diff --git a/Cargo.lock b/Cargo.lock
index 1b60ef26..c9bbc00b 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -265,9 +265,9 @@ checksum = "ea221b5284a47e40033bf9b66f35f984ec0ea2931eb03505246cd27a963f981b"
 
 [[package]]
 name = "crates-index"
-version = "0.16.2"
+version = "0.16.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "7f24823d553339d125040d989d2a593a01b034fe5ac17714423bcd2c3d168878"
+checksum = "d9880def1f3f60a7774aeccc2965f4609292dbf49dbfab2cc1f63e474a531b2e"
 dependencies = [
  "git2",
  "glob",
@@ -1410,18 +1410,18 @@ dependencies = [
 
 [[package]]
 name = "serde"
-version = "1.0.119"
+version = "1.0.126"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "9bdd36f49e35b61d49efd8aa7fc068fd295961fd2286d0b2ee9a4c7a14e99cc3"
+checksum = "ec7505abeacaec74ae4778d9d9328fe5a5d04253220a85c4ee022239fc996d03"
 dependencies = [
  "serde_derive",
 ]
 
 [[package]]
 name = "serde_derive"
-version = "1.0.119"
+version = "1.0.126"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "552954ce79a059ddd5fd68c271592374bd15cab2274970380c000118aeffe1cd"
+checksum = "963a7dbc9895aeac7ac90e74f34a5d5261828f79df35cbed41e10189d3804d43"
 dependencies = [
  "proc-macro2",
  "quote",
@@ -1565,9 +1565,9 @@ dependencies = [
 
 [[package]]
 name = "syn"
-version = "1.0.58"
+version = "1.0.67"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "cc60a3d73ea6594cd712d830cc1f0390fd71542d8c8cd24e70cc54cdfd5e05d5"
+checksum = "6498a9efc342871f91cc2d0d694c674368b4ceb40f62b65a7a08c3792935e702"
 dependencies = [
  "proc-macro2",
  "quote",
diff --git a/Cargo.toml b/Cargo.toml
index cf2a4b2c..0ca41d4d 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -35,7 +35,7 @@ strum_macros = "0.20.1"
 strum = "0.20.0"
 dirs = "3.0.1"
 serde_derive = "1.0.118"
-crates-index = "0.16.2"
+crates-index = "0.16.6"
 semver = "0.11.0"
 xz2 = "0.1.6"
 zip = "0.5.11"