diff --git a/fastchat/protocol/api_protocol.py b/fastchat/protocol/api_protocol.py
index 2dc99449d..6c72c1377 100644
--- a/fastchat/protocol/api_protocol.py
+++ b/fastchat/protocol/api_protocol.py
@@ -24,7 +24,7 @@ class ModelPermission(BaseModel):
     allow_fine_tuning: bool = False
     organization: str = "*"
     group: Optional[str] = None
-    is_blocking: str = False
+    is_blocking: bool = False
 
 
 class ModelCard(BaseModel):
diff --git a/fastchat/protocol/openai_api_protocol.py b/fastchat/protocol/openai_api_protocol.py
index bb50a5ef0..990f1f804 100644
--- a/fastchat/protocol/openai_api_protocol.py
+++ b/fastchat/protocol/openai_api_protocol.py
@@ -24,7 +24,7 @@ class ModelPermission(BaseModel):
     allow_fine_tuning: bool = False
     organization: str = "*"
     group: Optional[str] = None
-    is_blocking: str = False
+    is_blocking: bool = False
 
 
 class ModelCard(BaseModel):
diff --git a/fastchat/serve/api_provider.py b/fastchat/serve/api_provider.py
index 2e967e3ef..3c168d1a6 100644
--- a/fastchat/serve/api_provider.py
+++ b/fastchat/serve/api_provider.py
@@ -1262,7 +1262,7 @@ def reka_api_stream_iter(
     for chunk in response:
         try:
             yield {"text": chunk.responses[0].chunk.content, "error_code": 0}
-        except:
+        except Exception:
             yield {
                 "text": f"**API REQUEST ERROR** ",
                 "error_code": 1,
diff --git a/fastchat/serve/monitor/monitor.py b/fastchat/serve/monitor/monitor.py
index 462e38187..92758ecc5 100644
--- a/fastchat/serve/monitor/monitor.py
+++ b/fastchat/serve/monitor/monitor.py
@@ -886,7 +886,7 @@ def get_model_name(model_key):
                 "Model"
             ].values[0]
             return model_name
-        except:
+        except (KeyError, IndexError, TypeError):
             return None
 
     combined_table = []
diff --git a/fastchat/utils.py b/fastchat/utils.py
index d3531928f..dcb2833c8 100644
--- a/fastchat/utils.py
+++ b/fastchat/utils.py
@@ -450,7 +450,7 @@ def image_moderation_request(image_bytes, endpoint, api_key):
         try:
             if response["Status"]["Code"] == 3000:
                 break
-        except:
+        except (KeyError, TypeError):
             time.sleep(0.5)
     return response