diff --git a/.github/workflows/cargo-deny.yml b/.github/workflows/cargo-deny.yml
index ac4978b9a..cf600f535 100644
--- a/.github/workflows/cargo-deny.yml
+++ b/.github/workflows/cargo-deny.yml
@@ -13,7 +13,7 @@ jobs:
       - name: Install cargo-binstall
         uses: taiki-e/install-action@cargo-binstall
       - name: Install cargo-deny
-        run: cargo binstall cargo-deny@^0.13 --no-confirm --log-level debug
+        run: cargo binstall cargo-deny@^0.14 --no-confirm --log-level debug
       - name: cargo-deny
         run: |
           if ${{ !!github.event.release }}; then
diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 3e47256f3..4ff92a84b 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -151,7 +151,8 @@ jobs:
           metadata=$(cargo metadata --format-version 1)
           version=$(
               jq -r '
-                (.workspace_members[] | select(startswith("xtask "))) as $xtask
+                .workspace_members as $workspace_members
+                  | (.packages[] | select(.name == "xtask").id | select(. as $id | $workspace_members | index($id))) as $xtask
                   | (.resolve.nodes[] | select(.id == $xtask).deps[] | select(.name == "cbindgen").pkg) as $cbindgen
                   | .packages[] | select(.id == $cbindgen).version
                 ' <<< "$metadata"
diff --git a/crates/voicevox_core/src/engine/full_context_label.rs b/crates/voicevox_core/src/engine/full_context_label.rs
index d4099a900..06cfdd0fd 100644
--- a/crates/voicevox_core/src/engine/full_context_label.rs
+++ b/crates/voicevox_core/src/engine/full_context_label.rs
@@ -177,8 +177,8 @@ pub fn mora_to_text(consonant: Option<&str>, vowel: &str) -> String {
     engine::mora2text(&mora_text).to_string()
 }
 
-// FIXME: Remove `chunk_by` module after Rust 1.77.0 is released as stable.
-use chunk_by::*;
+// FIXME: Rust 1.77の新機能導入と共にこれを消す
+#[allow(unused_imports)]
 mod chunk_by {
     // Implementations in this module were copied from
     // [Rust](https://github.com/rust-lang/rust/blob/746a58d4359786e4aebb372a30829706fa5a968f/library/core/src/slice/iter.rs).
diff --git a/rust-toolchain b/rust-toolchain
index 32a6ce3c7..79e15fd49 100644
--- a/rust-toolchain
+++ b/rust-toolchain
@@ -1 +1 @@
-1.76.0
+1.77.0