diff --git a/README.md b/README.md
index 223e632bc..efb3c4600 100644
--- a/README.md
+++ b/README.md
@@ -105,18 +105,19 @@ print(response)
 ```
 
 ## Logging Observability ([Docs](https://docs.litellm.ai/docs/observability/callbacks))
-LiteLLM exposes pre defined callbacks to send data to LLMonitor, Langfuse, Helicone, Promptlayer, Traceloop, Slack
+LiteLLM exposes pre defined callbacks to send data to Langfuse, LLMonitor, Helicone, Promptlayer, Traceloop, Slack
 ```python
 from litellm import completion
 
 ## set env variables for logging tools
-os.environ["PROMPTLAYER_API_KEY"] = "your-promptlayer-key"
+os.environ["LANGFUSE_PUBLIC_KEY"] = ""
+os.environ["LANGFUSE_SECRET_KEY"] = ""
 os.environ["LLMONITOR_APP_ID"] = "your-llmonitor-app-id"
 
 os.environ["OPENAI_API_KEY"]
 
 # set callbacks
-litellm.success_callback = ["promptlayer", "llmonitor"] # log input/output to promptlayer, llmonitor, supabase
+litellm.success_callback = ["langfuse", "llmonitor"] # log input/output to langfuse, llmonitor, supabase
 
 #openai call
 response = completion(model="gpt-3.5-turbo", messages=[{"role": "user", "content": "Hi 👋 - i'm openai"}])