diff --git a/rust/Cargo.lock b/rust/Cargo.lock
index 125a38f4e..175d73418 100644
--- a/rust/Cargo.lock
+++ b/rust/Cargo.lock
@@ -444,9 +444,9 @@ dependencies = [
 
 [[package]]
 name = "clap"
-version = "4.5.27"
+version = "4.5.31"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "769b0145982b4b48713e01ec42d61614425f27b7058bda7180a3a41f30104796"
+checksum = "027bb0d98429ae334a8698531da7077bdf906419543a35a55c2cb1b66437d767"
 dependencies = [
  "clap_builder",
  "clap_derive",
@@ -454,9 +454,9 @@ dependencies = [
 
 [[package]]
 name = "clap_builder"
-version = "4.5.27"
+version = "4.5.31"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "1b26884eb4b57140e4d2d93652abfa49498b938b3c9179f9fc487b0acc3edad7"
+checksum = "5589e0cba072e0f3d23791efac0fd8627b49c829c196a492e88168e6a669d863"
 dependencies = [
  "anstream",
  "anstyle",
@@ -468,9 +468,9 @@ dependencies = [
 
 [[package]]
 name = "clap_derive"
-version = "4.5.24"
+version = "4.5.28"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "54b755194d6389280185988721fffba69495eed5ee9feeee9a599b53db80318c"
+checksum = "bf4ced95c6f4a675af3da73304b9ac4ed991640c36374e4b46795c49e17cf1ed"
 dependencies = [
  "heck",
  "proc-macro2",
@@ -1653,6 +1653,17 @@ dependencies = [
  "wasm-bindgen",
 ]
 
+[[package]]
+name = "kcl-bumper"
+version = "0.1.45"
+dependencies = [
+ "anyhow",
+ "clap",
+ "semver",
+ "serde",
+ "toml_edit",
+]
+
 [[package]]
 name = "kcl-derive-docs"
 version = "0.1.45"
@@ -1768,7 +1779,7 @@ dependencies = [
 
 [[package]]
 name = "kcl-to-core"
-version = "0.1.0"
+version = "0.1.45"
 dependencies = [
  "anyhow",
  "async-trait",
@@ -1782,7 +1793,7 @@ dependencies = [
 
 [[package]]
 name = "kcl-wasm-lib"
-version = "0.1.0"
+version = "0.1.45"
 dependencies = [
  "bson",
  "console_error_panic_hook",
diff --git a/rust/Cargo.toml b/rust/Cargo.toml
index cd9ff4035..bd6e696da 100644
--- a/rust/Cargo.toml
+++ b/rust/Cargo.toml
@@ -1,6 +1,7 @@
 [workspace]
 resolver = "2"
 members = [
+	"kcl-bumper",
 	"kcl-derive-docs",
 	"kcl-lib",
 	"kcl-python-bindings",
diff --git a/rust/README.md b/rust/README.md
new file mode 100644
index 000000000..c5b361038
--- /dev/null
+++ b/rust/README.md
@@ -0,0 +1,23 @@
+# Rust Crates
+
+### Releasing
+
+1. Make sure your working directory is this directory.
+1. Bump the versions of the crates:
+    ```bash
+    just bump-kcl-crate-versions 
+    ```
+3. Commit the changes:
+    ```bash
+    git add .
+    git commit -m "Bump versions"
+    ```
+4. Push the changes and get your PR approved.
+5. Publish the crates:
+    ```bash
+    just publish-kcl {version}
+    ```
+    - This will publish the relevant crates and push a new tag with the prefix
+    `kcl-`. DO NOT SET THE PREFIX TO `kcl-` when you run the command. The `just`
+    command will do that for you.
+    - The tag will then trigger the release of kcl-python-bindings.
diff --git a/rust/justfile b/rust/justfile
index 25920beb6..7b4c32f39 100644
--- a/rust/justfile
+++ b/rust/justfile
@@ -44,6 +44,11 @@ overwrite-sim-test test_name:
 test:
     export RUST_BRACKTRACE="full" && cargo nextest run --workspace --no-fail-fast
 
+bump-kcl-crate-versions bump='patch':
+    # First build the kcl-bumper tool.
+    cargo build -p kcl-bumper
+    ./target/debug/kcl-bumper --bump {{bump}}
+
 publish-kcl version:
     git tag kcl-{{version}}
     cargo publish -p kcl-derive-docs
diff --git a/rust/kcl-bumper/Cargo.toml b/rust/kcl-bumper/Cargo.toml
new file mode 100644
index 000000000..b1482fc8f
--- /dev/null
+++ b/rust/kcl-bumper/Cargo.toml
@@ -0,0 +1,21 @@
+
+[package]
+name = "kcl-bumper"
+version = "0.1.45"
+edition = "2021"
+repository = "https://github.com/KittyCAD/modeling-api"
+rust-version = "1.76"
+description = "Bumps versions in Cargo.toml"
+publish = false
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]
+anyhow = { workspace = true }
+clap = { version = "4.5.31", features = ["derive"] }
+semver = "1.0.25"
+serde = { workspace = true }
+toml_edit = "0.22.16"
+
+[lints]
+workspace = true
+
diff --git a/rust/kcl-bumper/src/main.rs b/rust/kcl-bumper/src/main.rs
new file mode 100644
index 000000000..b74f526c2
--- /dev/null
+++ b/rust/kcl-bumper/src/main.rs
@@ -0,0 +1,159 @@
+//! Bumps versions in Cargo.toml.
+use anyhow::{Context, Result};
+use clap::Parser;
+use toml_edit::{value, DocumentMut};
+
+fn main() -> Result<()> {
+    let args = Args::parse();
+    // Get all the directories in the current directory.
+    let mut dirs = std::fs::read_dir(".").context("Could not read current directory")?;
+    for dir in dirs.by_ref() {
+        let dir = dir.context("Could not read directory")?;
+        if !(dir.path().display().to_string().starts_with("./kcl-") && dir.path().is_dir()) {
+            // We only care about the kcl-* directories.
+            continue;
+        }
+        println!("Found directory: {}", dir.path().display());
+        run_on_manifest(dir.path().join("Cargo.toml"), &args)?;
+        eprintln!("Bumped version in {}", dir.path().display());
+    }
+
+    Ok(())
+}
+
+fn run_on_manifest(manifest_path: std::path::PathBuf, args: &Args) -> Result<()> {
+    let cargo_dot_toml = std::fs::read(&manifest_path).context("Could not read chosen Cargo.toml")?;
+    let cargo_dot_toml = String::from_utf8(cargo_dot_toml).context("Invalid UTF-8 in chosen Cargo.toml")?;
+    let mut doc = cargo_dot_toml
+        .parse::<DocumentMut>()
+        .context("Invalid TOML in Cargo.toml")?;
+    update_semver(args.bump, &mut doc).context("Could not bump semver")?;
+    std::fs::write(manifest_path, doc.to_string()).context("Could not write updated Cargo.toml")?;
+    Ok(())
+}
+
+fn parse_version(cargo_dot_toml: &mut DocumentMut) -> Result<semver::Version> {
+    let current_version = cargo_dot_toml["package"]["version"]
+        .to_string()
+        // Clean quotations and whitespace.
+        .replace([' ', '"'], "");
+
+    semver::Version::parse(&current_version).context("Could not parse semver version")
+}
+
+/// Update the given TOML document (for a Cargo.toml file) by bumping its `version` field.
+/// What kind of bump (major, minor, patch) is given by the `bump` argument.
+fn update_semver(bump: Option<SemverBump>, cargo_dot_toml: &mut DocumentMut) -> Result<()> {
+    let current_version = parse_version(cargo_dot_toml)?;
+
+    // Get the next version.
+    let Some(bump) = bump else {
+        println!("{current_version}");
+        return Ok(());
+    };
+    let mut next_version = current_version;
+    match bump {
+        SemverBump::Major => next_version.major += 1,
+        SemverBump::Minor => next_version.minor += 1,
+        SemverBump::Patch => next_version.patch += 1,
+    };
+
+    // Update the Cargo.toml
+    cargo_dot_toml["package"]["version"] = value(next_version.to_string());
+    println!("{next_version}");
+    Ok(())
+}
+
+/// Bumps versions in Cargo.toml
+#[derive(Parser, Debug)]
+struct Args {
+    /// What part of the semantic version (major, minor or patch) to bump.
+    /// If not given, bumper will just print the current version and then exit.
+    #[arg(short, long)]
+    bump: Option<SemverBump>,
+}
+
+#[derive(Debug, Clone, Copy)]
+enum SemverBump {
+    Major,
+    Minor,
+    Patch,
+}
+
+impl std::str::FromStr for SemverBump {
+    type Err = String;
+
+    fn from_str(s: &str) -> Result<Self, Self::Err> {
+        match s {
+            "major" => Ok(Self::Major),
+            "minor" => Ok(Self::Minor),
+            "patch" => Ok(Self::Patch),
+            _ => Err("valid options are 'major', 'minor' and 'patch'.".to_owned()),
+        }
+    }
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    const EXAMPLE: &str = r#"
+[package]
+name = "bumper"
+version = "0.1.0"
+
+[dependencies]
+anyhow = "1.0.81"
+        "#;
+
+    #[test]
+    fn test_bump_minor() {
+        let mut cargo_dot_toml = EXAMPLE.parse::<DocumentMut>().unwrap();
+        update_semver(Some(SemverBump::Minor), &mut cargo_dot_toml).unwrap();
+        assert_eq!(
+            cargo_dot_toml.to_string(),
+            r#"
+[package]
+name = "bumper"
+version = "0.2.0"
+
+[dependencies]
+anyhow = "1.0.81"
+        "#
+        );
+    }
+
+    #[test]
+    fn test_bump_major() {
+        let mut cargo_dot_toml = EXAMPLE.parse::<DocumentMut>().unwrap();
+        update_semver(Some(SemverBump::Major), &mut cargo_dot_toml).unwrap();
+        assert_eq!(
+            cargo_dot_toml.to_string(),
+            r#"
+[package]
+name = "bumper"
+version = "1.1.0"
+
+[dependencies]
+anyhow = "1.0.81"
+        "#
+        );
+    }
+
+    #[test]
+    fn test_bump_patch() {
+        let mut cargo_dot_toml = EXAMPLE.parse::<DocumentMut>().unwrap();
+        update_semver(Some(SemverBump::Patch), &mut cargo_dot_toml).unwrap();
+        assert_eq!(
+            cargo_dot_toml.to_string(),
+            r#"
+[package]
+name = "bumper"
+version = "0.1.1"
+
+[dependencies]
+anyhow = "1.0.81"
+        "#
+        );
+    }
+}
diff --git a/rust/kcl-to-core/Cargo.toml b/rust/kcl-to-core/Cargo.toml
index 3576e0c5f..35fc112c8 100644
--- a/rust/kcl-to-core/Cargo.toml
+++ b/rust/kcl-to-core/Cargo.toml
@@ -1,10 +1,11 @@
 [package]
 name = "kcl-to-core"
 description = "Utility methods to convert kcl to engine core executable tests"
-version = "0.1.0"
+version = "0.1.45"
 edition = "2021"
 license = "MIT"
 repository = "https://github.com/KittyCAD/modeling-app"
+publish = false
 
 [lib]
 
diff --git a/rust/kcl-wasm-lib/Cargo.toml b/rust/kcl-wasm-lib/Cargo.toml
index a93cf11e2..069f9597e 100644
--- a/rust/kcl-wasm-lib/Cargo.toml
+++ b/rust/kcl-wasm-lib/Cargo.toml
@@ -1,9 +1,10 @@
 [package]
 name = "kcl-wasm-lib"
-version = "0.1.0"
+version = "0.1.45"
 edition = "2021"
 repository = "https://github.com/KittyCAD/modeling-app"
 rust-version = "1.83"
+publish = false
 
 [lib]
 crate-type = ["cdylib"]