diff --git a/Cargo.lock b/Cargo.lock
index 2b06f07cf2..542b897f8a 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -1132,7 +1132,7 @@ dependencies = [
  "serde",
  "serde_derive",
  "serde_json",
- "smallvec 0.4.5",
+ "smallvec 1.4.2",
  "tempdir",
  "time 0.1.43",
 ]
@@ -4733,12 +4733,6 @@ version = "0.4.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "c111b5bd5695e56cffe5129854aa230b39c93a305372fdbb2668ca2394eea9f8"
 
-[[package]]
-name = "smallvec"
-version = "0.4.5"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f90c5e5fe535e48807ab94fc611d323935f39d4660c52b26b96446a7b33aef10"
-
 [[package]]
 name = "smallvec"
 version = "0.6.13"
diff --git a/keystore/Cargo.toml b/keystore/Cargo.toml
index c30e8f5847..bc785ed6a2 100644
--- a/keystore/Cargo.toml
+++ b/keystore/Cargo.toml
@@ -18,7 +18,7 @@ rustc-hex = "1.0"
 time = "0.1.34"
 parking_lot = "0.11.0"
 ccrypto = { package = "codechain-crypto", git = "https://github.com/CodeChain-io/rust-codechain-crypto.git", version = "0.3", tag = "v0.3.0" }
-smallvec = "0.4"
+smallvec = "1.4"
 tempdir = "0.3"
 hex = "0.4.2"