diff --git a/lib/Command/AccountDelete.php b/lib/Command/AccountDelete.php
index 0877edc2..aaad6d9e 100644
--- a/lib/Command/AccountDelete.php
+++ b/lib/Command/AccountDelete.php
@@ -63,7 +63,7 @@ class AccountDelete extends Base {
 		$this->configService = $configService;
 	}
 
-	protected function configure() {
+	protected function configure(): void {
 		parent::configure();
 		$this->setName('social:account:delete')
 			 ->addArgument('account', InputArgument::REQUIRED, 'Social Local Account')
diff --git a/lib/Db/ActionsRequest.php b/lib/Db/ActionsRequest.php
index 8fd6130b..4795c76d 100644
--- a/lib/Db/ActionsRequest.php
+++ b/lib/Db/ActionsRequest.php
@@ -157,7 +157,7 @@ class ActionsRequest extends ActionsRequestBuilder {
 		$qb = $this->getActionsDeleteSql();
 		$qb->limitToDBField('actor_id_prim', $qb->prim($actorId));
 
-		$qb->execute();
+		$qb->executeStatement();
 	}
 
 
@@ -168,6 +168,6 @@ class ActionsRequest extends ActionsRequestBuilder {
 
 		$qb->limitToDBField('actor_id_prim', $qb->prim($actorId));
 
-		$qb->execute();
+		$qb->executeStatement();
 	}
 }
diff --git a/lib/Db/CacheDocumentsRequest.php b/lib/Db/CacheDocumentsRequest.php
index c435f9d7..88fb20f8 100644
--- a/lib/Db/CacheDocumentsRequest.php
+++ b/lib/Db/CacheDocumentsRequest.php
@@ -242,7 +242,7 @@ class CacheDocumentsRequest extends CacheDocumentsRequestBuilder {
 		$qb->execute();
 	}
 
-	public function deleteByParent(string $parentId) {
+	public function deleteByParent(string $parentId): void {
 		$qb = $this->getCacheDocumentsDeleteSql();
 		$qb->limitToDBField('parent_id_prim', $qb->prim($parentId));
 
@@ -257,6 +257,6 @@ class CacheDocumentsRequest extends CacheDocumentsRequestBuilder {
 
 		$qb->limitToDBField('parent_id_prim', $qb->prim($actorId));
 
-		$qb->execute();
+		$qb->executeStatement();
 	}
 }
diff --git a/lib/Db/FollowsRequest.php b/lib/Db/FollowsRequest.php
index 4e6ccd00..43a7643e 100644
--- a/lib/Db/FollowsRequest.php
+++ b/lib/Db/FollowsRequest.php
@@ -307,7 +307,7 @@ class FollowsRequest extends FollowsRequestBuilder {
 	 * @param string $actorId
 	 * @param Person $new
 	 */
-	public function moveAccountFollowers(string $actorId, Person $new) {
+	public function moveAccountFollowers(string $actorId, Person $new): void {
 		$qb = $this->getFollowsUpdateSql();
 		$qb->set('object_id', $qb->createNamedParameter($new->getId()))
 		   ->set('object_id_prim', $qb->createNamedParameter($qb->prim($new->getId())))
@@ -324,7 +324,7 @@ class FollowsRequest extends FollowsRequestBuilder {
 	 * @param string $actorId
 	 * @param Person $new
 	 */
-	public function moveAccountFollowing(string $actorId, Person $new) {
+	public function moveAccountFollowing(string $actorId, Person $new): void {
 		$qb = $this->getFollowsUpdateSql();
 		$qb->set('actor_id', $qb->createNamedParameter($new->getId()))
 		   ->set('actor_id_prim', $qb->createNamedParameter($qb->prim($new->getId())));
diff --git a/lib/Db/RequestQueueRequest.php b/lib/Db/RequestQueueRequest.php
index 1a637fb6..7ee48257 100644
--- a/lib/Db/RequestQueueRequest.php
+++ b/lib/Db/RequestQueueRequest.php
@@ -200,7 +200,7 @@ class RequestQueueRequest extends RequestQueueRequestBuilder {
 		$qb->executeStatement();
 	}
 
-	public function deleteByAuthor(string $actorId) {
+	public function deleteByAuthor(string $actorId): void {
 		$qb = $this->getRequestQueueDeleteSql();
 		$qb->limitToDBField('author_prim', $qb->prim($actorId));
 
diff --git a/lib/Db/StreamRequest.php b/lib/Db/StreamRequest.php
index 6bf43db8..e143fdd7 100644
--- a/lib/Db/StreamRequest.php
+++ b/lib/Db/StreamRequest.php
@@ -798,7 +798,7 @@ class StreamRequest extends StreamRequestBuilder {
 		   ->set('attributed_to_prim', $qb->createNamedParameter($qb->prim($newId)));
 		$qb->limitToAttributedTo($actorId, true);
 
-		$qb->execute();
+		$qb->executeStatement();
 	}