diff --git a/src/Framework/MockObject/MockBuilder.php b/src/Framework/MockObject/MockBuilder.php
index f7ff8ad6e2e..451f27512a4 100644
--- a/src/Framework/MockObject/MockBuilder.php
+++ b/src/Framework/MockObject/MockBuilder.php
@@ -358,66 +358,6 @@ public function enableArgumentCloning(): self
         return $this;
     }
 
-    /**
-     * Enables the invocation of the original methods.
-     *
-     * @return $this
-     *
-     * @deprecated https://github.com/sebastianbergmann/phpunit/issues/5307
-     */
-    public function enableProxyingToOriginalMethods(): self
-    {
-        if (!$this->calledFromTestCase()) {
-            EventFacade::emitter()->testTriggeredPhpunitDeprecation(
-                $this->testCase->valueObjectForEvents(),
-                'MockBuilder::enableProxyingToOriginalMethods() is deprecated and will be removed in PHPUnit 12 without replacement.',
-            );
-        }
-
-        $this->callOriginalMethods = true;
-
-        return $this;
-    }
-
-    /**
-     * Disables the invocation of the original methods.
-     *
-     * @return $this
-     *
-     * @deprecated https://github.com/sebastianbergmann/phpunit/issues/5307
-     */
-    public function disableProxyingToOriginalMethods(): self
-    {
-        EventFacade::emitter()->testTriggeredPhpunitDeprecation(
-            $this->testCase->valueObjectForEvents(),
-            'MockBuilder::disableProxyingToOriginalMethods() is deprecated and will be removed in PHPUnit 12 without replacement.',
-        );
-
-        $this->callOriginalMethods = false;
-        $this->proxyTarget         = null;
-
-        return $this;
-    }
-
-    /**
-     * Sets the proxy target.
-     *
-     * @return $this
-     *
-     * @deprecated https://github.com/sebastianbergmann/phpunit/issues/5307
-     */
-    public function setProxyTarget(object $object): self
-    {
-        EventFacade::emitter()->testTriggeredPhpunitDeprecation(
-            $this->testCase->valueObjectForEvents(),
-            'MockBuilder::setProxyTarget() is deprecated and will be removed in PHPUnit 12 without replacement.',
-        );
-
-        $this->proxyTarget = $object;
-
-        return $this;
-    }
-
     /**
      * @return $this
      *