diff --git a/binding/Cargo.lock b/binding/Cargo.lock
index badcbb7..56223da 100644
--- a/binding/Cargo.lock
+++ b/binding/Cargo.lock
@@ -20,9 +20,9 @@ dependencies = [
 
 [[package]]
 name = "csbindgen"
-version = "1.8.0"
+version = "1.9.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ec4389148dd244779fef66e4d3fbb5620cedcd30b89acd3fad9231b895adf544"
+checksum = "cf70eb656f35e0e6956cbde31c66431c53d8a546823489719099c71525767a9c"
 dependencies = [
  "regex",
  "syn",
diff --git a/binding/Cargo.toml b/binding/Cargo.toml
index a938f84..f24da7a 100644
--- a/binding/Cargo.toml
+++ b/binding/Cargo.toml
@@ -8,4 +8,4 @@ edition = "2021"
 [dependencies]
 
 [build-dependencies]
-csbindgen = "1.8.0"
+csbindgen = "1.9.1"
diff --git a/src/VoicevoxCoreSharp.Core.Unity/Packages/VoicevoxCoreSharp.Core.Unity/Runtime/Script/Native/CoreUnsafe.g.cs b/src/VoicevoxCoreSharp.Core.Unity/Packages/VoicevoxCoreSharp.Core.Unity/Runtime/Script/Native/CoreUnsafe.g.cs
index 72b307b..51f2321 100644
--- a/src/VoicevoxCoreSharp.Core.Unity/Packages/VoicevoxCoreSharp.Core.Unity/Runtime/Script/Native/CoreUnsafe.g.cs
+++ b/src/VoicevoxCoreSharp.Core.Unity/Packages/VoicevoxCoreSharp.Core.Unity/Runtime/Script/Native/CoreUnsafe.g.cs
@@ -289,4 +289,3 @@ internal enum VoicevoxUserDictWordType : int
 
 
 }
-    
\ No newline at end of file
diff --git a/src/VoicevoxCoreSharp.Core/Native/CoreUnsafe.g.cs b/src/VoicevoxCoreSharp.Core/Native/CoreUnsafe.g.cs
index 72b307b..51f2321 100644
--- a/src/VoicevoxCoreSharp.Core/Native/CoreUnsafe.g.cs
+++ b/src/VoicevoxCoreSharp.Core/Native/CoreUnsafe.g.cs
@@ -289,4 +289,3 @@ internal enum VoicevoxUserDictWordType : int
 
 
 }
-    
\ No newline at end of file