diff --git a/Cargo.lock b/Cargo.lock
index 684265bdb..8ecbba776 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -1018,7 +1018,7 @@ checksum = "c9356095b4b41197bba32173600e1582792cda618f65d12f68e2e77d273413c5"
 
 [[package]]
 name = "hugr"
-version = "0.30.3"
+version = "0.30.4"
 dependencies = [
  "bumpalo",
  "criterion",
@@ -1031,7 +1031,7 @@ dependencies = [
 
 [[package]]
 name = "hugr-cli"
-version = "0.30.3"
+version = "0.30.4"
 dependencies = [
  "anyhow",
  "assert_cmd",
@@ -1056,7 +1056,7 @@ dependencies = [
 
 [[package]]
 name = "hugr-core"
-version = "0.30.3"
+version = "0.30.4"
 dependencies = [
  "anyhow",
  "base64",
@@ -1101,7 +1101,7 @@ dependencies = [
 
 [[package]]
 name = "hugr-llvm"
-version = "0.30.3"
+version = "0.30.4"
 dependencies = [
  "anyhow",
  "cc",
@@ -1122,7 +1122,7 @@ dependencies = [
 
 [[package]]
 name = "hugr-model"
-version = "0.30.3"
+version = "0.30.4"
 dependencies = [
  "anyhow",
  "base64",
@@ -1148,7 +1148,7 @@ dependencies = [
 
 [[package]]
 name = "hugr-persistent"
-version = "0.7.12"
+version = "0.7.13"
 dependencies = [
  "delegate",
  "derive_more 2.1.1",
diff --git a/hugr-cli/Cargo.toml b/hugr-cli/Cargo.toml
index b2db6293d..fc39aed35 100644
--- a/hugr-cli/Cargo.toml
+++ b/hugr-cli/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "hugr-cli"
-version = "0.30.3"
+version = "0.30.4"
 edition = { workspace = true }
 rust-version = { workspace = true }
 license = { workspace = true }
@@ -23,7 +23,7 @@ tracing = ["dep:tracing", "dep:tracing-subscriber"]
 clap = { workspace = true, features = ["derive", "cargo"] }
 clap-verbosity-flag.workspace = true
 derive_more = { workspace = true, features = ["display", "error", "from"] }
-hugr = { path = "../hugr", version = "0.30.3" }
+hugr = { path = "../hugr", version = "0.30.4" }
 serde_json.workspace = true
 serde = { workspace = true, features = ["derive"] }
 clio = { workspace = true, features = ["clap-parse"] }
diff --git a/hugr-core/Cargo.toml b/hugr-core/Cargo.toml
index 89946e1f9..86adb0a88 100644
--- a/hugr-core/Cargo.toml
+++ b/hugr-core/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "hugr-core"
-version = "0.30.3"
+version = "0.30.4"
 edition = { workspace = true }
 rust-version = { workspace = true }
 
@@ -28,7 +28,7 @@ bench = false
 name = "model"
 
 [dependencies]
-hugr-model = { version = "0.30.3", path = "../hugr-model" }
+hugr-model = { version = "0.30.4", path = "../hugr-model" }
 
 cgmath = { workspace = true, features = ["serde"] }
 delegate = { workspace = true }
diff --git a/hugr-llvm/CHANGELOG.md b/hugr-llvm/CHANGELOG.md
index f7d327391..391dea2c9 100644
--- a/hugr-llvm/CHANGELOG.md
+++ b/hugr-llvm/CHANGELOG.md
@@ -1,6 +1,14 @@
 # Changelog
 
 
+## [0.30.4](https://github.com/Quantinuum/hugr/compare/hugr-llvm-v0.30.3...hugr-llvm-v0.30.4) - 2026-11-05
+
+### Bug Fixes
+
+- *(hugr-llvm)* free borrow array mask on discard ([#3321](https://github.com/Quantinuum/hugr/pull/3321))
+- *(hugr-llvm)* free borrow mask when converting to an array ([#3322](https://github.com/Quantinuum/hugr/pull/3322))
+- *(hugr-llvm)* free arrays after unpacking ([#3324](https://github.com/Quantinuum/hugr/pull/3324))
+
 ## [0.30.3](https://github.com/Quantinuum/hugr/compare/hugr-llvm-v0.30.2...hugr-llvm-v0.30.3) - 2026-09-30
 
 ### Documentation
diff --git a/hugr-llvm/Cargo.toml b/hugr-llvm/Cargo.toml
index 9d46581f9..21b029fb6 100644
--- a/hugr-llvm/Cargo.toml
+++ b/hugr-llvm/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "hugr-llvm"
-version = "0.30.3"
+version = "0.30.4"
 description = "A general and extensible crate for lowering HUGRs into LLVM IR"
 
 edition.workspace = true
@@ -26,7 +26,7 @@ workspace = true
 
 [dependencies]
 inkwell = { version = ">=0.9.0, <0.11", default-features = false }
-hugr-core = { path = "../hugr-core", version = "0.30.3" }
+hugr-core = { path = "../hugr-core", version = "0.30.4" }
 anyhow.workspace = true
 itertools.workspace = true
 delegate.workspace = true
diff --git a/hugr-model/Cargo.toml b/hugr-model/Cargo.toml
index c18e6c869..c7b04bb3b 100644
--- a/hugr-model/Cargo.toml
+++ b/hugr-model/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "hugr-model"
-version = "0.30.3"
+version = "0.30.4"
 readme = "README.md"
 documentation = "https://docs.rs/hugr-model/"
 description = "Data model for Quantinuum's HUGR intermediate representation"
diff --git a/hugr-persistent/Cargo.toml b/hugr-persistent/Cargo.toml
index b6dc412cf..30b404855 100644
--- a/hugr-persistent/Cargo.toml
+++ b/hugr-persistent/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "hugr-persistent"
-version = "0.7.12"
+version = "0.7.13"
 edition = { workspace = true }
 rust-version = { workspace = true }
 license = { workspace = true }
@@ -16,7 +16,7 @@ categories = ["compilers", "science::quantum-computing"]
 name = "persistent_walker_example"
 
 [dependencies]
-hugr-core = { path = "../hugr-core", version = "0.30.3" }
+hugr-core = { path = "../hugr-core", version = "0.30.4" }
 
 derive_more = { workspace = true, features = [
     "display",
diff --git a/hugr-py/Cargo.toml b/hugr-py/Cargo.toml
index b0248c545..73bfe0007 100644
--- a/hugr-py/Cargo.toml
+++ b/hugr-py/Cargo.toml
@@ -21,9 +21,9 @@ bench = false
 
 [dependencies]
 bumpalo = { workspace = true, features = ["collections"] }
-hugr-core = { version = "0.30.3", path = "../hugr-core", default-features = false }
-hugr-cli = { version = "0.30.3", path = "../hugr-cli", default-features = false }
-hugr-model = { version = "0.30.3", path = "../hugr-model", default-features = false, features = [
+hugr-core = { version = "0.30.4", path = "../hugr-core", default-features = false }
+hugr-cli = { version = "0.30.4", path = "../hugr-cli", default-features = false }
+hugr-model = { version = "0.30.4", path = "../hugr-model", default-features = false, features = [
     "pyo3",
 ] }
 derive_more = { workspace = true }
diff --git a/hugr/Cargo.toml b/hugr/Cargo.toml
index b20574163..3e60453fd 100644
--- a/hugr/Cargo.toml
+++ b/hugr/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "hugr"
-version = "0.30.3"
+version = "0.30.4"
 edition = { workspace = true }
 rust-version = { workspace = true }
 
@@ -31,10 +31,10 @@ zstd = ["hugr-core/zstd"]
 persistent_unstable = ["hugr-persistent"]
 
 [dependencies]
-hugr-model = { path = "../hugr-model", version = "0.30.3" }
-hugr-core = { path = "../hugr-core", version = "0.30.3" }
-hugr-llvm = { path = "../hugr-llvm", version = "0.30.3", optional = true }
-hugr-persistent = { path = "../hugr-persistent", version = "0.7.12", optional = true }
+hugr-model = { path = "../hugr-model", version = "0.30.4" }
+hugr-core = { path = "../hugr-core", version = "0.30.4" }
+hugr-llvm = { path = "../hugr-llvm", version = "0.30.4", optional = true }
+hugr-persistent = { path = "../hugr-persistent", version = "0.7.13", optional = true }
 
 [dev-dependencies]
 serde_json = { workspace = true }