diff --git a/Cargo.lock b/Cargo.lock
index 2cb835c4..7f07f1be 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -735,9 +735,9 @@ dependencies = [
 
 [[package]]
 name = "hugr"
-version = "0.7.0"
+version = "0.8.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "93a66a8749a4713a4421aaf479e9db1f281abbd7eaf2f03ae16e772c1b248f7c"
+checksum = "de2694a502f45f121f16b43b18b2d23e7b10e02140c7f15f0b75bb0f1fcd52bc"
 dependencies = [
  "hugr-core",
  "hugr-passes",
@@ -745,9 +745,9 @@ dependencies = [
 
 [[package]]
 name = "hugr-cli"
-version = "0.1.3"
+version = "0.1.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b0cab2e45d6198f3a00eb8fe8951bb2cf6ecde81f562e021079a65b3aa0ee81f"
+checksum = "55a6e94c3256d4d0e8a627861b77b0880ce9e772dd76613f8e53bed2dfa94233"
 dependencies = [
  "clap",
  "clap-stdin",
@@ -759,9 +759,9 @@ dependencies = [
 
 [[package]]
 name = "hugr-core"
-version = "0.4.0"
+version = "0.5.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "fd3a6cde9950d93a466b63e43777651ecd8becccf2d9bffa857d77301a280541"
+checksum = "6a8c876db355d019432300959c916e783c5cb63d9454fab353ef122c95fc08aa"
 dependencies = [
  "bitvec",
  "cgmath",
@@ -790,9 +790,9 @@ dependencies = [
 
 [[package]]
 name = "hugr-passes"
-version = "0.4.0"
+version = "0.5.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a034c5f270b5827418acee2e867423f57c030bb13685d715df12281865b78bda"
+checksum = "8c3ce02c8ff515af36391fa253ef52d43be3597d0547da2d4bde1ee8de84b4d5"
 dependencies = [
  "hugr-core",
  "itertools 0.13.0",
@@ -1781,9 +1781,9 @@ checksum = "1f3ccbac311fea05f86f61904b462b55fb3df8837a366dfc601a0161d0532f20"
 
 [[package]]
 name = "tket-json-rs"
-version = "0.4.2"
+version = "0.5.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b2ca98b0f30f8dfb05a77081305b34891e2362331253cb9bf3c10efa879dbbb3"
+checksum = "37b6cb2ca748ea4ef01553d16c60aaf3ac728749ff591c87df1da0ccc357bb31"
 dependencies = [
  "pyo3",
  "pythonize",
diff --git a/Cargo.toml b/Cargo.toml
index 8ad181af..486e2b02 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -24,13 +24,13 @@ missing_docs = "warn"
 
 [workspace.dependencies]
 
-hugr = "0.7.0"
-hugr-cli = "0.1.3"
-hugr-core = "0.4.0"
+hugr = "0.8.0"
+hugr-cli = "0.1.4"
+hugr-core = "0.5.0"
 portgraph = "0.12"
 pyo3 = "0.21.2"
 itertools = "0.13.0"
-tket-json-rs = "0.4.2"
+tket-json-rs = "0.5.0"
 tracing = "0.1.37"
 portmatching = "0.3.1"
 bytemuck = "1.16.1"
diff --git a/tket2/src/passes/pytket.rs b/tket2/src/passes/pytket.rs
index b9f1d1fb..e2275b4c 100644
--- a/tket2/src/passes/pytket.rs
+++ b/tket2/src/passes/pytket.rs
@@ -81,8 +81,7 @@ mod test {
                     )?;
 
                     circ = {
-                        let mut dfg =
-                            cfg.simple_entry_builder(two_qbs.clone(), 1, ExtensionSet::new())?;
+                        let mut dfg = cfg.simple_entry_builder(two_qbs.clone(), 1)?;
                         let [q1, q2] = dfg.input_wires_arr();
 
                         let [q1] = dfg.add_dataflow_op(Tk2Op::H, [q1])?.outputs_arr();
diff --git a/tket2/src/serialize/pytket/op/native.rs b/tket2/src/serialize/pytket/op/native.rs
index 719f9821..23848070 100644
--- a/tket2/src/serialize/pytket/op/native.rs
+++ b/tket2/src/serialize/pytket/op/native.rs
@@ -127,14 +127,12 @@ impl NativeOp {
 
         let params = (num_params > 0).then(|| vec!["".into(); num_params]);
 
-        Some(circuit_json::Operation {
-            op_type: serial_op,
-            n_qb: Some(num_qubits as u32),
-            params,
-            op_box: None,
-            signature: Some([vec!["Q".into(); num_qubits], vec!["B".into(); num_bits]].concat()),
-            conditional: None,
-        })
+        let mut op = circuit_json::Operation::default();
+        op.op_type = serial_op;
+        op.n_qb = Some(num_qubits as u32);
+        op.params = params;
+        op.signature = Some([vec!["Q".into(); num_qubits], vec!["B".into(); num_bits]].concat());
+        Some(op)
     }
 
     /// Returns the dataflow signature for this operation.