diff --git a/Cargo.lock b/Cargo.lock
index b110933b1..4e851d537 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -2846,9 +2846,9 @@ dependencies = [
 
 [[package]]
 name = "pyo3-log"
-version = "0.8.4"
+version = "0.8.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c09c2b349b6538d8a73d436ca606dab6ce0aaab4dad9e6b7bdd57a4f556c3bc3"
+checksum = "f47b0777feb17f61eea78667d61103758b243a871edc09a7786500a50467b605"
 dependencies = [
  "arc-swap",
  "log",
diff --git a/crates/voicevox_core_python_api/Cargo.toml b/crates/voicevox_core_python_api/Cargo.toml
index 3f5fb3594..f2293b94c 100644
--- a/crates/voicevox_core_python_api/Cargo.toml
+++ b/crates/voicevox_core_python_api/Cargo.toml
@@ -16,7 +16,7 @@ log = "0.4.17"
 once_cell.workspace = true
 pyo3 = { version = "0.19.2", features = ["abi3-py38", "extension-module"] }
 pyo3-asyncio = { version = "0.19.0", features = ["tokio-runtime"] }
-pyo3-log = "0.8.4"
+pyo3-log = "=0.8.3" # https://github.com/VOICEVOX/voicevox_core/pull/664#issuecomment-1783801948
 serde.workspace = true
 serde_json.workspace = true
 tokio.workspace = true