diff --git a/langchain/chat_models/azure_openai.py b/langchain/chat_models/azure_openai.py
index 6a76d8e2cb..1020604936 100644
--- a/langchain/chat_models/azure_openai.py
+++ b/langchain/chat_models/azure_openai.py
@@ -94,7 +94,7 @@ class AzureChatOpenAI(ChatOpenAI):
             if openai_organization:
                 openai.organization = openai_organization
             if openai_proxy:
-                openai.proxy = {"http": openai_proxy, "https": openai_proxy}
+                openai.proxy = {"http": openai_proxy, "https": openai_proxy}  # type: ignore[assignment]  # noqa: E501
         except ImportError:
             raise ImportError(
                 "Could not import openai python package. "
diff --git a/langchain/chat_models/openai.py b/langchain/chat_models/openai.py
index d5cf669fe3..b30e4820d8 100644
--- a/langchain/chat_models/openai.py
+++ b/langchain/chat_models/openai.py
@@ -231,7 +231,7 @@ class ChatOpenAI(BaseChatModel):
         if openai_api_base:
             openai.api_base = openai_api_base
         if openai_proxy:
-            openai.proxy = {"http": openai_proxy, "https": openai_proxy}
+            openai.proxy = {"http": openai_proxy, "https": openai_proxy}  # type: ignore[assignment]  # noqa: E501
         try:
             values["client"] = openai.ChatCompletion
         except AttributeError:
diff --git a/langchain/embeddings/openai.py b/langchain/embeddings/openai.py
index bed2710125..1fa9916d66 100644
--- a/langchain/embeddings/openai.py
+++ b/langchain/embeddings/openai.py
@@ -186,7 +186,7 @@ class OpenAIEmbeddings(BaseModel, Embeddings):
             if openai_api_type:
                 openai.api_type = openai_api_type
             if openai_proxy:
-                openai.proxy = {"http": openai_proxy, "https": openai_proxy}
+                openai.proxy = {"http": openai_proxy, "https": openai_proxy}  # type: ignore[assignment]  # noqa: E501
             values["client"] = openai.Embedding
         except ImportError:
             raise ImportError(
diff --git a/langchain/llms/openai.py b/langchain/llms/openai.py
index e36a9b8337..bcb3ac9f69 100644
--- a/langchain/llms/openai.py
+++ b/langchain/llms/openai.py
@@ -241,7 +241,7 @@ class BaseOpenAI(BaseLLM):
             if openai_organization:
                 openai.organization = openai_organization
             if openai_proxy:
-                openai.proxy = {"http": openai_proxy, "https": openai_proxy}
+                openai.proxy = {"http": openai_proxy, "https": openai_proxy}  # type: ignore[assignment]  # noqa: E501
             values["client"] = openai.Completion
         except ImportError:
             raise ImportError(
@@ -699,7 +699,7 @@ class OpenAIChat(BaseLLM):
             if openai_organization:
                 openai.organization = openai_organization
             if openai_proxy:
-                openai.proxy = {"http": openai_proxy, "https": openai_proxy}
+                openai.proxy = {"http": openai_proxy, "https": openai_proxy}  # type: ignore[assignment]  # noqa: E501
         except ImportError:
             raise ImportError(
                 "Could not import openai python package. "