diff --git a/Cargo.lock b/Cargo.lock
index bbc8a109e06..8a542a6362a 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -549,7 +549,6 @@ dependencies = [
  "ckb-occupied-capacity",
  "enum-display-derive",
  "failure",
- "quote 1.0.7",
 ]
 
 [[package]]
diff --git a/devtools/ci/check-cargotoml.sh b/devtools/ci/check-cargotoml.sh
index 03fddef8634..c3c573725a1 100755
--- a/devtools/ci/check-cargotoml.sh
+++ b/devtools/ci/check-cargotoml.sh
@@ -137,7 +137,7 @@ function check_dependencies_for() {
             fi
             if [ "${depcnt}" -eq 0 ]; then
                 case "${dependency}" in
-                    phf|quote)
+                    phf)
                         # We cann't handle these crates.
                         printf "Warn: [%s::%s] in <%s>\n" \
                             "${deptype}" "${dependency}" "${pkgroot}"
diff --git a/error/Cargo.toml b/error/Cargo.toml
index 792a394fb86..e6c0706e765 100644
--- a/error/Cargo.toml
+++ b/error/Cargo.toml
@@ -14,4 +14,3 @@ repository = "https://github.com/nervosnetwork/ckb"
 failure = "0.1.5"
 ckb-occupied-capacity = { path = "../util/occupied-capacity", version = "= 0.37.0-pre" }
 enum-display-derive = "0.1.0"
-quote = "1.0.3"
diff --git a/util/multisig/src/error.rs b/util/multisig/src/error.rs
index 6159fd6789c..d0ebd7acbbe 100644
--- a/util/multisig/src/error.rs
+++ b/util/multisig/src/error.rs
@@ -19,7 +19,7 @@ pub enum ErrorKind {
     /// The verified signatures count is less than the threshold.
     #[fail(display = "Failed to meet threshold {:?}.", _0)]
     Threshold {
-        /// The required count of valid signatures.  
+        /// The required count of valid signatures.
         threshold: usize,
         /// The actual count of valid signatures.
         pass_sigs: usize,