diff --git a/Cargo.lock b/Cargo.lock
index a3352e4..af518eb 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -2,6 +2,15 @@
 # It is not intended for manual editing.
 version = 3
 
+[[package]]
+name = "android_system_properties"
+version = "0.1.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d7ed72e1635e121ca3e79420540282af22da58be50de153d36f81ddc6b83aa9e"
+dependencies = [
+ "libc",
+]
+
 [[package]]
 name = "anyhow"
 version = "1.0.60"
@@ -49,10 +58,11 @@ checksum = "baf1de4339761588bc0619e3cbc0120ee582ebb74b53b4efbf79117bd2da40fd"
 
 [[package]]
 name = "chrono"
-version = "0.4.20"
+version = "0.4.21"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "6127248204b9aba09a362f6c930ef6a78f2c1b2215f8a7b398c06e1083f17af0"
+checksum = "3f725f340c3854e3cb3ab736dc21f0cca183303acea3b3ffec30f141503ac8eb"
 dependencies = [
+ "iana-time-zone",
  "js-sys",
  "num-integer",
  "num-traits",
@@ -61,6 +71,22 @@ dependencies = [
  "winapi",
 ]
 
+[[package]]
+name = "core-foundation"
+version = "0.9.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "194a7a9e6de53fa55116934067c844d9d749312f75c6f6d0980e8c252f8c2146"
+dependencies = [
+ "core-foundation-sys",
+ "libc",
+]
+
+[[package]]
+name = "core-foundation-sys"
+version = "0.8.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5827cebf4670468b8772dd191856768aedcb1b0278a04f989f7766351917b9dc"
+
 [[package]]
 name = "cpufeatures"
 version = "0.2.2"
@@ -131,6 +157,19 @@ dependencies = [
  "digest",
 ]
 
+[[package]]
+name = "iana-time-zone"
+version = "0.1.41"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1779539f58004e5dba1c1f093d44325ebeb244bfc04b791acdc0aaeca9c04570"
+dependencies = [
+ "android_system_properties",
+ "core-foundation",
+ "js-sys",
+ "wasm-bindgen",
+ "winapi",
+]
+
 [[package]]
 name = "itoa"
 version = "1.0.2"
diff --git a/Cargo.toml b/Cargo.toml
index e6d2a20..f3e1036 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -20,7 +20,7 @@ jwt = ["chrono", "serde", "jsonwebtoken"]
 sha1 = { version = "0.10.1", optional = true }
 sha2 = { version = "0.10.2", optional = true }
 hmac = { version = "0.12.1", optional = true }
-chrono = { version = "0.4.20", optional = true }
+chrono = { version = "0.4.21", optional = true }
 serde = { version = "1.0.143", optional = true }
 jsonwebtoken = { version = "8.1.1", optional = true }
 thiserror = "1.0.32"