diff --git a/Cargo.lock b/Cargo.lock
index 04801c9..ceeb0fd 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -136,7 +136,7 @@ dependencies = [
  "failure 0.1.5 (registry+https://github.com/rust-lang/crates.io-index)",
  "lazy_static 1.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "log 0.4.6 (registry+https://github.com/rust-lang/crates.io-index)",
- "smallvec 0.4.5 (registry+https://github.com/rust-lang/crates.io-index)",
+ "smallvec 0.6.10 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -499,11 +499,6 @@ name = "slab"
 version = "0.4.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
-[[package]]
-name = "smallvec"
-version = "0.4.5"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-
 [[package]]
 name = "smallvec"
 version = "0.6.10"
@@ -833,7 +828,6 @@ dependencies = [
 "checksum semver 0.9.0 (registry+https://github.com/rust-lang/crates.io-index)" = "1d7eb9ef2c18661902cc47e535f9bc51b78acd254da71d375c2f6720d9a40403"
 "checksum semver-parser 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)" = "388a1df253eca08550bef6c72392cfe7c30914bf41df5269b68cbd6ff8f570a3"
 "checksum slab 0.4.2 (registry+https://github.com/rust-lang/crates.io-index)" = "c111b5bd5695e56cffe5129854aa230b39c93a305372fdbb2668ca2394eea9f8"
-"checksum smallvec 0.4.5 (registry+https://github.com/rust-lang/crates.io-index)" = "f90c5e5fe535e48807ab94fc611d323935f39d4660c52b26b96446a7b33aef10"
 "checksum smallvec 0.6.10 (registry+https://github.com/rust-lang/crates.io-index)" = "ab606a9c5e214920bb66c458cd7be8ef094f813f20fe77a54cc7dbfff220d4b7"
 "checksum stable_deref_trait 1.1.1 (registry+https://github.com/rust-lang/crates.io-index)" = "dba1a27d3efae4351c8051072d619e3ade2820635c3958d826bfea39d59b54c8"
 "checksum syn 0.15.39 (registry+https://github.com/rust-lang/crates.io-index)" = "b4d960b829a55e56db167e861ddb43602c003c7be0bee1d345021703fac2fb7c"
diff --git a/lib/dnsbox-base/Cargo.toml b/lib/dnsbox-base/Cargo.toml
index e60b54e..0a3bd4c 100644
--- a/lib/dnsbox-base/Cargo.toml
+++ b/lib/dnsbox-base/Cargo.toml
@@ -12,7 +12,7 @@ dnsbox-derive = { path = "../dnsbox-derive" }
 failure = "0.1.5"
 lazy_static = "1.3.0"
 log = "0.4"
-smallvec = "0.4.4"
+smallvec = "0.6.10"
 
 [features]
 no-unsafe = []