diff --git a/Cargo.lock b/Cargo.lock
index 84f323a7..468b2091 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -487,15 +487,15 @@ checksum = "a4521f3e3d031370679b3b140beb36dfe4801b09ac77e30c61941f97df3ef28b"
 
 [[package]]
 name = "base64"
-version = "0.12.3"
+version = "0.13.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "3441f0f7b02788e948e47f457ca01f1d7e6d92c693bc132c22b087d3141c03ff"
+checksum = "904dfeac50f3cdaba28fc6f57fdcddb75f49ed61346676a78c4ffe55877802fd"
 
 [[package]]
 name = "base64"
-version = "0.13.0"
+version = "0.21.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "904dfeac50f3cdaba28fc6f57fdcddb75f49ed61346676a78c4ffe55877802fd"
+checksum = "a4a4ddaa51a5bc52a6948f74c06d20aaaddb71924eab79b8c97a8c556e942d6a"
 
 [[package]]
 name = "bincode"
@@ -613,19 +613,6 @@ version = "0.2.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "8100e46ff92eb85bf6dc2930c73f2a4f7176393c84a9446b3d501e1b354e7b34"
 
-[[package]]
-name = "chrono"
-version = "0.4.19"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "670ad68c9088c2a963aaa298cb369688cf3f9465ce5e2d4ca10e6e0098a1ce73"
-dependencies = [
- "libc",
- "num-integer",
- "num-traits",
- "time 0.1.43",
- "winapi 0.3.9",
-]
-
 [[package]]
 name = "clap"
 version = "2.34.0"
@@ -1397,11 +1384,11 @@ dependencies = [
 
 [[package]]
 name = "jsonwebtoken"
-version = "7.2.0"
+version = "8.3.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "afabcc15e437a6484fc4f12d0fd63068fe457bf93f1c148d3d9649c60b103f32"
+checksum = "6971da4d9c3aa03c3d8f3ff0f4155b534aad021292003895a469716b2a230378"
 dependencies = [
- "base64 0.12.3",
+ "base64 0.21.0",
  "pem",
  "ring",
  "serde",
@@ -1635,9 +1622,9 @@ dependencies = [
 
 [[package]]
 name = "num-bigint"
-version = "0.2.6"
+version = "0.4.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "090c7f9998ee0ff65aa5b723e4009f7b217707f1fb5ea551329cc4d6231fb304"
+checksum = "f93ab6289c7b344a8a9f60f88d80aa20032336fe78da341afc91c8a2341fc75f"
 dependencies = [
  "autocfg",
  "num-integer",
@@ -1754,13 +1741,11 @@ dependencies = [
 
 [[package]]
 name = "pem"
-version = "0.8.3"
+version = "1.1.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "fd56cbd21fea48d0c440b41cd69c589faacade08c992d9a54e471b79d0fd13eb"
+checksum = "a8835c273a76a90455d7344889b0964598e3316e2a79ede8e36f16bdcf2228b8"
 dependencies = [
  "base64 0.13.0",
- "once_cell",
- "regex",
 ]
 
 [[package]]
@@ -2313,13 +2298,14 @@ dependencies = [
 
 [[package]]
 name = "simple_asn1"
-version = "0.4.1"
+version = "0.6.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "692ca13de57ce0613a363c8c2f1de925adebc81b04c923ac60c5488bb44abe4b"
+checksum = "adc4e5204eb1910f40f9cfa375f6f05b68c3abac4b6fd879c8ff5e7ae8a0a085"
 dependencies = [
- "chrono",
  "num-bigint",
  "num-traits",
+ "thiserror",
+ "time 0.3.20",
 ]
 
 [[package]]
@@ -2499,16 +2485,6 @@ dependencies = [
  "num_cpus",
 ]
 
-[[package]]
-name = "time"
-version = "0.1.43"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ca8a50ef2360fbd1eeb0ecd46795a87a19024eb4b53c5dc916ca1fd95fe62438"
-dependencies = [
- "libc",
- "winapi 0.3.9",
-]
-
 [[package]]
 name = "time"
 version = "0.2.24"
@@ -2519,11 +2495,29 @@ dependencies = [
  "libc",
  "standback",
  "stdweb",
- "time-macros",
+ "time-macros 0.1.1",
  "version_check 0.9.2",
  "winapi 0.3.9",
 ]
 
+[[package]]
+name = "time"
+version = "0.3.20"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "cd0cbfecb4d19b5ea75bb31ad904eb5b9fa13f21079c3b92017ebdf4999a5890"
+dependencies = [
+ "itoa 1.0.1",
+ "serde",
+ "time-core",
+ "time-macros 0.2.8",
+]
+
+[[package]]
+name = "time-core"
+version = "0.1.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "2e153e1f1acaef8acc537e68b44906d2db6436e2b35ac2c6b42640fff91f00fd"
+
 [[package]]
 name = "time-macros"
 version = "0.1.1"
@@ -2534,6 +2528,15 @@ dependencies = [
  "time-macros-impl",
 ]
 
+[[package]]
+name = "time-macros"
+version = "0.2.8"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "fd80a657e71da814b8e5d60d3374fc6d35045062245d80224748ae522dd76f36"
+dependencies = [
+ "time-core",
+]
+
 [[package]]
 name = "time-macros-impl"
 version = "0.1.2"
diff --git a/backend/Cargo.toml b/backend/Cargo.toml
index 0643e08f..e87ab4d9 100644
--- a/backend/Cargo.toml
+++ b/backend/Cargo.toml
@@ -38,7 +38,7 @@ clap = { version = "2.34.0", features = ["yaml"] }
 diesel = { version = "1.4.8", features = ["r2d2", "postgres"] }
 env_logger = "0.9.0"
 futures = "0.3.25"
-jsonwebtoken = "7.2.0"
+jsonwebtoken = "8.3.0"
 log = "0.4.14"
 num_cpus = "1.13.0"
 openssl = "0.10.38"