diff --git a/MathMathML.php b/MathMathML.php
index 26ee1b3a9..722dfc994 100644
--- a/MathMathML.php
+++ b/MathMathML.php
@@ -81,12 +81,16 @@ class MathMathML extends MathRenderer {
 	public function render( $forceReRendering = false ) {
 		global $wgMathFullRestbaseURL;
 		try {
+			if ( $forceReRendering ) {
+				$this->setPurge( true );
+			}
 			if ( in_array( $this->inputType, $this->restbaseInputTypes ) &&
 				$this->mode == 'mathml'
 			) {
 				if ( !$this->rbi ) {
 					$this->rbi =
 						new MathRestbaseInterface( $this->getTex(), $this->getInputType() );
+					$this->rbi->setPurge( $this->isPurge() );
 				}
 				$rbi = $this->rbi;
 				if ( $rbi->getSuccess() ) {
@@ -99,9 +103,6 @@ class MathMathML extends MathRenderer {
 				$this->changed = false;
 				return $rbi->getSuccess();
 			}
-			if ( $forceReRendering ) {
-				$this->setPurge( true );
-			}
 			if ( $this->renderingRequired() ) {
 				return $this->doRender();
 			}
diff --git a/MathRenderer.php b/MathRenderer.php
index e5ed80444..87c427a48 100644
--- a/MathRenderer.php
+++ b/MathRenderer.php
@@ -385,6 +385,7 @@ abstract class MathRenderer {
 	 */
 	public function setRestbaseInterface( $param ) {
 		$this->rbi = $param;
+		$this->rbi->setPurge( $this->isPurge() );
 	}
 
 	/**
diff --git a/MathRestbaseInterface.php b/MathRestbaseInterface.php
index 3f4283289..bf2e59053 100644
--- a/MathRestbaseInterface.php
+++ b/MathRestbaseInterface.php
@@ -18,6 +18,8 @@ class MathRestbaseInterface {
 	private $error;
 	private $mathoidStyle;
 	private $mml;
+	/** @var boolean is there a request to purge the existing mathematical content */
+	private $purge = false;
 
 	/**
 	 * MathRestbaseInterface constructor.
@@ -66,6 +68,18 @@ class MathRestbaseInterface {
 		}
 	}
 
+	/**
+	 * Lets this instance know if this is a purge request. When set to true,
+	 * it will cause the object to issue the first content request with a
+	 * 'Cache-Control: no-cache' header to prompt the regeneration of the
+	 * renders.
+	 *
+	 * @param bool $purge whether this is a purge request
+	 */
+	public function setPurge( $purge = true ) {
+		$this->purge = $purge;
+	}
+
 	/**
 	 * @return string MathML code
 	 * @throws MWException
@@ -383,6 +397,12 @@ class MathRestbaseInterface {
 			'method' => 'GET',
 			'url' => $this->getUrl( "media/math/render/$type/{$this->hash}" )
 		];
+		if ( $this->purge ) {
+			$request['headers'] = [
+				'Cache-Control' => 'no-cache'
+			];
+			$this->purge = false;
+		}
 		return $request;
 	}