diff --git a/lib/SimpleSAML/Session.php b/lib/SimpleSAML/Session.php
index 998045ff1dda102117509ce58cd9112afaabfbb2..199e72f1a67829a22d094aae0f121439106964b3 100644
--- a/lib/SimpleSAML/Session.php
+++ b/lib/SimpleSAML/Session.php
@@ -734,20 +734,6 @@ class SimpleSAML_Session {
 	}
 
 
-	/**
-	 * Set the attributes for this session.
-	 *
-	 * @param array|NULL $attributes  The attributes of this session.
-	 * @deprecated
-	 */
-	public function setAttributes($attributes) {
-		assert('isset($this->authData[$this->authority])');
-
-		$this->dirty = true;
-		$this->authData[$this->authority]['Attributes'] = $attributes;
-	}
-
-
 	/**
 	 * Calculates the size of the session object after serialization
 	 *