diff --git a/integrations/langfuse/src/haystack_integrations/components/others/langfuse/component.py b/integrations/langfuse/src/haystack_integrations/components/others/langfuse/component.py
index 1725e7392..d6ba93820 100644
--- a/integrations/langfuse/src/haystack_integrations/components/others/langfuse/component.py
+++ b/integrations/langfuse/src/haystack_integrations/components/others/langfuse/component.py
@@ -1,5 +1,4 @@
-from haystack import tracing, component
-
+from haystack import component, tracing
 from haystack_integrations.tracing.langfuse import LangfuseTracer
 
 from langfuse import Langfuse
@@ -14,5 +13,4 @@ def __init__(self, name: str):
 
     @component.output_types(name=str, trace_url=str)
     def run(self):
-        return {"name": self.name,
-                "trace_url": self.tracer.get_trace_url()}
+        return {"name": self.name, "trace_url": self.tracer.get_trace_url()}
diff --git a/integrations/langfuse/src/haystack_integrations/tracing/langfuse/tracer.py b/integrations/langfuse/src/haystack_integrations/tracing/langfuse/tracer.py
index 95fb053ac..826519d77 100644
--- a/integrations/langfuse/src/haystack_integrations/tracing/langfuse/tracer.py
+++ b/integrations/langfuse/src/haystack_integrations/tracing/langfuse/tracer.py
@@ -12,7 +12,7 @@ class LangfuseSpan(Span):
     def __init__(self, span: "Union[langfuse.client.StatefulSpanClient, langfuse.client.StatefulTraceClient]") -> None:
         self._span = span
         # locally cache tags
-        self._data = {}
+        self._data: Dict[str, Any] = {}
 
     def set_tag(self, key: str, value: Any) -> None:
         coerced_value = tracing_utils.coerce_tag_value(value)
@@ -106,4 +106,4 @@ def current_span(self) -> Span:
         return self._context[-1]
 
     def get_trace_url(self) -> str:
-        return self._tracer.get_trace_url()
\ No newline at end of file
+        return self._tracer.get_trace_url()
diff --git a/integrations/langfuse/tests/test_tracing.py b/integrations/langfuse/tests/test_tracing.py
index 130bbec2d..6855792f9 100644
--- a/integrations/langfuse/tests/test_tracing.py
+++ b/integrations/langfuse/tests/test_tracing.py
@@ -15,9 +15,9 @@
 
 @pytest.mark.integration
 @pytest.mark.skipif(
-        not os.environ.get("LANGFUSE_SECRET_KEY", None) and not os.environ.get("LANGFUSE_PUBLIC_KEY", None),
-        reason="Export an env var called LANGFUSE_SECRET_KEY and LANGFUSE_PUBLIC_KEY containing Langfuse credentials.",
-    )
+    not os.environ.get("LANGFUSE_SECRET_KEY", None) and not os.environ.get("LANGFUSE_PUBLIC_KEY", None),
+    reason="Export an env var called LANGFUSE_SECRET_KEY and LANGFUSE_PUBLIC_KEY containing Langfuse credentials.",
+)
 def test_tracing_integration():
 
     pipe = Pipeline()
@@ -46,9 +46,10 @@ def test_tracing_integration():
 
     try:
         # GET request with Basic Authentication on the Langfuse API
-        response = requests.get(url+uuid, auth=HTTPBasicAuth(os.environ.get("LANGFUSE_PUBLIC_KEY"),
-                                                              os.environ.get("LANGFUSE_SECRET_KEY")))
+        response = requests.get(
+            url + uuid, auth=HTTPBasicAuth(os.environ.get("LANGFUSE_PUBLIC_KEY"), os.environ.get("LANGFUSE_SECRET_KEY"))
+        )
 
         assert response.status_code == 200, f"Failed to retrieve data from Langfuse API: {response.status_code}"
     except requests.exceptions.RequestException as e:
-        assert False, f"Failed to retrieve data from Langfuse API: {e}"
\ No newline at end of file
+        assert False, f"Failed to retrieve data from Langfuse API: {e}"