diff --git a/src/konoha/api/v1/batch_tokenization.py b/src/konoha/api/v1/batch_tokenization.py
index fd6755d..e164810 100644
--- a/src/konoha/api/v1/batch_tokenization.py
+++ b/src/konoha/api/v1/batch_tokenization.py
@@ -26,7 +26,7 @@ class TokenizeParameter(BaseModel):
 
 
 def generate_cache_key(params):
-    params = params.dict(exclude={"text", "texts"})
+    params = params.model_dump(exclude={"text", "texts"})
     return ".".join(f"{k}-{v}" for k, v in params.items())
 
 
diff --git a/src/konoha/api/v1/tokenization.py b/src/konoha/api/v1/tokenization.py
index f3e0a2b..55cefb4 100644
--- a/src/konoha/api/v1/tokenization.py
+++ b/src/konoha/api/v1/tokenization.py
@@ -26,7 +26,7 @@ class TokenizeParameter(BaseModel):
 
 
 def generate_cache_key(params):
-    params = params.dict(exclude={"text", "texts"})
+    params = params.model_dump(exclude={"text", "texts"})
     return ".".join(f"{k}-{v}" for k, v in params.items())