diff --git a/Cargo.lock b/Cargo.lock
index 9e7a678af..b4f663d62 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -2809,7 +2809,7 @@ dependencies = [
 
 [[package]]
 name = "tket"
-version = "0.18.0"
+version = "0.18.1"
 dependencies = [
  "anyhow",
  "ascent",
@@ -2904,7 +2904,7 @@ dependencies = [
 
 [[package]]
 name = "tket-qsystem"
-version = "0.24.0"
+version = "0.24.1"
 dependencies = [
  "anyhow",
  "clap",
diff --git a/badger-optimiser/Cargo.toml b/badger-optimiser/Cargo.toml
index d6eecb70f..748638c6a 100644
--- a/badger-optimiser/Cargo.toml
+++ b/badger-optimiser/Cargo.toml
@@ -16,7 +16,7 @@ tket = { path = "../tket", features = [
     "rewrite-tracing",
     "binary-eccs",
 ] }
-tket-qsystem = { path = "../tket-qsystem", version = "0.24.0" }
+tket-qsystem = { path = "../tket-qsystem", version = "0.24.1" }
 tracing = { workspace = true }
 tracing-subscriber = { workspace = true }
 tracing-appender = { workspace = true }
diff --git a/qis-compiler/Cargo.toml b/qis-compiler/Cargo.toml
index 699ad52c8..ff6d098cd 100644
--- a/qis-compiler/Cargo.toml
+++ b/qis-compiler/Cargo.toml
@@ -20,8 +20,8 @@ serde_json.workspace = true
 tracing.workspace = true
 itertools.workspace = true
 strum.workspace = true
-tket = { path = "../tket", version = "0.18.0" }
-tket-qsystem = { path = "../tket-qsystem", version = "0.24.0", features = [
+tket = { path = "../tket", version = "0.18.1" }
+tket-qsystem = { path = "../tket-qsystem", version = "0.24.1", features = [
     "llvm",
 ] }
 
diff --git a/tket-py/Cargo.toml b/tket-py/Cargo.toml
index 149874e03..69dc222cd 100644
--- a/tket-py/Cargo.toml
+++ b/tket-py/Cargo.toml
@@ -20,11 +20,11 @@ test = false
 bench = false
 
 [dependencies]
-tket = { path = "../tket", version = "0.18.0", features = [
+tket = { path = "../tket", version = "0.18.1", features = [
     "portmatching",
     "binary-eccs",
 ] }
-tket-qsystem = { path = "../tket-qsystem", version = "0.24.0" }
+tket-qsystem = { path = "../tket-qsystem", version = "0.24.1" }
 tket1-passes = { path = "../tket1-passes", version = "0.0.0" }
 
 derive_more = { workspace = true, features = ["into", "from"] }
diff --git a/tket-qec/Cargo.toml b/tket-qec/Cargo.toml
index 31f126d3e..4d5fbaa08 100644
--- a/tket-qec/Cargo.toml
+++ b/tket-qec/Cargo.toml
@@ -20,4 +20,4 @@ workspace = true
 hugr.workspace = true
 semver = "1.0.28"
 strum = { workspace = true, features = ["derive"] }
-tket-qsystem = { version = "0.24.0", path = "../tket-qsystem" }
+tket-qsystem = { version = "0.24.1", path = "../tket-qsystem" }
diff --git a/tket-qsystem/CHANGELOG.md b/tket-qsystem/CHANGELOG.md
index cf11e135e..36f5f559e 100644
--- a/tket-qsystem/CHANGELOG.md
+++ b/tket-qsystem/CHANGELOG.md
@@ -1,6 +1,12 @@
 # Changelog
 
 
+## [0.24.1](https://github.com/Quantinuum/tket2/compare/tket-qsystem-v0.24.0...tket-qsystem-v0.24.1) - 2026-05-05
+
+### Testing
+
+- Pin guppy version in example files, fix test ([#1534](https://github.com/Quantinuum/tket2/pull/1534))
+
 ## [0.24.0](https://github.com/Quantinuum/tket2/compare/tket-qsystem-v0.23.0...tket-qsystem-v0.24.0) - 2026-04-02
 
 ### Bug Fixes
diff --git a/tket-qsystem/Cargo.toml b/tket-qsystem/Cargo.toml
index bf9da5214..c1477624f 100644
--- a/tket-qsystem/Cargo.toml
+++ b/tket-qsystem/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "tket-qsystem"
-version = "0.24.0"
+version = "0.24.1"
 edition.workspace = true
 rust-version.workspace = true
 
@@ -23,7 +23,7 @@ name = "tket-qsystem"
 required-features = ["cli"]
 
 [dependencies]
-tket = { path = "../tket", version = "0.18.0" }
+tket = { path = "../tket", version = "0.18.1" }
 
 hugr.workspace = true
 hugr-core.workspace = true
diff --git a/tket/CHANGELOG.md b/tket/CHANGELOG.md
index 397c56b4a..8ccf9b2db 100644
--- a/tket/CHANGELOG.md
+++ b/tket/CHANGELOG.md
@@ -1,6 +1,22 @@
 # Changelog
 
 
+## [0.18.1](https://github.com/Quantinuum/tket2/compare/tket-v0.18.0...tket-v0.18.1) - 2026-05-05
+
+### Bug Fixes
+
+- Apply modifiers through function calls ([#1531](https://github.com/Quantinuum/tket2/pull/1531))
+- Incorrect matching of pytket parameters to unsupported graph ports ([#1561](https://github.com/Quantinuum/tket2/pull/1561))
+
+### New Features
+
+- *(const-fold)* combine Consts for each out-port; write prepopulated inputs ([#1489](https://github.com/Quantinuum/tket2/pull/1489))
+- InlineFunctionsPass ([#1524](https://github.com/Quantinuum/tket2/pull/1524))
+
+### Testing
+
+- Pin guppy version in example files, fix test ([#1534](https://github.com/Quantinuum/tket2/pull/1534))
+
 ## [0.18.0](https://github.com/Quantinuum/tket2/compare/tket-v0.17.0...tket-v0.18.0) - 2026-04-02
 
 This release bumps `hugr` to 0.27.0 and reworks the pytket encoding/decoding API to use raw `Hugr`s.
diff --git a/tket/Cargo.toml b/tket/Cargo.toml
index 350740203..c3dce8ddc 100644
--- a/tket/Cargo.toml
+++ b/tket/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "tket"
-version = "0.18.0"
+version = "0.18.1"
 edition = { workspace = true }
 rust-version = { workspace = true }
 
diff --git a/tket1-passes/Cargo.toml b/tket1-passes/Cargo.toml
index 285cc344f..ba25f63ce 100644
--- a/tket1-passes/Cargo.toml
+++ b/tket1-passes/Cargo.toml
@@ -31,7 +31,7 @@ rayon.workspace = true
 
 # Used for integration tests
 hugr = { workspace = true }
-tket = { path = "../tket", version = "0.18.0" }
+tket = { path = "../tket", version = "0.18.1" }
 
 [lints]
 workspace = true