diff --git a/Cargo.lock b/Cargo.lock
index ba9bf24..bc40504 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -176,9 +176,9 @@ checksum = "a3e2c3daef883ecc1b5d58c15adae93470a91d425f3532ba1695849656af3fc1"
 
 [[package]]
 name = "byteorder"
-version = "1.4.3"
+version = "1.5.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "14c189c53d098945499cdfa7ecc63567cf3886b3332b312a5b4585d8d3a6a610"
+checksum = "1fd0f2584146f6f2ef48085050886acf353beff7305ebd1ae69500e27c67f64b"
 
 [[package]]
 name = "cast"
@@ -449,7 +449,7 @@ dependencies = [
  "proc-macro2",
  "quote",
  "scratch",
- "syn 2.0.28",
+ "syn 2.0.74",
 ]
 
 [[package]]
@@ -466,7 +466,7 @@ checksum = "5fb2a9757fb085d6d97856b28d4f049141ca4a61a64c697f4426433b5f6caa1f"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.28",
+ "syn 2.0.74",
 ]
 
 [[package]]
@@ -1054,9 +1054,9 @@ checksum = "b06a4cde4c0f271a446782e3eff8de789548ce57dbc8eca9292c27f4a42004b4"
 
 [[package]]
 name = "marlu"
-version = "0.11.0"
+version = "0.12.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "4e611f77c79511e2d3f22dda0ef8ebe311b40cf6abffa4dbe10484f18a9377eb"
+checksum = "87329073badac25c4d8d4d2544cbfdf389fefba069062d44e6b29ba0912db318"
 dependencies = [
  "approx",
  "built",
@@ -1136,24 +1136,32 @@ dependencies = [
 
 [[package]]
 name = "ndarray"
-version = "0.15.6"
+version = "0.16.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "adb12d4e967ec485a5f71c6311fe28158e9d6f4bc4a447b474184d0f91a8fa32"
+checksum = "087ee1ca8a7c22830c2bba4a96ed8e72ce0968ae944349324d52522f66aa3944"
 dependencies = [
  "approx",
  "matrixmultiply",
  "num-complex",
  "num-integer",
  "num-traits",
+ "portable-atomic 1.7.0",
+ "portable-atomic-util",
  "rawpointer",
  "rayon",
 ]
 
+[[package]]
+name = "never"
+version = "0.1.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "c96aba5aa877601bb3f6dd6a63a969e1f82e60646e81e71b14496995e9853c91"
+
 [[package]]
 name = "num-complex"
-version = "0.4.3"
+version = "0.4.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "02e0d21255c828d6f128a1e41534206671e8c3ea0c62f32291e808dc82cff17d"
+checksum = "73f88a1307638156682bada9d7604135552957b7818057dcef22705b4d509495"
 dependencies = [
  "num-traits",
 ]
@@ -1166,7 +1174,7 @@ checksum = "ed3955f1a9c7c0c15e092f9c887db08b1fc683305fdf6eb6684f22555355e202"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.28",
+ "syn 2.0.74",
 ]
 
 [[package]]
@@ -1181,9 +1189,9 @@ dependencies = [
 
 [[package]]
 name = "num-traits"
-version = "0.2.16"
+version = "0.2.19"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f30b0abd723be7e2ffca1272140fac1a2f084c77ec3e123c192b66af1ee9e6c2"
+checksum = "071dfc062690e90b734c0b2273ce72ad0ffa95f0c74596bc250dcfd960262841"
 dependencies = [
  "autocfg",
  "libm",
@@ -1268,14 +1276,23 @@ version = "0.3.20"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "e30165d31df606f5726b090ec7592c308a0eaf61721ff64c9a3018e344a8753e"
 dependencies = [
- "portable-atomic 1.4.2",
+ "portable-atomic 1.7.0",
 ]
 
 [[package]]
 name = "portable-atomic"
-version = "1.4.2"
+version = "1.7.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f32154ba0af3a075eefa1eda8bb414ee928f62303a54ea85b8d6638ff1a6ee9e"
+checksum = "da544ee218f0d287a911e9c99a39a8c9bc8fcad3cb8db5959940044ecfc67265"
+
+[[package]]
+name = "portable-atomic-util"
+version = "0.2.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "fcdd8420072e66d54a407b3316991fe946ce3ab1083a7f575b2463866624704d"
+dependencies = [
+ "portable-atomic 1.7.0",
+]
 
 [[package]]
 name = "prettytable-rs"
@@ -1293,18 +1310,18 @@ dependencies = [
 
 [[package]]
 name = "proc-macro2"
-version = "1.0.66"
+version = "1.0.86"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "18fb31db3f9bddb2ea821cde30a9f70117e3f119938b5ee630b7403aa6e2ead9"
+checksum = "5e719e8df665df0d1c8fbfd238015744736151d4445ec0836b8e628aae103b77"
 dependencies = [
  "unicode-ident",
 ]
 
 [[package]]
 name = "quote"
-version = "1.0.32"
+version = "1.0.36"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "50f3b39ccfb720540debaa0164757101c08ecb8d326b15358ce76a62c7e85965"
+checksum = "0fa76aaf39101c457836aec0ce2316dbdc3ab723cdda1c6bd4e6ad4208acaca7"
 dependencies = [
  "proc-macro2",
 ]
@@ -1395,12 +1412,13 @@ checksum = "e5ea92a5b6195c6ef2a0295ea818b312502c6fc94dde986c5553242e18fd4ce2"
 
 [[package]]
 name = "rubbl_casatables"
-version = "0.7.0"
+version = "0.8.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a048158e9953c00dec139ff81a37cb4cc28e00c18be189ef704b167911ba9863"
+checksum = "3b735aaa1993effdc3715a270e9ae6f2afa44de55228d916b32f088e8d2694c7"
 dependencies = [
  "cc",
  "ndarray",
+ "never",
  "rubbl_casatables_impl",
  "rubbl_core",
  "thiserror",
@@ -1417,9 +1435,9 @@ dependencies = [
 
 [[package]]
 name = "rubbl_core"
-version = "0.4.0"
+version = "0.5.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "51804c5510b8e90db157d56ec29560916da9c35a2e53bf57380978c214c9ec2e"
+checksum = "07d81c00458933f85fd0021152cca476d4943d2141343976caae74c5a14a2d4e"
 dependencies = [
  "byteorder",
  "ndarray",
@@ -1502,7 +1520,7 @@ checksum = "aafe972d60b0b9bee71a91b92fee2d4fb3c9d7e8f6b179aa99f27203d99a4816"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.28",
+ "syn 2.0.74",
 ]
 
 [[package]]
@@ -1547,9 +1565,9 @@ dependencies = [
 
 [[package]]
 name = "syn"
-version = "2.0.28"
+version = "2.0.74"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "04361975b3f5e348b2189d8dc55bc942f278b2d482a6a0365de5bdd62d351567"
+checksum = "1fceb41e3d546d0bd83421d3409b1460cc7444cd389341a4c880fe7a042cb3d7"
 dependencies = [
  "proc-macro2",
  "quote",
@@ -1620,22 +1638,22 @@ checksum = "222a222a5bfe1bba4a77b45ec488a741b3cb8872e5e499451fd7d0129c9c7c3d"
 
 [[package]]
 name = "thiserror"
-version = "1.0.44"
+version = "1.0.63"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "611040a08a0439f8248d1990b111c95baa9c704c805fa1f62104b39655fd7f90"
+checksum = "c0342370b38b6a11b6cc11d6a805569958d54cfa061a29969c3b5ce2ea405724"
 dependencies = [
  "thiserror-impl",
 ]
 
 [[package]]
 name = "thiserror-impl"
-version = "1.0.44"
+version = "1.0.63"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "090198534930841fab3a5d1bb637cde49e339654e606195f8d9c76eeb081dc96"
+checksum = "a4558b58466b9ad7ca0f102865eccc95938dca1a74a856f2b57b6629050da261"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.28",
+ "syn 2.0.74",
 ]
 
 [[package]]
@@ -1759,7 +1777,7 @@ dependencies = [
  "once_cell",
  "proc-macro2",
  "quote",
- "syn 2.0.28",
+ "syn 2.0.74",
  "wasm-bindgen-shared",
 ]
 
@@ -1781,7 +1799,7 @@ checksum = "54681b18a46765f095758388f2d0cf16eb8d4169b639ab575a8f5693af210c7b"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.28",
+ "syn 2.0.74",
  "wasm-bindgen-backend",
  "wasm-bindgen-shared",
 ]
diff --git a/Cargo.toml b/Cargo.toml
index 6640785..16b79c1 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -36,14 +36,14 @@ cfitsio-static = ["marlu/cfitsio-static"]
 all-static = ["cfitsio-static"]
 
 [dependencies]
-byteorder = "1.4.3"
+byteorder = "1.5.0"
 cfg-if = "1.0.0"
 derive_builder = "0.11.1"
 indicatif = { version = "0.17.0", features = ["rayon"] }
 itertools = "0.10.0"
 lazy_static = "1.4.0"
 log = "0.4.0"
-marlu = "0.11.0"
+marlu = "0.12.0"
 regex = "1.4.0"
 thiserror = "1.0.0"
 
@@ -64,8 +64,8 @@ csv = "1.1"
 float-cmp = "0.9"
 glob = "0.3"
 lexical = "6.0"
-marlu = { version = "0.11.0", features = ["approx"] }
-ndarray = { version = "0.15.4", features = ["approx-0_5"] }
+marlu = { version = "0.12.0", features = ["approx"] }
+ndarray = { version = "0.16.0", features = ["approx"] }
 tempfile = "3.3"
 
 [build-dependencies]
diff --git a/src/cli.rs b/src/cli.rs
index 4855011..d876542 100644
--- a/src/cli.rs
+++ b/src/cli.rs
@@ -3961,8 +3961,8 @@ mod tests_aoflagger_flagset {
             assert_eq!(left_header.num_rows, right_header.num_rows);
             assert_eq!(left_header.num_rows as usize, num_rows);
 
-            let left_flags = $left_flagset.read_flags().unwrap().into_raw_vec();
-            let right_flags = $right_flagset.read_flags().unwrap().into_raw_vec();
+            let (left_flags, _) = $left_flagset.read_flags().unwrap().into_raw_vec_and_offset();
+            let (right_flags, _) = $right_flagset.read_flags().unwrap().into_raw_vec_and_offset();
             assert_eq!(left_flags.len(), right_flags.len());
             assert_eq!(
                 left_flags.len(),