diff --git a/Cargo.lock b/Cargo.lock
index 091dff9418d..fc193157f44 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -3647,9 +3647,9 @@ checksum = "117240f60069e65410b3ae1bb213295bd828f707b5bec6596a1afc8793ce0cbc"
 
 [[package]]
 name = "dtype_dispatch"
-version = "0.1.1"
+version = "0.2.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d3a5ccdfd6c5e7e2fea9c5cf256f2a08216047fab19c621c3da64e9ae4a1462d"
+checksum = "ab23e69df104e2fd85ee63a533a22d2132ef5975dc6b36f9f3e5a7305e4a8ed7"
 
 [[package]]
 name = "duckdb-bench"
@@ -7000,9 +7000,9 @@ dependencies = [
 
 [[package]]
 name = "pco"
-version = "0.4.9"
+version = "1.0.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "42382de9fb564e2d10cb4d5ca97cc06d928f0f9667bbef456b57e60827b6548b"
+checksum = "e89d71ab3c07ed898defa4915bdc2a963131d811a1eab0eeacfac65c94cdeae8"
 dependencies = [
  "better_io",
  "dtype_dispatch",
diff --git a/Cargo.toml b/Cargo.toml
index ba9a0268b87..732c61aea52 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -177,7 +177,7 @@ opentelemetry_sdk = "0.31.0"
 parking_lot = { version = "0.12.3", features = ["nightly"] }
 parquet = "57.1"
 paste = "1.0.15"
-pco = "0.4.4"
+pco = "1.0.1"
 pin-project-lite = "0.2.15"
 primitive-types = { version = "0.14.0" }
 proc-macro2 = "1.0.95"
diff --git a/encodings/pco/src/array.rs b/encodings/pco/src/array.rs
index 1cda0031520..961326a3d55 100644
--- a/encodings/pco/src/array.rs
+++ b/encodings/pco/src/array.rs
@@ -297,10 +297,10 @@ impl PcoArray {
         let mut chunk_infos = vec![]; // the Vortex metadata
         let mut page_buffers = vec![];
         for chunk_start in (0..n_values).step_by(values_per_chunk) {
-            let cc = match_number_enum!(
+            let chunk_end = cmp::min(n_values, chunk_start + values_per_chunk);
+            let mut cc = match_number_enum!(
                 number_type,
                 NumberType<T> => {
-                    let chunk_end = cmp::min(n_values, chunk_start + values_per_chunk);
                     let values = values.to_buffer::<T>();
                     let chunk = &values.as_slice()[chunk_start..chunk_end];
                     fc
@@ -309,8 +309,8 @@ impl PcoArray {
                 }
             );
 
-            let mut chunk_meta_buffer = ByteBufferMut::with_capacity(cc.chunk_meta_size_hint());
-            cc.write_chunk_meta(&mut chunk_meta_buffer)
+            let mut chunk_meta_buffer = ByteBufferMut::with_capacity(cc.meta_size_hint());
+            cc.write_meta(&mut chunk_meta_buffer)
                 .map_err(vortex_err_from_pco)?;
             chunk_meta_buffers.push(chunk_meta_buffer.freeze());
 
@@ -424,7 +424,7 @@ impl PcoArray {
                         .page_decompressor(page, page_n_values)
                         .map_err(vortex_err_from_pco)
                         .vortex_expect("page_decompressor should succeed with valid page data");
-                    pd.decompress(&mut decompressed_values[old_len..new_len])
+                    pd.read(&mut decompressed_values[old_len..new_len])
                         .map_err(vortex_err_from_pco)
                         .vortex_expect("decompress should succeed with valid compressed data");
                 } else {