diff --git a/Cargo.lock b/Cargo.lock
index 8b866e98c0..7e7ef647ad 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -1033,7 +1033,7 @@ dependencies = [
 
 [[package]]
 name = "hugr"
-version = "0.27.0"
+version = "0.27.1"
 dependencies = [
  "bumpalo",
  "criterion",
@@ -1046,7 +1046,7 @@ dependencies = [
 
 [[package]]
 name = "hugr-cli"
-version = "0.27.0"
+version = "0.27.1"
 dependencies = [
  "anyhow",
  "assert_cmd",
@@ -1070,7 +1070,7 @@ dependencies = [
 
 [[package]]
 name = "hugr-core"
-version = "0.27.0"
+version = "0.27.1"
 dependencies = [
  "anyhow",
  "base64",
@@ -1115,7 +1115,7 @@ dependencies = [
 
 [[package]]
 name = "hugr-llvm"
-version = "0.27.0"
+version = "0.27.1"
 dependencies = [
  "anyhow",
  "cc",
@@ -1134,7 +1134,7 @@ dependencies = [
 
 [[package]]
 name = "hugr-model"
-version = "0.27.0"
+version = "0.27.1"
 dependencies = [
  "anyhow",
  "base64",
@@ -1161,7 +1161,7 @@ dependencies = [
 
 [[package]]
 name = "hugr-persistent"
-version = "0.6.0"
+version = "0.6.1"
 dependencies = [
  "delegate",
  "derive_more 2.1.1",
diff --git a/hugr-cli/Cargo.toml b/hugr-cli/Cargo.toml
index 7511a47eaf..75d5fa21bc 100644
--- a/hugr-cli/Cargo.toml
+++ b/hugr-cli/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "hugr-cli"
-version = "0.27.0"
+version = "0.27.1"
 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 = "0.27.0" }
+hugr = { path = "../hugr", version = "0.27.1" }
 serde_json.workspace = true
 serde = { workspace = true, features = ["derive"] }
 clio = { workspace = true, features = ["clap-parse"] }
diff --git a/hugr-core/CHANGELOG.md b/hugr-core/CHANGELOG.md
index ca2d06c526..f715c279d1 100644
--- a/hugr-core/CHANGELOG.md
+++ b/hugr-core/CHANGELOG.md
@@ -1,6 +1,17 @@
 # Changelog
 
 
+## [0.27.1](https://github.com/Quantinuum/hugr/compare/hugr-core-v0.27.0...hugr-core-v0.27.1) - 2026-04-17
+
+### Bug Fixes
+
+- InlineCall produces invalid hugr for polymorphic functions ([#3017](https://github.com/Quantinuum/hugr/pull/3017))
+
+### Testing
+
+- Test execution results of float op LLVM lowering ([#3013](https://github.com/Quantinuum/hugr/pull/3013))
+- Hugr model tests validate payload before roundtrip ([#3016](https://github.com/Quantinuum/hugr/pull/3016))
+
 ## [0.27.0](https://github.com/Quantinuum/hugr/compare/hugr-core-v0.26.1...hugr-core-v0.27.0) - 2026-03-31
 
 ### Bug Fixes
diff --git a/hugr-core/Cargo.toml b/hugr-core/Cargo.toml
index af809c56a6..05045ea23d 100644
--- a/hugr-core/Cargo.toml
+++ b/hugr-core/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "hugr-core"
-version = "0.27.0"
+version = "0.27.1"
 edition = { workspace = true }
 rust-version = { workspace = true }
 
@@ -28,7 +28,7 @@ bench = false
 name = "model"
 
 [dependencies]
-hugr-model = { version = "0.27.0", path = "../hugr-model" }
+hugr-model = { version = "0.27.1", path = "../hugr-model" }
 
 cgmath = { workspace = true, features = ["serde"] }
 delegate = { workspace = true }
diff --git a/hugr-llvm/CHANGELOG.md b/hugr-llvm/CHANGELOG.md
index 57723e3162..007ce0417e 100644
--- a/hugr-llvm/CHANGELOG.md
+++ b/hugr-llvm/CHANGELOG.md
@@ -1,6 +1,16 @@
 # Changelog
 
 
+## [0.27.1](https://github.com/Quantinuum/hugr/compare/hugr-llvm-v0.27.0...hugr-llvm-v0.27.1) - 2026-04-17
+
+### Documentation
+
+- Update README to refer to current LLVM version. ([#3024](https://github.com/Quantinuum/hugr/pull/3024))
+
+### Testing
+
+- Test execution results of float op LLVM lowering ([#3013](https://github.com/Quantinuum/hugr/pull/3013))
+
 ## [0.27.0](https://github.com/Quantinuum/hugr/compare/hugr-llvm-v0.26.1...hugr-llvm-v0.27.0) - 2026-03-31
 
 ### New Features
diff --git a/hugr-llvm/Cargo.toml b/hugr-llvm/Cargo.toml
index 3f83253f74..c57c4afb8f 100644
--- a/hugr-llvm/Cargo.toml
+++ b/hugr-llvm/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "hugr-llvm"
-version = "0.27.0"
+version = "0.27.1"
 description = "A general and extensible crate for lowering HUGRs into LLVM IR"
 
 edition.workspace = true
@@ -26,7 +26,7 @@ workspace = true
 
 [dependencies]
 inkwell = { version = ">=0.7.1, <0.9", default-features = false }
-hugr-core = { path = "../hugr-core", version = "0.27.0" }
+hugr-core = { path = "../hugr-core", version = "0.27.1" }
 anyhow.workspace = true
 itertools.workspace = true
 delegate.workspace = true
diff --git a/hugr-model/CHANGELOG.md b/hugr-model/CHANGELOG.md
index 2d9a558317..60d79681aa 100644
--- a/hugr-model/CHANGELOG.md
+++ b/hugr-model/CHANGELOG.md
@@ -1,6 +1,12 @@
 # Changelog
 
 
+## [0.27.1](https://github.com/Quantinuum/hugr/compare/hugr-model-v0.27.0...hugr-model-v0.27.1) - 2026-04-17
+
+### Testing
+
+- Hugr model tests validate payload before roundtrip ([#3016](https://github.com/Quantinuum/hugr/pull/3016))
+
 ## [0.26.0](https://github.com/Quantinuum/hugr/compare/hugr-model-v0.25.7...hugr-model-v0.26.0) - 2026-03-16
 
 ### Testing
diff --git a/hugr-model/Cargo.toml b/hugr-model/Cargo.toml
index 68435bc521..144ab75993 100644
--- a/hugr-model/Cargo.toml
+++ b/hugr-model/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "hugr-model"
-version = "0.27.0"
+version = "0.27.1"
 readme = "README.md"
 documentation = "https://docs.rs/hugr-model/"
 description = "Data model for Quantinuum's HUGR intermediate representation"
@@ -40,7 +40,7 @@ workspace = true
 
 [dev-dependencies]
 anyhow = { workspace = true }
-hugr-core = { version = "0.27.0", path = "../hugr-core", default-features = false }
+hugr-core = { version = "0.27.1", path = "../hugr-core", default-features = false }
 rstest = { workspace = true }
 pretty_assertions = { workspace = true }
 proptest = { workspace = true }
diff --git a/hugr-persistent/Cargo.toml b/hugr-persistent/Cargo.toml
index 877979b892..a94bca1530 100644
--- a/hugr-persistent/Cargo.toml
+++ b/hugr-persistent/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "hugr-persistent"
-version = "0.6.0"
+version = "0.6.1"
 edition = { workspace = true }
 rust-version = { workspace = true }
 license = { workspace = true }
@@ -16,7 +16,7 @@ categories = ["compilers"]
 name = "persistent_walker_example"
 
 [dependencies]
-hugr-core = { path = "../hugr-core", version = "0.27.0" }
+hugr-core = { path = "../hugr-core", version = "0.27.1" }
 
 derive_more = { workspace = true, features = [
     "display",
diff --git a/hugr-py/Cargo.toml b/hugr-py/Cargo.toml
index bb3926de23..3ae58fe04b 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 = "0.27.0", path = "../hugr-core", default-features = false }
-hugr-cli = { version = "0.27.0", path = "../hugr-cli", default-features = false }
-hugr-model = { version = "0.27.0", path = "../hugr-model", default-features = false, features = [
+hugr-core = { version = "0.27.1", path = "../hugr-core", default-features = false }
+hugr-cli = { version = "0.27.1", path = "../hugr-cli", default-features = false }
+hugr-model = { version = "0.27.1", path = "../hugr-model", default-features = false, features = [
     "pyo3",
 ] }
 pastey.workspace = true
diff --git a/hugr/CHANGELOG.md b/hugr/CHANGELOG.md
index f52a709ead..b786d3eea5 100644
--- a/hugr/CHANGELOG.md
+++ b/hugr/CHANGELOG.md
@@ -1,5 +1,16 @@
 # Changelog
 
+## [0.27.1](https://github.com/Quantinuum/hugr/compare/hugr-v0.27.0...hugr-v0.27.1) - 2026-04-17
+
+### Bug Fixes
+
+- InlineCall produces invalid hugr for polymorphic functions ([#3017](https://github.com/Quantinuum/hugr/pull/3017))
+
+### Testing
+
+- Test execution results of float op LLVM lowering ([#3013](https://github.com/Quantinuum/hugr/pull/3013))
+- Hugr model tests validate payload before roundtrip ([#3016](https://github.com/Quantinuum/hugr/pull/3016))
+
 ## [0.27.0](https://github.com/Quantinuum/hugr/compare/hugr-v0.26.1...hugr-v0.27.0) - 2026-03-31
 
 This release deprecates the JSON serialization format. Now hugrs can be encoded in a readable file
diff --git a/hugr/Cargo.toml b/hugr/Cargo.toml
index 31dc6ad158..a031eeef1b 100644
--- a/hugr/Cargo.toml
+++ b/hugr/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "hugr"
-version = "0.27.0"
+version = "0.27.1"
 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 = "0.27.0" }
-hugr-core = { path = "../hugr-core", version = "0.27.0" }
-hugr-llvm = { path = "../hugr-llvm", version = "0.27.0", optional = true }
-hugr-persistent = { path = "../hugr-persistent", version = "0.6.0", optional = true }
+hugr-model = { path = "../hugr-model", version = "0.27.1" }
+hugr-core = { path = "../hugr-core", version = "0.27.1" }
+hugr-llvm = { path = "../hugr-llvm", version = "0.27.1", optional = true }
+hugr-persistent = { path = "../hugr-persistent", version = "0.6.1", optional = true }
 
 [dev-dependencies]
 serde_json = { workspace = true }