diff --git a/Cargo.lock b/Cargo.lock
index 6412636..376690c 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -135,9 +135,9 @@ checksum = "08c48aae112d48ed9f069b33538ea9e3e90aa263cfa3d1c24309612b1f7472de"
 
 [[package]]
 name = "cc"
-version = "1.0.50"
+version = "1.0.52"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "95e28fa049fda1c330bcf9d723be7663a899c4679724b34c81e9f5a326aab8cd"
+checksum = "c3d87b23d6a92cd03af510a5ade527033f6aa6fa92161e2d5863a907d4c5e31d"
 
 [[package]]
 name = "cfg-if"
@@ -373,9 +373,9 @@ dependencies = [
 
 [[package]]
 name = "libc"
-version = "0.2.68"
+version = "0.2.69"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "dea0c0405123bba743ee3f91f49b1c7cfb684eef0da0a50110f758ccf24cdff0"
+checksum = "99e85c08494b21a9054e7fe1374a732aeadaff3980b6990b94bfd3a70f690005"
 
 [[package]]
 name = "libm"
@@ -476,6 +476,12 @@ dependencies = [
  "autocfg 1.0.0",
 ]
 
+[[package]]
+name = "once_cell"
+version = "1.3.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b1c601810575c99596d4afc46f78a678c80105117c379eb3650cf99b8a21ce5b"
+
 [[package]]
 name = "opaque-debug"
 version = "0.2.3"
@@ -666,13 +672,13 @@ checksum = "7fe5bd57d1d7414c6b5ed48563a2c855d995ff777729dcd91c369ec7fea395ae"
 
 [[package]]
 name = "ring"
-version = "0.16.12"
+version = "0.16.13"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "1ba5a8ec64ee89a76c98c549af81ff14813df09c3e6dc4766c3856da48597a0c"
+checksum = "703516ae74571f24b465b4a1431e81e2ad51336cb0ded733a55a1aa3eccac196"
 dependencies = [
  "cc",
- "lazy_static",
  "libc",
+ "once_cell",
  "spin",
  "untrusted",
  "web-sys",
@@ -892,9 +898,9 @@ checksum = "826e7639553986605ec5979c7dd957c7895e93eabed50ab2ffa7f6128a75097c"
 
 [[package]]
 name = "untrusted"
-version = "0.7.0"
+version = "0.7.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "60369ef7a31de49bcb3f6ca728d4ba7300d9a1658f94c727d4cab8c8d9f4aece"
+checksum = "a156c684c91ea7d62626509bce3cb4e1d9ed5c4d978f7b4352658f96a4c26b4a"
 
 [[package]]
 name = "version_check"
diff --git a/Cargo.toml b/Cargo.toml
index e47a45d..d60c380 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -48,7 +48,7 @@ zeroize = "1"
 
 [dev-dependencies]
 env_logger = "0.7"
-ring = "0.16.11"
+ring = "0.16.13"
 lazy_static = "1"
 
 [features]