diff --git a/api/core/model_runtime/docs/zh_Hans/customizable_model_scale_out.md b/api/core/model_runtime/docs/zh_Hans/customizable_model_scale_out.md
index 1a138861c1..97b3720e8c 100644
--- a/api/core/model_runtime/docs/zh_Hans/customizable_model_scale_out.md
+++ b/api/core/model_runtime/docs/zh_Hans/customizable_model_scale_out.md
@@ -260,7 +260,7 @@ provider_credential_schema:
             fetch_from=FetchFrom.CUSTOMIZABLE_MODEL,
             model_type=model_type,
             model_properties={ 
-                'mode':  ModelType.LLM,
+                ModelPropertyKey.MODE:  ModelType.LLM,
             },
             parameter_rules=rules
         )
diff --git a/api/core/model_runtime/model_providers/azure_openai/_constant.py b/api/core/model_runtime/model_providers/azure_openai/_constant.py
index 3ffcd96769..f9d94c9612 100644
--- a/api/core/model_runtime/model_providers/azure_openai/_constant.py
+++ b/api/core/model_runtime/model_providers/azure_openai/_constant.py
@@ -40,8 +40,8 @@ LLM_BASE_MODELS = [
             ],
             fetch_from=FetchFrom.CUSTOMIZABLE_MODEL,
             model_properties={
-                'mode': LLMMode.CHAT.value,
-                'context_size': 4096,
+                ModelPropertyKey.MODE: LLMMode.CHAT.value,
+                ModelPropertyKey.CONTEXT_SIZE: 4096,
             },
             parameter_rules=[
                 ParameterRule(
@@ -84,8 +84,8 @@ LLM_BASE_MODELS = [
             ],
             fetch_from=FetchFrom.CUSTOMIZABLE_MODEL,
             model_properties={
-                'mode': LLMMode.CHAT.value,
-                'context_size': 16385,
+                ModelPropertyKey.MODE: LLMMode.CHAT.value,
+                ModelPropertyKey.CONTEXT_SIZE: 16385,
             },
             parameter_rules=[
                 ParameterRule(
@@ -128,8 +128,8 @@ LLM_BASE_MODELS = [
             ],
             fetch_from=FetchFrom.CUSTOMIZABLE_MODEL,
             model_properties={
-                'mode': LLMMode.CHAT.value,
-                'context_size': 8192,
+                ModelPropertyKey.MODE: LLMMode.CHAT.value,
+                ModelPropertyKey.CONTEXT_SIZE: 8192,
             },
             parameter_rules=[
                 ParameterRule(
@@ -202,8 +202,8 @@ LLM_BASE_MODELS = [
             ],
             fetch_from=FetchFrom.CUSTOMIZABLE_MODEL,
             model_properties={
-                'mode': LLMMode.CHAT.value,
-                'context_size': 32768,
+                ModelPropertyKey.MODE: LLMMode.CHAT.value,
+                ModelPropertyKey.CONTEXT_SIZE: 32768,
             },
             parameter_rules=[
                 ParameterRule(
@@ -276,8 +276,8 @@ LLM_BASE_MODELS = [
             ],
             fetch_from=FetchFrom.CUSTOMIZABLE_MODEL,
             model_properties={
-                'mode': LLMMode.CHAT.value,
-                'context_size': 128000,
+                ModelPropertyKey.MODE: LLMMode.CHAT.value,
+                ModelPropertyKey.CONTEXT_SIZE: 128000,
             },
             parameter_rules=[
                 ParameterRule(
@@ -349,8 +349,8 @@ LLM_BASE_MODELS = [
             ],
             fetch_from=FetchFrom.CUSTOMIZABLE_MODEL,
             model_properties={
-                'mode': LLMMode.CHAT.value,
-                'context_size': 128000,
+                ModelPropertyKey.MODE: LLMMode.CHAT.value,
+                ModelPropertyKey.CONTEXT_SIZE: 128000,
             },
             parameter_rules=[
                 ParameterRule(
@@ -419,8 +419,8 @@ LLM_BASE_MODELS = [
             model_type=ModelType.LLM,
             fetch_from=FetchFrom.CUSTOMIZABLE_MODEL,
             model_properties={
-                'mode': LLMMode.COMPLETION.value,
-                'context_size': 4096,
+                ModelPropertyKey.MODE: LLMMode.COMPLETION.value,
+                ModelPropertyKey.CONTEXT_SIZE: 4096,
             },
             parameter_rules=[
                 ParameterRule(
@@ -459,8 +459,8 @@ LLM_BASE_MODELS = [
             model_type=ModelType.LLM,
             fetch_from=FetchFrom.CUSTOMIZABLE_MODEL,
             model_properties={
-                'mode': LLMMode.COMPLETION.value,
-                'context_size': 4096,
+                ModelPropertyKey.MODE: LLMMode.COMPLETION.value,
+                ModelPropertyKey.CONTEXT_SIZE: 4096,
             },
             parameter_rules=[
                 ParameterRule(
diff --git a/api/core/model_runtime/model_providers/huggingface_hub/llm/llm.py b/api/core/model_runtime/model_providers/huggingface_hub/llm/llm.py
index 33df2ec340..8f4b9d903c 100644
--- a/api/core/model_runtime/model_providers/huggingface_hub/llm/llm.py
+++ b/api/core/model_runtime/model_providers/huggingface_hub/llm/llm.py
@@ -10,7 +10,7 @@ from core.model_runtime.entities.llm_entities import LLMResult, LLMResultChunk,
 from core.model_runtime.entities.message_entities import PromptMessage, PromptMessageTool, AssistantPromptMessage, \
     UserPromptMessage, SystemPromptMessage
 from core.model_runtime.entities.model_entities import ParameterRule, DefaultParameterName, AIModelEntity, ModelType, \
-    FetchFrom
+    FetchFrom, ModelPropertyKey
 from core.model_runtime.errors.validate import CredentialsValidateFailedError
 from core.model_runtime.model_providers.__base.large_language_model import LargeLanguageModel
 from core.model_runtime.model_providers.huggingface_hub._common import _CommonHuggingfaceHub
@@ -97,7 +97,7 @@ class HuggingfaceHubLargeLanguageModel(_CommonHuggingfaceHub, LargeLanguageModel
             fetch_from=FetchFrom.CUSTOMIZABLE_MODEL,
             model_type=ModelType.LLM,
             model_properties={
-                'mode': LLMMode.COMPLETION.value
+                ModelPropertyKey.MODE: LLMMode.COMPLETION.value
             },
             parameter_rules=self._get_customizable_model_parameter_rules()
         )
diff --git a/api/requirements.txt b/api/requirements.txt
index faf8ea06a7..0780ef3644 100644
--- a/api/requirements.txt
+++ b/api/requirements.txt
@@ -57,8 +57,8 @@ qdrant-client==1.6.4
 cohere~=4.32
 pyyaml~=6.0.1
 numpy~=1.25.2
-unstructured~=0.10.27
 unstructured[docx,pptx,msg,md,ppt]~=0.10.27
 bs4~=0.0.1
 markdown~=3.5.1
-google-generativeai~=0.3.2
\ No newline at end of file
+google-generativeai~=0.3.2
+httpx[socks]~=0.24.1
\ No newline at end of file