diff --git a/Cargo.lock b/Cargo.lock
index 76d9848aa..2d2daf8bc 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -515,9 +515,9 @@ checksum = "baf1de4339761588bc0619e3cbc0120ee582ebb74b53b4efbf79117bd2da40fd"
 
 [[package]]
 name = "chrono"
-version = "0.4.21"
+version = "0.4.22"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "3f725f340c3854e3cb3ab736dc21f0cca183303acea3b3ffec30f141503ac8eb"
+checksum = "bfd4d1b31faaa3a89d7934dbded3111da0d2ef28e3ebccdb4f0179f5929d1ef1"
 dependencies = [
  "iana-time-zone",
  "js-sys",
@@ -588,16 +588,6 @@ version = "0.1.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "a2df960f5d869b2dd8532793fde43eb5427cceb126c929747a26823ab0eeb536"
 
-[[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"
@@ -1000,12 +990,12 @@ checksum = "9a3a5bfb195931eeb336b2a7b4d761daec841b97f947d34394601737a7bba5e4"
 
 [[package]]
 name = "iana-time-zone"
-version = "0.1.41"
+version = "0.1.44"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "1779539f58004e5dba1c1f093d44325ebeb244bfc04b791acdc0aaeca9c04570"
+checksum = "808cf7d67cf4a22adc5be66e75ebdf769b3f2ea032041437a7061f97a63dad4b"
 dependencies = [
  "android_system_properties",
- "core-foundation",
+ "core-foundation-sys",
  "js-sys",
  "wasm-bindgen",
  "winapi 0.3.9",
diff --git a/taskchampion/sync-server/Cargo.toml b/taskchampion/sync-server/Cargo.toml
index 7e28c4c5f..8a2b17419 100644
--- a/taskchampion/sync-server/Cargo.toml
+++ b/taskchampion/sync-server/Cargo.toml
@@ -19,7 +19,7 @@ clap = "^3.2.10"
 log = "^0.4.17"
 env_logger = "^0.9.0"
 rusqlite = { version = "0.28", features = ["bundled"] }
-chrono = { version = "^0.4.21", features = ["serde"] }
+chrono = { version = "^0.4.22", features = ["serde"] }
 
 [dev-dependencies]
 actix-rt = "^1.1.1"
diff --git a/taskchampion/taskchampion/Cargo.toml b/taskchampion/taskchampion/Cargo.toml
index 1c1b6e6ca..e35e68b1b 100644
--- a/taskchampion/taskchampion/Cargo.toml
+++ b/taskchampion/taskchampion/Cargo.toml
@@ -14,7 +14,7 @@ edition = "2018"
 uuid = { version = "^1.1.2", features = ["serde", "v4"] }
 serde = { version = "^1.0.143", features = ["derive"] }
 serde_json = "^1.0"
-chrono = { version = "^0.4.21", features = ["serde"] }
+chrono = { version = "^0.4.22", features = ["serde"] }
 anyhow = "1.0"
 thiserror = "1.0"
 ureq = "^2.5.0"