diff --git a/Cargo.lock b/Cargo.lock
index f446e0dcae31..adf449732118 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -168,16 +168,34 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "5bc25126d18a012146a888a0298f2c22e1150327bd2765fc76d710a556b2d614"
 dependencies = [
  "ahash 0.8.7",
- "arrow-arith",
- "arrow-array",
- "arrow-buffer",
- "arrow-cast",
- "arrow-data",
- "arrow-ord",
- "arrow-row",
- "arrow-schema",
- "arrow-select",
- "arrow-string",
+ "arrow-arith 49.0.0",
+ "arrow-array 49.0.0",
+ "arrow-buffer 49.0.0",
+ "arrow-cast 49.0.0",
+ "arrow-data 49.0.0",
+ "arrow-ord 49.0.0",
+ "arrow-row 49.0.0",
+ "arrow-schema 49.0.0",
+ "arrow-select 49.0.0",
+ "arrow-string 49.0.0",
+]
+
+[[package]]
+name = "arrow"
+version = "51.0.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "219d05930b81663fd3b32e3bde8ce5bff3c4d23052a99f11a8fa50a3b47b2658"
+dependencies = [
+ "arrow-arith 51.0.0",
+ "arrow-array 51.0.0",
+ "arrow-buffer 51.0.0",
+ "arrow-cast 51.0.0",
+ "arrow-data 51.0.0",
+ "arrow-ord 51.0.0",
+ "arrow-row 51.0.0",
+ "arrow-schema 51.0.0",
+ "arrow-select 51.0.0",
+ "arrow-string 51.0.0",
  "pyo3",
 ]
 
@@ -187,10 +205,25 @@ version = "49.0.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "34ccd45e217ffa6e53bbb0080990e77113bdd4e91ddb84e97b77649810bcf1a7"
 dependencies = [
- "arrow-array",
- "arrow-buffer",
- "arrow-data",
- "arrow-schema",
+ "arrow-array 49.0.0",
+ "arrow-buffer 49.0.0",
+ "arrow-data 49.0.0",
+ "arrow-schema 49.0.0",
+ "chrono",
+ "half",
+ "num",
+]
+
+[[package]]
+name = "arrow-arith"
+version = "51.0.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "0272150200c07a86a390be651abdd320a2d12e84535f0837566ca87ecd8f95e0"
+dependencies = [
+ "arrow-array 51.0.0",
+ "arrow-buffer 51.0.0",
+ "arrow-data 51.0.0",
+ "arrow-schema 51.0.0",
  "chrono",
  "half",
  "num",
@@ -203,9 +236,25 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "6bda9acea48b25123c08340f3a8ac361aa0f74469bb36f5ee9acf923fce23e9d"
 dependencies = [
  "ahash 0.8.7",
- "arrow-buffer",
- "arrow-data",
- "arrow-schema",
+ "arrow-buffer 49.0.0",
+ "arrow-data 49.0.0",
+ "arrow-schema 49.0.0",
+ "chrono",
+ "half",
+ "hashbrown 0.14.3",
+ "num",
+]
+
+[[package]]
+name = "arrow-array"
+version = "51.0.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8010572cf8c745e242d1b632bd97bd6d4f40fefed5ed1290a8f433abaa686fea"
+dependencies = [
+ "ahash 0.8.7",
+ "arrow-buffer 51.0.0",
+ "arrow-data 51.0.0",
+ "arrow-schema 51.0.0",
  "chrono",
  "half",
  "hashbrown 0.14.3",
@@ -223,23 +272,55 @@ dependencies = [
  "num",
 ]
 
+[[package]]
+name = "arrow-buffer"
+version = "51.0.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "0d0a2432f0cba5692bf4cb757469c66791394bac9ec7ce63c1afe74744c37b27"
+dependencies = [
+ "bytes",
+ "half",
+ "num",
+]
+
 [[package]]
 name = "arrow-cast"
 version = "49.0.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "5dc0368ed618d509636c1e3cc20db1281148190a78f43519487b2daf07b63b4a"
 dependencies = [
- "arrow-array",
- "arrow-buffer",
- "arrow-data",
- "arrow-schema",
- "arrow-select",
- "base64",
+ "arrow-array 49.0.0",
+ "arrow-buffer 49.0.0",
+ "arrow-data 49.0.0",
+ "arrow-schema 49.0.0",
+ "arrow-select 49.0.0",
+ "base64 0.21.7",
+ "chrono",
+ "comfy-table",
+ "half",
+ "lexical-core",
+ "num",
+]
+
+[[package]]
+name = "arrow-cast"
+version = "51.0.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9abc10cd7995e83505cc290df9384d6e5412b207b79ce6bdff89a10505ed2cba"
+dependencies = [
+ "arrow-array 51.0.0",
+ "arrow-buffer 51.0.0",
+ "arrow-data 51.0.0",
+ "arrow-schema 51.0.0",
+ "arrow-select 51.0.0",
+ "atoi",
+ "base64 0.22.0",
  "chrono",
  "comfy-table",
  "half",
  "lexical-core",
  "num",
+ "ryu",
 ]
 
 [[package]]
@@ -248,8 +329,20 @@ version = "49.0.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "907fafe280a3874474678c1858b9ca4cb7fd83fb8034ff5b6d6376205a08c634"
 dependencies = [
- "arrow-buffer",
- "arrow-schema",
+ "arrow-buffer 49.0.0",
+ "arrow-schema 49.0.0",
+ "half",
+ "num",
+]
+
+[[package]]
+name = "arrow-data"
+version = "51.0.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "2742ac1f6650696ab08c88f6dd3f0eb68ce10f8c253958a18c943a68cd04aec5"
+dependencies = [
+ "arrow-buffer 51.0.0",
+ "arrow-schema 51.0.0",
  "half",
  "num",
 ]
@@ -260,11 +353,26 @@ version = "49.0.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "9b23b0e53c0db57c6749997fd343d4c0354c994be7eca67152dd2bdb9a3e1bb4"
 dependencies = [
- "arrow-array",
- "arrow-buffer",
- "arrow-data",
- "arrow-schema",
- "arrow-select",
+ "arrow-array 49.0.0",
+ "arrow-buffer 49.0.0",
+ "arrow-data 49.0.0",
+ "arrow-schema 49.0.0",
+ "arrow-select 49.0.0",
+ "half",
+ "num",
+]
+
+[[package]]
+name = "arrow-ord"
+version = "51.0.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e3e6b61e3dc468f503181dccc2fc705bdcc5f2f146755fa5b56d0a6c5943f412"
+dependencies = [
+ "arrow-array 51.0.0",
+ "arrow-buffer 51.0.0",
+ "arrow-data 51.0.0",
+ "arrow-schema 51.0.0",
+ "arrow-select 51.0.0",
  "half",
  "num",
 ]
@@ -276,10 +384,25 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "361249898d2d6d4a6eeb7484be6ac74977e48da12a4dd81a708d620cc558117a"
 dependencies = [
  "ahash 0.8.7",
- "arrow-array",
- "arrow-buffer",
- "arrow-data",
- "arrow-schema",
+ "arrow-array 49.0.0",
+ "arrow-buffer 49.0.0",
+ "arrow-data 49.0.0",
+ "arrow-schema 49.0.0",
+ "half",
+ "hashbrown 0.14.3",
+]
+
+[[package]]
+name = "arrow-row"
+version = "51.0.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "848ee52bb92eb459b811fb471175ea3afcf620157674c8794f539838920f9228"
+dependencies = [
+ "ahash 0.8.7",
+ "arrow-array 51.0.0",
+ "arrow-buffer 51.0.0",
+ "arrow-data 51.0.0",
+ "arrow-schema 51.0.0",
  "half",
  "hashbrown 0.14.3",
 ]
@@ -293,6 +416,15 @@ dependencies = [
  "bitflags 2.4.2",
 ]
 
+[[package]]
+name = "arrow-schema"
+version = "51.0.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "02d9483aaabe910c4781153ae1b6ae0393f72d9ef757d38d09d450070cf2e528"
+dependencies = [
+ "bitflags 2.4.2",
+]
+
 [[package]]
 name = "arrow-select"
 version = "49.0.0"
@@ -300,10 +432,24 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "4f6208466590960efc1d2a7172bc4ff18a67d6e25c529381d7f96ddaf0dc4036"
 dependencies = [
  "ahash 0.8.7",
- "arrow-array",
- "arrow-buffer",
- "arrow-data",
- "arrow-schema",
+ "arrow-array 49.0.0",
+ "arrow-buffer 49.0.0",
+ "arrow-data 49.0.0",
+ "arrow-schema 49.0.0",
+ "num",
+]
+
+[[package]]
+name = "arrow-select"
+version = "51.0.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "849524fa70e0e3c5ab58394c770cb8f514d0122d20de08475f7b472ed8075830"
+dependencies = [
+ "ahash 0.8.7",
+ "arrow-array 51.0.0",
+ "arrow-buffer 51.0.0",
+ "arrow-data 51.0.0",
+ "arrow-schema 51.0.0",
  "num",
 ]
 
@@ -313,11 +459,28 @@ version = "49.0.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "a4a48149c63c11c9ff571e50ab8f017d2a7cb71037a882b42f6354ed2da9acc7"
 dependencies = [
- "arrow-array",
- "arrow-buffer",
- "arrow-data",
- "arrow-schema",
- "arrow-select",
+ "arrow-array 49.0.0",
+ "arrow-buffer 49.0.0",
+ "arrow-data 49.0.0",
+ "arrow-schema 49.0.0",
+ "arrow-select 49.0.0",
+ "num",
+ "regex",
+ "regex-syntax",
+]
+
+[[package]]
+name = "arrow-string"
+version = "51.0.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9373cb5a021aee58863498c37eb484998ef13377f69989c6c5ccfbd258236cdb"
+dependencies = [
+ "arrow-array 51.0.0",
+ "arrow-buffer 51.0.0",
+ "arrow-data 51.0.0",
+ "arrow-schema 51.0.0",
+ "arrow-select 51.0.0",
+ "memchr",
  "num",
  "regex",
  "regex-syntax",
@@ -347,6 +510,15 @@ dependencies = [
  "pin-project-lite",
 ]
 
+[[package]]
+name = "atoi"
+version = "2.0.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f28d99ec8bfea296261ca1af174f24225171fea9664ba9003cbebee704810528"
+dependencies = [
+ "num-traits",
+]
+
 [[package]]
 name = "atty"
 version = "0.2.14"
@@ -385,6 +557,12 @@ version = "0.21.7"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "9d297deb1925b89f2ccc13d7635fa0714f12c87adce1c75356b39ca9b7178567"
 
+[[package]]
+name = "base64"
+version = "0.22.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9475866fec1451be56a3c2400fd081ff546538961565ccb5b7142cbd22bc7a51"
+
 [[package]]
 name = "bigdecimal"
 version = "0.3.1"
@@ -846,7 +1024,7 @@ version = "0.3.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "01313fde3e8ccf9f49b899d639bad75d5a2e019dce5ab8a1acf7118e7cf62905"
 dependencies = [
- "arrow",
+ "arrow 49.0.0",
  "chrono",
  "fallible-streaming-iterator",
  "itertools 0.10.5",
@@ -1134,7 +1312,7 @@ version = "0.10.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "91064bc413bb2db36005516878ab585da67e9b093956e1af1b6e036a2a9cfa4f"
 dependencies = [
- "arrow",
+ "arrow 49.0.0",
  "cast",
  "chrono",
  "fallible-iterator 0.3.0",
@@ -2082,7 +2260,7 @@ name = "lutra"
 version = "0.11.5"
 dependencies = [
  "anyhow",
- "arrow",
+ "arrow 51.0.0",
  "clap 4.4.18",
  "connector_arrow",
  "env_logger",
@@ -2098,7 +2276,7 @@ dependencies = [
 name = "lutra-python"
 version = "0.11.5"
 dependencies = [
- "arrow",
+ "arrow 51.0.0",
  "itertools 0.12.1",
  "lutra",
  "pyo3",
@@ -2281,7 +2459,7 @@ version = "0.30.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "57349d5a326b437989b6ee4dc8f2f34b0cc131202748414712a8e7d98952fc8c"
 dependencies = [
- "base64",
+ "base64 0.21.7",
  "bigdecimal",
  "bindgen",
  "bitflags 2.4.2",
@@ -2594,7 +2772,7 @@ version = "2.0.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "6b13fe415cdf3c8e44518e18a7c95a13431d9bdf6d15367d82b23c377fdd441a"
 dependencies = [
- "base64",
+ "base64 0.21.7",
  "serde",
 ]
 
@@ -2746,7 +2924,7 @@ version = "0.6.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "49b6c5ef183cd3ab4ba005f1ca64c21e8bd97ce4699cfea9e8d9a2c4958ca520"
 dependencies = [
- "base64",
+ "base64 0.21.7",
  "byteorder",
  "bytes",
  "fallible-iterator 0.2.0",
@@ -3439,7 +3617,7 @@ version = "1.0.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "1c74cae0a4cf6ccbbf5f359f08efdf8ee7e1dc532573bf0db71968cb56b1448c"
 dependencies = [
- "base64",
+ "base64 0.21.7",
 ]
 
 [[package]]
diff --git a/lutra/bindings/python/Cargo.toml b/lutra/bindings/python/Cargo.toml
index ae78473c000f..0cf9caf76171 100644
--- a/lutra/bindings/python/Cargo.toml
+++ b/lutra/bindings/python/Cargo.toml
@@ -14,7 +14,7 @@ crate-type = ["cdylib"]
 doc = false
 
 [target.'cfg(not(target_family="wasm"))'.dependencies]
-arrow = {version = "49.0", features = ["pyarrow"], default-features = false}
+arrow = {version = "51.0", features = ["pyarrow"], default-features = false}
 itertools = {workspace = true}
 # we rename lutra to lutralib here, so we can define a function named lutra
 lutralib = {package = "lutra", path = "../../lutra", default-features = false}
diff --git a/lutra/lutra/Cargo.toml b/lutra/lutra/Cargo.toml
index d1e72fc7f1a1..d6ef5083c609 100644
--- a/lutra/lutra/Cargo.toml
+++ b/lutra/lutra/Cargo.toml
@@ -19,7 +19,7 @@ required-features = ["cli"]
 
 [target.'cfg(not(target_family="wasm"))'.dependencies]
 anyhow = {workspace = true}
-arrow = {version = "49.0", features = ["prettyprint"], default-features = false}
+arrow = {version = "51.0", features = ["prettyprint"], default-features = false}
 clap = {version = "4.4.18", features = ["derive"], optional = true}
 connector_arrow = {version = "0.3.0", features = ["src_sqlite"]}
 env_logger = "0.10.2"