diff --git a/libs/core/langchain_core/language_models/base.py b/libs/core/langchain_core/language_models/base.py
index 5e60c890a47..ab3fbd03015 100644
--- a/libs/core/langchain_core/language_models/base.py
+++ b/libs/core/langchain_core/language_models/base.py
@@ -375,7 +375,7 @@ class BaseLanguageModel(
         Returns:
             The sum of the number of tokens across the messages.
         """
-        return sum([self.get_num_tokens(get_buffer_string([m])) for m in messages])
+        return sum(self.get_num_tokens(get_buffer_string([m])) for m in messages)
 
     @classmethod
     def _all_required_field_names(cls) -> set:
diff --git a/libs/core/langchain_core/language_models/llms.py b/libs/core/langchain_core/language_models/llms.py
index 7fd47e627d7..302a50aa095 100644
--- a/libs/core/langchain_core/language_models/llms.py
+++ b/libs/core/langchain_core/language_models/llms.py
@@ -1387,10 +1387,10 @@ class BaseLLM(BaseLanguageModel[str], ABC):
         prompt_dict = self.dict()
 
         if save_path.suffix == ".json":
-            with open(file_path, "w") as f:
+            with open(file_path, "w", encoding="utf-8") as f:
                 json.dump(prompt_dict, f, indent=4)
         elif save_path.suffix.endswith((".yaml", ".yml")):
-            with open(file_path, "w") as f:
+            with open(file_path, "w", encoding="utf-8") as f:
                 yaml.dump(prompt_dict, f, default_flow_style=False)
         else:
             msg = f"{save_path} must be json or yaml"
diff --git a/libs/core/langchain_core/prompts/base.py b/libs/core/langchain_core/prompts/base.py
index e399974a5b0..3331e4783cd 100644
--- a/libs/core/langchain_core/prompts/base.py
+++ b/libs/core/langchain_core/prompts/base.py
@@ -359,10 +359,10 @@ class BasePromptTemplate(
         directory_path.mkdir(parents=True, exist_ok=True)
 
         if save_path.suffix == ".json":
-            with open(file_path, "w") as f:
+            with open(file_path, "w", encoding="utf-8") as f:
                 json.dump(prompt_dict, f, indent=4)
         elif save_path.suffix.endswith((".yaml", ".yml")):
-            with open(file_path, "w") as f:
+            with open(file_path, "w", encoding="utf-8") as f:
                 yaml.dump(prompt_dict, f, default_flow_style=False)
         else:
             msg = f"{save_path} must be json or yaml"
diff --git a/libs/core/langchain_core/prompts/chat.py b/libs/core/langchain_core/prompts/chat.py
index 111aed89b3c..ab52c0d62d2 100644
--- a/libs/core/langchain_core/prompts/chat.py
+++ b/libs/core/langchain_core/prompts/chat.py
@@ -588,7 +588,7 @@ class _StringImageMessagePromptTemplate(BaseMessagePromptTemplate):
         Returns:
             A new instance of this class.
         """
-        with open(str(template_file)) as f:
+        with open(str(template_file), encoding="utf-8") as f:
             template = f.read()
         return cls.from_template(template, input_variables=input_variables, **kwargs)
 
diff --git a/libs/core/langchain_core/prompts/loading.py b/libs/core/langchain_core/prompts/loading.py
index 3d65f8323f1..4c67b5486fe 100644
--- a/libs/core/langchain_core/prompts/loading.py
+++ b/libs/core/langchain_core/prompts/loading.py
@@ -53,7 +53,7 @@ def _load_template(var_name: str, config: dict) -> dict:
         template_path = Path(config.pop(f"{var_name}_path"))
         # Load the template.
         if template_path.suffix == ".txt":
-            with open(template_path) as f:
+            with open(template_path, encoding="utf-8") as f:
                 template = f.read()
         else:
             raise ValueError
@@ -67,7 +67,7 @@ def _load_examples(config: dict) -> dict:
     if isinstance(config["examples"], list):
         pass
     elif isinstance(config["examples"], str):
-        with open(config["examples"]) as f:
+        with open(config["examples"], encoding="utf-8") as f:
             if config["examples"].endswith(".json"):
                 examples = json.load(f)
             elif config["examples"].endswith((".yaml", ".yml")):
diff --git a/libs/core/langchain_core/rate_limiters.py b/libs/core/langchain_core/rate_limiters.py
index 043e54cc38f..79bd054bc3a 100644
--- a/libs/core/langchain_core/rate_limiters.py
+++ b/libs/core/langchain_core/rate_limiters.py
@@ -248,7 +248,7 @@ class InMemoryRateLimiter(BaseRateLimiter):
         if not blocking:
             return self._consume()
 
-        while not self._consume():
+        while not self._consume():  # noqa: ASYNC110
             await asyncio.sleep(self.check_every_n_seconds)
         return True
 
diff --git a/libs/core/tests/unit_tests/runnables/test_tracing_interops.py b/libs/core/tests/unit_tests/runnables/test_tracing_interops.py
index af6a5e84ce9..60683d33fc7 100644
--- a/libs/core/tests/unit_tests/runnables/test_tracing_interops.py
+++ b/libs/core/tests/unit_tests/runnables/test_tracing_interops.py
@@ -314,7 +314,7 @@ async def test_runnable_sequence_parallel_trace_nesting(method: str) -> None:
         "other_thing": "RunnableParallel<chain_result,other_thing>",
         "after": "RunnableSequence",
     }
-    assert len(posts) == sum([1 if isinstance(n, str) else len(n) for n in name_order])
+    assert len(posts) == sum(1 if isinstance(n, str) else len(n) for n in name_order)
     prev_dotted_order = None
     dotted_order_map = {}
     id_map = {}