     public $forbidden_functions = [];
 
     /**
-     * TODO: Psalm 6: Update default to be true and remove warning.
-     *
      * @var bool
      */
-    public $find_unused_code = false;
+    public $find_unused_code = true;
 
     /**
      * @var bool
@@ -467,10 +465,7 @@ class Config
      */
     public $find_unused_psalm_suppress = false;
 
-    /**
-     * TODO: Psalm 6: Update default to be true and remove warning.
-     */
-    public bool $find_unused_baseline_entry = false;
+    public bool $find_unused_baseline_entry = true;
 
     /**
      * @var bool
@@ -994,9 +989,6 @@ class Config
     ): void {
         $config->config_issues = [];
 
-        // Attributes to be removed in Psalm 6
-        $deprecated_attributes = [];
-
         /** @var list<string> */
         $deprecated_elements = [];
 
@@ -1004,12 +996,6 @@ class Config
         assert($psalm_element_item !== null);
         $attributes = $psalm_element_item->attributes;
 
-        foreach ($attributes as $attribute) {
-            if (in_array($attribute->name, $deprecated_attributes, true)) {
-                self::processDeprecatedAttribute($attribute, $file_contents, $config, $config_path);
-            }
-        }
-
         foreach ($deprecated_elements as $deprecated_element) {
             $deprecated_elements_xml = $dom_document->getElementsByTagNameNS(
                 self::CONFIG_NAMESPACE,
@@ -1221,18 +1207,10 @@ class Config
             $config->compressor = 'deflate';
         }
 
-        if (!isset($config_xml['findUnusedBaselineEntry'])) {
-            $config->config_warnings[] = '"findUnusedBaselineEntry" will default to "true" in Psalm 6.'
-                . ' You should explicitly enable or disable this setting.';
-        }
-
         if (isset($config_xml['findUnusedCode'])) {
             $attribute_text = (string) $config_xml['findUnusedCode'];
             $config->find_unused_code = $attribute_text === 'true' || $attribute_text === '1';
             $config->find_unused_variables = $config->find_unused_code;
-        } else {
-            $config->config_warnings[] = '"findUnusedCode" will default to "true" in Psalm 6.'
-                . ' You should explicitly enable or disable this setting.';
         }
 
         if (isset($config_xml['findUnusedVariablesAndParams'])) {
@@ -2278,19 +2256,6 @@ class Config
             }
         }
 
-        /** @deprecated Will be removed in Psalm 6 */
-        $extensions_to_load_stubs_using_deprecated_way = ['apcu', 'random', 'redis'];
-        foreach ($extensions_to_load_stubs_using_deprecated_way as $ext_name) {
-            $ext_stub_path = $ext_stubs_dir . DIRECTORY_SEPARATOR . "$ext_name.phpstub";
-            $is_stub_already_loaded = in_array($ext_stub_path, $this->internal_stubs, true);
-            $is_ext_explicitly_disabled = ($this->php_extensions[$ext_name] ?? null) === false;
-            if (! $is_stub_already_loaded && ! $is_ext_explicitly_disabled && extension_loaded($ext_name)) {
-                $this->internal_stubs[] = $ext_stub_path;
-                $this->config_warnings[] = "Psalm 6 will not automatically load stubs for ext-$ext_name."
-                    . " You should explicitly enable or disable this ext in composer.json or Psalm config.";
-            }
-        }
-
         foreach ($this->internal_stubs as $stub_path) {
             if (!file_exists($stub_path)) {
                 throw new UnexpectedValueException('Cannot locate ' . $stub_path);
diff --git a/src/Psalm/ErrorBaseline.php b/src/Psalm/ErrorBaseline.php
index 9a83b0a28..9615795d3 100644
--- a/src/Psalm/ErrorBaseline.php
+++ b/src/Psalm/ErrorBaseline.php
@@ -120,12 +120,6 @@ final class ErrorBaseline
                     $files[$fileName][$issueType]['o'] += 1;
                     $files[$fileName][$issueType]['s'][] = str_replace("\r\n", "\n", trim($codeSample->textContent));
                 }
-
-                // TODO: Remove in Psalm 6
-                $occurrencesAttr = $issue->getAttribute('occurrences');
-                if ($occurrencesAttr !== '') {
-                    $files[$fileName][$issueType]['o'] = (int) $occurrencesAttr;
-                }
             }
         }
 
diff --git a/src/Psalm/Plugin/Shepherd.php b/src/Psalm/Plugin/Shepherd.php
index d6b0f0dd5..5a8a30af2 100644
--- a/src/Psalm/Plugin/Shepherd.php
+++ b/src/Psalm/Plugin/Shepherd.php
@@ -63,21 +63,7 @@ final class Shepherd implements AfterAnalysisInterface
 
         $config = $event->getCodebase()->config;
 
-        /**
-         * Deprecated logic, in Psalm 6 just use $config->shepherd_endpoint
-         * '#' here is just a hack/marker to use a custom endpoint instead just a custom domain
-         * case 1: empty option                                         (use https://shepherd.dev/hooks/psalm/)
-         * case 2: custom domain (/hooks/psalm should be appended)      (use https://custom.domain/hooks/psalm)
-         * case 3: custom endpoint (/hooks/psalm should be appended)    (use custom endpoint)
-         */
-        if (substr_compare($config->shepherd_endpoint, '#', -1) === 0) {
-            $shepherd_endpoint = $config->shepherd_endpoint;
-        } else {
-            /** @psalm-suppress DeprecatedProperty, DeprecatedMethod */
-            $shepherd_endpoint = self::buildShepherdUrlFromHost($config->shepherd_host);
-        }
-
-        self::sendPayload($shepherd_endpoint, $rawPayload);
+        self::sendPayload($config->shepherd_endpoint, $rawPayload);
     }
 
     /**
diff --git a/src/Psalm/Storage/FunctionLikeStorage.php b/src/Psalm/Storage/FunctionLikeStorage.php
index d158b3d55..7da0a2cea 100644
--- a/src/Psalm/Storage/FunctionLikeStorage.php
+++ b/src/Psalm/Storage/FunctionLikeStorage.php
@@ -179,6 +179,11 @@ abstract class FunctionLikeStorage implements HasAttributesInterface
 
     public bool $has_undertyped_native_parameters = false;
 
+    /**
+     * @var bool
+     */
+    public $is_static = false;
+
     /**
      * @var bool
      */
diff --git a/src/Psalm/Storage/FunctionStorage.php b/src/Psalm/Storage/FunctionStorage.php
index 813730f56..e39e7cc23 100644
--- a/src/Psalm/Storage/FunctionStorage.php
+++ b/src/Psalm/Storage/FunctionStorage.php
@@ -6,10 +6,4 @@ final class FunctionStorage extends FunctionLikeStorage
 {
     /** @var array<string, bool> */
     public $byref_uses = [];
-
-    /**
-     * @var bool
-     * @todo lift this property to FunctionLikeStorage in Psalm 6
-     */
-    public $is_static = false;
 }