diff --git a/packages/opentelemetry-instrumentation-langchain/opentelemetry/instrumentation/langchain/__init__.py b/packages/opentelemetry-instrumentation-langchain/opentelemetry/instrumentation/langchain/__init__.py
index 709cd50cb..b27578ed0 100644
--- a/packages/opentelemetry-instrumentation-langchain/opentelemetry/instrumentation/langchain/__init__.py
+++ b/packages/opentelemetry-instrumentation-langchain/opentelemetry/instrumentation/langchain/__init__.py
@@ -37,17 +37,11 @@
 _instruments = ("langchain >= 0.0.346", "langchain-core > 0.1.0")
 
 WRAPPED_METHODS = [
-    {
-        "package": "langchain.schema.runnable",
-        "class": "RunnableSequence",
-        "is_callback": True,
-        "kind": TraceloopSpanKindValues.TOOL.value,
-    },
     {
         "package": "langchain.chains.llm",
         "class": "LLMChain",
         "is_callback": True,
-        "kind": TraceloopSpanKindValues.TOOL.value,
+        "kind": TraceloopSpanKindValues.TASK.value,
     },
     {
         "package": "langchain.chains.base",
@@ -59,7 +53,7 @@
         "package": "langchain.chains",
         "class": "SequentialChain",
         "is_callback": True,
-        "kind": TraceloopSpanKindValues.TOOL.value,
+        "kind": TraceloopSpanKindValues.WORKFLOW.value,
     },
     {
         "package": "langchain.agents",
@@ -127,6 +121,20 @@
         "method": "ainvoke",
         "wrapper": atask_wrapper,
     },
+    {
+        "package": "langchain.schema.runnable",
+        "object": "RunnableSequence",
+        "method": "invoke",
+        "span_name": "langchain.workflow",
+        "wrapper": workflow_wrapper,
+    },
+    {
+        "package": "langchain.schema.runnable",
+        "object": "RunnableSequence",
+        "method": "ainvoke",
+        "span_name": "langchain.workflow",
+        "wrapper": aworkflow_wrapper,
+    },
     {
         "package": "langchain_core.language_models.llms",
         "object": "LLM",
diff --git a/packages/opentelemetry-instrumentation-langchain/opentelemetry/instrumentation/langchain/callback_wrapper.py b/packages/opentelemetry-instrumentation-langchain/opentelemetry/instrumentation/langchain/callback_wrapper.py
index 2599f24ad..1b69fa56b 100644
--- a/packages/opentelemetry-instrumentation-langchain/opentelemetry/instrumentation/langchain/callback_wrapper.py
+++ b/packages/opentelemetry-instrumentation-langchain/opentelemetry/instrumentation/langchain/callback_wrapper.py
@@ -1,23 +1,24 @@
 import json
 from typing import Any, Dict
-from uuid import UUID
 
-from langchain.schema.runnable import RunnableSequence
 from langchain_core.callbacks import BaseCallbackHandler
-from opentelemetry import context as context_api
-from opentelemetry.trace import set_span_in_context, Tracer
 from opentelemetry.instrumentation.utils import _SUPPRESS_INSTRUMENTATION_KEY
 from opentelemetry.semconv.ai import SpanAttributes
+from opentelemetry.trace import set_span_in_context, Tracer
+from opentelemetry.trace.span import Span
+
+from opentelemetry import context as context_api
 from opentelemetry.instrumentation.langchain.utils import (
     _with_tracer_wrapper,
 )
 
 
 class CustomJsonEncode(json.JSONEncoder):
-    def default(self, o):
-        if isinstance(o, UUID):
+    def default(self, o: Any) -> str:
+        try:
+            return super().default(o)
+        except TypeError:
             return str(o)
-        return super().default(o)
 
 
 def get_name(to_wrap, instance) -> str:
@@ -35,18 +36,14 @@ def callback_wrapper(tracer, to_wrap, wrapped, instance, args, kwargs):
     kind = get_kind(to_wrap)
     name = get_name(to_wrap, instance)
     cb = SyncSpanCallbackHandler(tracer, name, kind)
-    if isinstance(instance, RunnableSequence):
-        # This does not work
-        instance = instance.with_config(callbacks=[cb, ])
+    if "callbacks" in kwargs:
+        if not any(isinstance(c, SyncSpanCallbackHandler) for c in kwargs["callbacks"]):
+            # Avoid adding the same callback twice, e.g. SequentialChain is also a Chain
+            kwargs["callbacks"].append(cb)
     else:
-        if "callbacks" in kwargs:
-            if not any(isinstance(c, SyncSpanCallbackHandler) for c in kwargs["callbacks"]):
-                # Avoid adding the same callback twice, e.g. SequentialChain is also a Chain
-                kwargs["callbacks"].append(cb)
-        else:
-            kwargs["callbacks"] = [
-                cb,
-            ]
+        kwargs["callbacks"] = [
+            cb,
+        ]
     return wrapped(*args, **kwargs)
 
 
@@ -55,7 +52,7 @@ def __init__(self, tracer: Tracer, name: str, kind: str) -> None:
         self.tracer = tracer
         self.name = name
         self.kind = kind
-        self.span = None
+        self.span: Span
 
     def _create_span(self) -> None:
         self.span = self.tracer.start_span(self.name)
@@ -68,6 +65,7 @@ def _create_span(self) -> None:
     def on_chain_start(
         self, serialized: Dict[str, Any], inputs: Dict[str, Any], **kwargs: Any
     ) -> None:
+        """Run when chain starts running."""
         self._create_span()
         self.span.set_attribute(
             SpanAttributes.TRACELOOP_ENTITY_INPUT,
@@ -75,6 +73,7 @@ def on_chain_start(
         )
 
     def on_chain_end(self, outputs: Dict[str, Any], **kwargs: Any) -> None:
+        """Run when chain ends running."""
         self.span.set_attribute(
             SpanAttributes.TRACELOOP_ENTITY_OUTPUT,
             json.dumps({"outputs": outputs, "kwargs": kwargs}, cls=CustomJsonEncode),
@@ -84,6 +83,7 @@ def on_chain_end(self, outputs: Dict[str, Any], **kwargs: Any) -> None:
     def on_tool_start(
         self, serialized: Dict[str, Any], input_str: str, **kwargs: Any
     ) -> None:
+        """Run when tool starts running."""
         self._create_span()
         self.span.set_attribute(
             SpanAttributes.TRACELOOP_ENTITY_INPUT,
@@ -93,6 +93,7 @@ def on_tool_start(
         )
 
     def on_tool_end(self, output: Any, **kwargs: Any) -> None:
+        """Run when tool ends running."""
         self.span.set_attribute(
             SpanAttributes.TRACELOOP_ENTITY_OUTPUT,
             json.dumps({"output": output, "kwargs": kwargs}, cls=CustomJsonEncode),
diff --git a/packages/opentelemetry-instrumentation-langchain/tests/test_chains.py b/packages/opentelemetry-instrumentation-langchain/tests/test_chains.py
index ab1009d84..52bcd2359 100644
--- a/packages/opentelemetry-instrumentation-langchain/tests/test_chains.py
+++ b/packages/opentelemetry-instrumentation-langchain/tests/test_chains.py
@@ -45,6 +45,5 @@ def test_sequential_chain(exporter):
         "LLMChain.langchain.task",
         "openai.completion",
         "LLMChain.langchain.task",
-        "SequentialChain.langchain.task",
         "SequentialChain.langchain.workflow",
     ] == [span.name for span in spans]