diff --git a/Cargo.lock b/Cargo.lock
index 894f9a17..e8dbc52e 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -81,9 +81,9 @@ checksum = "7c02d123df017efcdfbd739ef81735b36c5ba83ec3c59c80a9d7ecc718f92e50"
 
 [[package]]
 name = "arrow-array"
-version = "53.3.0"
+version = "54.0.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "bd03279cea46569acf9295f6224fbc370c5df184b4d2ecfe97ccb131d5615a7f"
+checksum = "bd6ed90c28c6f73a706c55799b8cc3a094e89257238e5b1d65ca7c70bd3ae23f"
 dependencies = [
  "ahash",
  "arrow-buffer",
@@ -97,9 +97,9 @@ dependencies = [
 
 [[package]]
 name = "arrow-buffer"
-version = "53.3.0"
+version = "54.0.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "9e4a9b9b1d6d7117f6138e13bc4dd5daa7f94e671b70e8c9c4dc37b4f5ecfc16"
+checksum = "fe4a40bdc1552ea10fbdeae4e5a945d8572c32f66bce457b96c13d9c46b80447"
 dependencies = [
  "bytes",
  "half",
@@ -108,9 +108,9 @@ dependencies = [
 
 [[package]]
 name = "arrow-cast"
-version = "53.3.0"
+version = "54.0.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "bc70e39916e60c5b7af7a8e2719e3ae589326039e1e863675a008bee5ffe90fd"
+checksum = "430c0a21aa7f81bcf0f97c57216d7127795ea755f494d27bae2bd233be43c2cc"
 dependencies = [
  "arrow-array",
  "arrow-buffer",
@@ -128,9 +128,9 @@ dependencies = [
 
 [[package]]
 name = "arrow-data"
-version = "53.3.0"
+version = "54.0.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e4e75edf21ffd53744a9b8e3ed11101f610e7ceb1a29860432824f1834a1f623"
+checksum = "09af476cfbe9879937e50b1334c73189de6039186e025b1b1ac84b283b87b20e"
 dependencies = [
  "arrow-buffer",
  "arrow-schema",
@@ -140,13 +140,12 @@ dependencies = [
 
 [[package]]
 name = "arrow-ipc"
-version = "53.3.0"
+version = "54.0.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d186a909dece9160bf8312f5124d797884f608ef5435a36d9d608e0b2a9bcbf8"
+checksum = "136296e8824333a8a4c4a6e508e4aa65d5678b801246d0408825ae7b2523c628"
 dependencies = [
  "arrow-array",
  "arrow-buffer",
- "arrow-cast",
  "arrow-data",
  "arrow-schema",
  "flatbuffers",
@@ -154,15 +153,15 @@ dependencies = [
 
 [[package]]
 name = "arrow-schema"
-version = "53.3.0"
+version = "54.0.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b95513080e728e4cec37f1ff5af4f12c9688d47795d17cda80b6ec2cf74d4678"
+checksum = "3a1822a1a952955637e85e8f9d6b0e04dd75d65492b87ec548dd593d3a1f772b"
 
 [[package]]
 name = "arrow-select"
-version = "53.3.0"
+version = "54.0.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "8e415279094ea70323c032c6e739c48ad8d80e78a09bef7117b8718ad5bf3722"
+checksum = "5c4172e9a12dfe15303d3926269f9ead471ea93bdd067d113abc65cb6c48e246"
 dependencies = [
  "ahash",
  "arrow-array",
@@ -875,9 +874,9 @@ dependencies = [
 
 [[package]]
 name = "parquet"
-version = "53.3.0"
+version = "54.0.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "2b449890367085eb65d7d3321540abc3d7babbd179ce31df0016e90719114191"
+checksum = "3334c50239d9f4951653d84fa6f636da86f53742e5e5849a30fbe852f3ff4383"
 dependencies = [
  "ahash",
  "arrow-array",
diff --git a/deep_causality/examples/ctx/Cargo.toml b/deep_causality/examples/ctx/Cargo.toml
index 9909682f..ff354d9a 100644
--- a/deep_causality/examples/ctx/Cargo.toml
+++ b/deep_causality/examples/ctx/Cargo.toml
@@ -14,7 +14,7 @@ deep_causality = "0.6.2"
 # chrono default-features = false mitigates "RUSTSEC-2020-0071".
 # See https://rustsec.org/advisories/RUSTSEC-2020-0071.html
 chrono = { version = "0.4", default-features = false , features = ["serde", "clock"] }
-parquet = "53.3.0"
+parquet = "54.0.0"
 petgraph = "0.6"
 # default-features = false mitigates a warning of a yanked sub-sub dependency
 rust_decimal = { version = "1", default-features = false, features = ["serde"] }