diff --git a/src/XML/wst/AbstractClaimsType.php b/src/XML/wst/AbstractClaimsType.php
index f58974cf..e537ef2b 100644
--- a/src/XML/wst/AbstractClaimsType.php
+++ b/src/XML/wst/AbstractClaimsType.php
@@ -13,8 +13,6 @@
 use SimpleSAML\XML\ExtendableElementTrait;
 use SimpleSAML\XML\XsNamespace as NS;
 
-use function array_pop;
-
 /**
  * Class defining the ClaimsType element
  *
diff --git a/src/XML/wst/AbstractEntropyType.php b/src/XML/wst/AbstractEntropyType.php
index 43708f75..a749ab6a 100644
--- a/src/XML/wst/AbstractEntropyType.php
+++ b/src/XML/wst/AbstractEntropyType.php
@@ -12,8 +12,6 @@
 use SimpleSAML\XML\ExtendableElementTrait;
 use SimpleSAML\XML\XsNamespace as NS;
 
-use function array_pop;
-
 /**
  * Class defining the EntropyType element
  *
diff --git a/src/XML/wst/AbstractLifetimeType.php b/src/XML/wst/AbstractLifetimeType.php
index f5502c63..4906086b 100644
--- a/src/XML/wst/AbstractLifetimeType.php
+++ b/src/XML/wst/AbstractLifetimeType.php
@@ -9,7 +9,6 @@
 use SimpleSAML\WSSecurity\XML\wsu\Created;
 use SimpleSAML\WSSecurity\XML\wsu\Expires;
 use SimpleSAML\XML\Exception\InvalidDOMElementException;
-use SimpleSAML\XML\Exception\MissingElementException;
 use SimpleSAML\XML\Exception\TooManyElementsException;
 
 /**
diff --git a/tests/WSSecurity/XML/wst/LifetimeTest.php b/tests/WSSecurity/XML/wst/LifetimeTest.php
index b6e812bf..386cf7f0 100644
--- a/tests/WSSecurity/XML/wst/LifetimeTest.php
+++ b/tests/WSSecurity/XML/wst/LifetimeTest.php
@@ -6,11 +6,9 @@
 
 use DateTimeImmutable;
 use PHPUnit\Framework\TestCase;
-use SimpleSAML\SOAP\Constants as SOAP;
 use SimpleSAML\WSSecurity\XML\wst\Lifetime;
 use SimpleSAML\WSSecurity\XML\wsu\Created;
 use SimpleSAML\WSSecurity\XML\wsu\Expires;
-use SimpleSAML\XML\Attribute as XMLAttribute;
 use SimpleSAML\XML\DOMDocumentFactory;
 use SimpleSAML\XML\TestUtils\SchemaValidationTestTrait;
 use SimpleSAML\XML\TestUtils\SerializableElementTestTrait;