diff --git a/examples/basic_embedding.py b/examples/basic_embedding.py
index 9e29c60..69e189f 100755
--- a/examples/basic_embedding.py
+++ b/examples/basic_embedding.py
@@ -22,7 +22,7 @@
 
 from substrate import Substrate, MultiEmbedText, DeleteVectorStore, FindOrCreateVectorStore
 
-substrate = Substrate(api_key=api_key, timeout=60 * 5, base_url="https://kube-dev.substrate.run/ray/stable")
+substrate = Substrate(api_key=api_key, timeout=60 * 5)
 
 old_collection = DeleteVectorStore(collection_name="substrate_api_v2", model="jina-v2")
 
diff --git a/examples/basic_rag.py b/examples/basic_rag.py
index 8eb233a..4bb777c 100644
--- a/examples/basic_rag.py
+++ b/examples/basic_rag.py
@@ -14,7 +14,7 @@
 
 from substrate import Substrate, QueryVectorStore, FindOrCreateVectorStore, sb
 
-substrate = Substrate(api_key=api_key, timeout=60 * 5, base_url="https://kube-dev.substrate.run/ray/stable")
+substrate = Substrate(api_key=api_key, timeout=60 * 5)
 
 prompt_text = input("Enter a prompt: ")