diff --git a/Cargo.lock b/Cargo.lock
index 6222c0f39..df10b409e 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -2514,7 +2514,7 @@ checksum = "624a8340c38c1b80fd549087862da4ba43e08858af025b236e509b6649fc13d5"
 [[package]]
 name = "open_jtalk"
 version = "0.1.25"
-source = "git+https://github.com/VOICEVOX/open_jtalk-rs.git?rev=70c76bb54522830e92803038191bf533ba68ce85#70c76bb54522830e92803038191bf533ba68ce85"
+source = "git+https://github.com/VOICEVOX/open_jtalk-rs.git?rev=e1940f3fd61a48bed5bbec8cd2645e13923b1f80#e1940f3fd61a48bed5bbec8cd2645e13923b1f80"
 dependencies = [
  "camino",
  "open_jtalk-sys",
@@ -2524,7 +2524,7 @@ dependencies = [
 [[package]]
 name = "open_jtalk-sys"
 version = "0.16.111"
-source = "git+https://github.com/VOICEVOX/open_jtalk-rs.git?rev=70c76bb54522830e92803038191bf533ba68ce85#70c76bb54522830e92803038191bf533ba68ce85"
+source = "git+https://github.com/VOICEVOX/open_jtalk-rs.git?rev=e1940f3fd61a48bed5bbec8cd2645e13923b1f80#e1940f3fd61a48bed5bbec8cd2645e13923b1f80"
 dependencies = [
  "bindgen",
  "cmake",
diff --git a/Cargo.toml b/Cargo.toml
index 21b9a0ac9..4cc54b196 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -92,7 +92,7 @@ rev = "ebb9dcb9b26ee681889b52b6db3b4f642b04a250"
 
 [workspace.dependencies.open_jtalk]
 git = "https://github.com/VOICEVOX/open_jtalk-rs.git"
-rev = "70c76bb54522830e92803038191bf533ba68ce85"
+rev = "e1940f3fd61a48bed5bbec8cd2645e13923b1f80"
 
 # FIXME: iOS対応のpull request(https://github.com/wesleywiser/process_path/pull/16)がマージされる見込みが無いため
 [workspace.dependencies.process_path]
diff --git a/crates/voicevox_core/src/engine/open_jtalk.rs b/crates/voicevox_core/src/engine/open_jtalk.rs
index 1ec737f95..88d16f381 100644
--- a/crates/voicevox_core/src/engine/open_jtalk.rs
+++ b/crates/voicevox_core/src/engine/open_jtalk.rs
@@ -181,9 +181,6 @@ pub(crate) mod blocking {
         njd: ManagedResource<Njd>,
         jpcommon: ManagedResource<JpCommon>,
     }
-
-    // FIXME: open_jtalk-rs側で宣言する
-    unsafe impl Send for Resources {}
 }
 
 pub(crate) mod tokio {