diff --git a/src/giskard_hub/resources/conversations.py b/src/giskard_hub/resources/conversations.py
index 6dfe5d6..2d25f80 100644
--- a/src/giskard_hub/resources/conversations.py
+++ b/src/giskard_hub/resources/conversations.py
@@ -69,10 +69,7 @@ def update(
         )
 
     def delete(self, conversation_id: str | List[str]) -> None:
-        if isinstance(conversation_id, str):
-            conversation_id = [conversation_id]
-
-        return self._client.delete("/conversations", json=conversation_id)
+        return self._client.delete("/conversations", params={"conversation_ids": conversation_id})
 
     def list(self, dataset_id: str) -> List[Conversation]:
         data = self._client.get(f"/datasets/{dataset_id}/conversations?limit=100000")
diff --git a/src/giskard_hub/resources/datasets.py b/src/giskard_hub/resources/datasets.py
index f527285..f4c1941 100644
--- a/src/giskard_hub/resources/datasets.py
+++ b/src/giskard_hub/resources/datasets.py
@@ -40,10 +40,7 @@ def update(
         )
 
     def delete(self, dataset_id: str | List[str]) -> None:
-        if isinstance(dataset_id, str):
-            dataset_id = [dataset_id]
-
-        self._client.delete("/datasets", json=dataset_id)
+        self._client.delete("/datasets", params={"datasets_ids": dataset_id})
 
     def list(self, project_id: str) -> List[Dataset]:
         return self._client.get(
diff --git a/src/giskard_hub/resources/evaluations.py b/src/giskard_hub/resources/evaluations.py
index 9aff482..fd0ae55 100644
--- a/src/giskard_hub/resources/evaluations.py
+++ b/src/giskard_hub/resources/evaluations.py
@@ -70,11 +70,8 @@ def create_local(
             cast_to=EvaluationRun,
         )
 
-    def delete(self, project_id: str | List[str]):
-        if isinstance(project_id, str):
-            project_id = [project_id]
-
-        return self._client.delete("/executions", json=project_id)
+    def delete(self, execution_id: str | List[str]):
+        return self._client.delete("/executions", params={"execution_ids": execution_id})
 
     def list(self, project_id: str):
         return self._client.get(
diff --git a/src/giskard_hub/resources/models.py b/src/giskard_hub/resources/models.py
index f996f3c..324c1bb 100644
--- a/src/giskard_hub/resources/models.py
+++ b/src/giskard_hub/resources/models.py
@@ -72,10 +72,7 @@ def update(
         )
 
     def delete(self, model_id: str | List[str]) -> None:
-        if isinstance(model_id, str):
-            model_id = [model_id]
-
-        self._client.delete("/models", json=model_id)
+        self._client.delete("/models", params={"model_ids": model_id})
 
     def list(self, project_id: str) -> List[Model]:
         return self._client.get(
diff --git a/src/giskard_hub/resources/projects.py b/src/giskard_hub/resources/projects.py
index 38dc569..ec47e20 100644
--- a/src/giskard_hub/resources/projects.py
+++ b/src/giskard_hub/resources/projects.py
@@ -49,10 +49,7 @@ def update(
         )
 
     def delete(self, project_id: str | List[str]):
-        if isinstance(project_id, str):
-            project_id = [project_id]
-
-        return self._client.delete("/projects", json=project_id)
+        return self._client.delete("/projects", params={"project_ids": project_id})
 
     def list(self):
         return self._client.get("/projects", cast_to=Project)