diff --git a/lib/ContextStackTrait.php b/lib/ContextStackTrait.php
index 4e15bd4..e8e07b3 100644
--- a/lib/ContextStackTrait.php
+++ b/lib/ContextStackTrait.php
@@ -92,6 +92,8 @@ trait ContextStackTrait
      * This allows you to safely modify the elementMap, contextUri or
      * namespaceMap. After you're done, you can restore the old data again
      * with popContext.
+     *
+     * @return void
      */
     public function pushContext()
     {
@@ -105,6 +107,8 @@ public function pushContext()
 
     /**
      * Restore the previous "context".
+     *
+     * @return void
      */
     public function popContext()
     {
diff --git a/phpstan-baseline.neon b/phpstan-baseline.neon
index ea694a9..662dc7e 100644
--- a/phpstan-baseline.neon
+++ b/phpstan-baseline.neon
@@ -75,16 +75,6 @@ parameters:
 			count: 1
 			path: lib/Reader.php
 
-		-
-			message: "#^Method Sabre\\\\Xml\\\\Reader\\:\\:popContext\\(\\) has no return type specified\\.$#"
-			count: 1
-			path: lib/Reader.php
-
-		-
-			message: "#^Method Sabre\\\\Xml\\\\Reader\\:\\:pushContext\\(\\) has no return type specified\\.$#"
-			count: 1
-			path: lib/Reader.php
-
 		-
 			message: "#^Property Sabre\\\\Xml\\\\Reader\\:\\:\\$classMap type has no value type specified in iterable type array\\.$#"
 			count: 1
@@ -155,16 +145,6 @@ parameters:
 			count: 1
 			path: lib/Service.php
 
-		-
-			message: "#^Method Sabre\\\\Xml\\\\Writer\\:\\:popContext\\(\\) has no return type specified\\.$#"
-			count: 1
-			path: lib/Writer.php
-
-		-
-			message: "#^Method Sabre\\\\Xml\\\\Writer\\:\\:pushContext\\(\\) has no return type specified\\.$#"
-			count: 1
-			path: lib/Writer.php
-
 		-
 			message: "#^Method Sabre\\\\Xml\\\\Writer\\:\\:write\\(\\) has no return type specified\\.$#"
 			count: 1