diff --git a/Cargo.lock b/Cargo.lock
index 1f1647a..524e227 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -137,6 +137,79 @@ version = "1.5.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "c08606f8c3cbf4ce6ec8e28fb0014a2c086708fe954eaa885384a6165172e7e8"
 
+[[package]]
+name = "axoasset"
+version = "1.4.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a07b94735e2775756d9a5b6422bd49ee089de3c3f39383489e20ea748b4ee690"
+dependencies = [
+ "camino",
+ "image",
+ "lazy_static",
+ "miette",
+ "mime",
+ "reqwest",
+ "serde",
+ "serde_json",
+ "thiserror 2.0.12",
+ "url",
+ "walkdir",
+]
+
+[[package]]
+name = "axoprocess"
+version = "0.2.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8a4b4798a6c02e91378537c63cd6e91726900b595450daa5d487bc3c11e95e1b"
+dependencies = [
+ "miette",
+ "thiserror 2.0.12",
+ "tracing",
+]
+
+[[package]]
+name = "axotag"
+version = "0.3.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "dc923121fbc4cc72e9008436b5650b98e56f94b5799df59a1b4f572b5c6a7e6b"
+dependencies = [
+ "miette",
+ "semver",
+ "thiserror 2.0.12",
+]
+
+[[package]]
+name = "axoupdater"
+version = "0.9.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "dc482a1926df098f4e3806b834f3fe73a1ab54b24ab0ac481f72de479af5e982"
+dependencies = [
+ "axoasset",
+ "axoprocess",
+ "axotag",
+ "camino",
+ "gazenot",
+ "homedir",
+ "miette",
+ "self-replace",
+ "serde",
+ "tempfile",
+ "thiserror 2.0.12",
+ "url",
+]
+
+[[package]]
+name = "backon"
+version = "0.4.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d67782c3f868daa71d3533538e98a8e13713231969def7536e8039606fc46bf0"
+dependencies = [
+ "fastrand",
+ "futures-core",
+ "pin-project",
+ "tokio",
+]
+
 [[package]]
 name = "backtrace"
 version = "0.3.75"
@@ -198,6 +271,18 @@ version = "3.19.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "46c5e41b57b8bba42a04676d81cb89e9ee8e859a1a66f80a5a72e1cb76b34d43"
 
+[[package]]
+name = "bytemuck"
+version = "1.24.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1fbdf580320f38b612e485521afda1ee26d10cc9884efaaa750d383e13e3c5f4"
+
+[[package]]
+name = "byteorder-lite"
+version = "0.1.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8f1fe948ff07f4bd06c30984e69f5b4899c516a3ef74f34df92a2df2ab535495"
+
 [[package]]
 name = "bytes"
 version = "1.10.1"
@@ -615,6 +700,12 @@ version = "0.3.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "fea41bba32d969b513997752735605054bc0dfa92b4c56bf1189f2e174be7a10"
 
+[[package]]
+name = "dyn-clone"
+version = "1.0.20"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d0881ea181b1df73ff77ffaaf9c7544ecc11e82fba9b5f27b262a3c73a332555"
+
 [[package]]
 name = "either"
 version = "1.15.0"
@@ -782,6 +873,25 @@ dependencies = [
  "slab",
 ]
 
+[[package]]
+name = "gazenot"
+version = "0.3.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "7628c2e8e192258187c04c7632aa417b17d4b290b2c233c5f423c51119018db8"
+dependencies = [
+ "axoasset",
+ "backon",
+ "camino",
+ "miette",
+ "schemars",
+ "serde",
+ "serde_json",
+ "thiserror 1.0.69",
+ "tokio",
+ "tracing",
+ "url",
+]
+
 [[package]]
 name = "generic-array"
 version = "0.14.7"
@@ -917,6 +1027,18 @@ dependencies = [
  "windows-sys 0.59.0",
 ]
 
+[[package]]
+name = "homedir"
+version = "0.3.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "68df315d2857b2d8d2898be54a85e1d001bbbe0dbb5f8ef847b48dd3a23c4527"
+dependencies = [
+ "cfg-if",
+ "nix",
+ "widestring",
+ "windows",
+]
+
 [[package]]
 name = "http"
 version = "1.3.1"
@@ -1155,6 +1277,18 @@ dependencies = [
  "winapi-util",
 ]
 
+[[package]]
+name = "image"
+version = "0.25.8"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "529feb3e6769d234375c4cf1ee2ce713682b8e76538cb13f9fc23e1400a591e7"
+dependencies = [
+ "bytemuck",
+ "byteorder-lite",
+ "moxcms",
+ "num-traits",
+]
+
 [[package]]
 name = "indexmap"
 version = "2.10.0"
@@ -1384,6 +1518,12 @@ dependencies = [
  "syn",
 ]
 
+[[package]]
+name = "mime"
+version = "0.3.17"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "6877bb514081ee2a7ff5ef9de3281f14a4dd4bceac4c09388074a6b5df8a139a"
+
 [[package]]
 name = "miniz_oxide"
 version = "0.8.9"
@@ -1428,6 +1568,28 @@ dependencies = [
  "tokio",
 ]
 
+[[package]]
+name = "moxcms"
+version = "0.7.9"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "0fbdd3d7436f8b5e892b8b7ea114271ff0fa00bc5acae845d53b07d498616ef6"
+dependencies = [
+ "num-traits",
+ "pxfm",
+]
+
+[[package]]
+name = "nix"
+version = "0.30.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "74523f3a35e05aba87a1d978330aef40f67b0304ac79c1c00b294c9830543db6"
+dependencies = [
+ "bitflags",
+ "cfg-if",
+ "cfg_aliases",
+ "libc",
+]
+
 [[package]]
 name = "nu-ansi-term"
 version = "0.50.1"
@@ -1529,6 +1691,26 @@ version = "2.3.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "e3148f5046208a5d56bcfc03053e3ca6334e51da8dfb19b6cdc8b306fae3283e"
 
+[[package]]
+name = "pin-project"
+version = "1.1.10"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "677f1add503faace112b9f1373e43e9e054bfdd22ff1a63c1bc485eaec6a6a8a"
+dependencies = [
+ "pin-project-internal",
+]
+
+[[package]]
+name = "pin-project-internal"
+version = "1.1.10"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "6e918e4ff8c4549eb882f14b3a4bc8c8bc93de829416eacf579f1207a8fbf861"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn",
+]
+
 [[package]]
 name = "pin-project-lite"
 version = "0.2.16"
@@ -1639,6 +1821,15 @@ dependencies = [
  "unicode-ident",
 ]
 
+[[package]]
+name = "pxfm"
+version = "0.1.25"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a3cbdf373972bf78df4d3b518d07003938e2c7d1fb5891e55f9cb6df57009d84"
+dependencies = [
+ "num-traits",
+]
+
 [[package]]
 name = "quinn"
 version = "0.11.8"
@@ -1653,7 +1844,7 @@ dependencies = [
  "rustc-hash",
  "rustls",
  "socket2 0.5.10",
- "thiserror",
+ "thiserror 2.0.12",
  "tokio",
  "tracing",
  "web-time",
@@ -1674,7 +1865,7 @@ dependencies = [
  "rustls",
  "rustls-pki-types",
  "slab",
- "thiserror",
+ "thiserror 2.0.12",
  "tinyvec",
  "tracing",
  "web-time",
@@ -1784,7 +1975,7 @@ checksum = "dd6f9d3d47bdd2ad6945c5015a226ec6155d0bcdfd8f7cd29f86b71f8de99d2b"
 dependencies = [
  "getrandom 0.2.16",
  "libredox",
- "thiserror",
+ "thiserror 2.0.12",
 ]
 
 [[package]]
@@ -1957,6 +2148,7 @@ version = "0.2.0"
 dependencies = [
  "anstream",
  "assert_fs",
+ "axoupdater",
  "bytesize",
  "camino",
  "camino-tempfile-ext",
@@ -1992,7 +2184,7 @@ dependencies = [
  "shellexpand",
  "tar",
  "tempfile",
- "thiserror",
+ "thiserror 2.0.12",
  "tokio",
  "tracing",
  "tracing-indicatif",
@@ -2049,7 +2241,7 @@ dependencies = [
  "sha1",
  "sha2",
  "tar",
- "thiserror",
+ "thiserror 2.0.12",
 ]
 
 [[package]]
@@ -2064,7 +2256,7 @@ dependencies = [
  "rv-gem-types",
  "saphyr",
  "saphyr-parser",
- "thiserror",
+ "thiserror 2.0.12",
  "winnow",
 ]
 
@@ -2077,7 +2269,7 @@ dependencies = [
  "once_cell",
  "regex",
  "rv-version",
- "thiserror",
+ "thiserror 2.0.12",
 ]
 
 [[package]]
@@ -2090,7 +2282,7 @@ dependencies = [
  "miette",
  "rv-version",
  "serde",
- "thiserror",
+ "thiserror 2.0.12",
  "winnow",
 ]
 
@@ -2103,7 +2295,7 @@ dependencies = [
  "rv-cache",
  "serde",
  "serde_with",
- "thiserror",
+ "thiserror 2.0.12",
  "tracing",
 ]
 
@@ -2111,7 +2303,7 @@ dependencies = [
 name = "rv-version"
 version = "0.1.0"
 dependencies = [
- "thiserror",
+ "thiserror 2.0.12",
 ]
 
 [[package]]
@@ -2161,6 +2353,30 @@ dependencies = [
  "windows-sys 0.59.0",
 ]
 
+[[package]]
+name = "schemars"
+version = "0.8.22"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "3fbf2ae1b8bc8e02df939598064d22402220cd5bbcca1c76f7d6a310974d5615"
+dependencies = [
+ "dyn-clone",
+ "schemars_derive",
+ "serde",
+ "serde_json",
+]
+
+[[package]]
+name = "schemars_derive"
+version = "0.8.22"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "32e265784ad618884abaea0600a9adf15393368d840e0222d101a072f3f7534d"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "serde_derive_internals",
+ "syn",
+]
+
 [[package]]
 name = "scopeguard"
 version = "1.2.0"
@@ -2196,6 +2412,23 @@ dependencies = [
  "libc",
 ]
 
+[[package]]
+name = "self-replace"
+version = "1.5.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "03ec815b5eab420ab893f63393878d89c90fdd94c0bcc44c07abb8ad95552fb7"
+dependencies = [
+ "fastrand",
+ "tempfile",
+ "windows-sys 0.52.0",
+]
+
+[[package]]
+name = "semver"
+version = "1.0.27"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d767eb0aabc880b29956c35734170f26ed551a859dbd361d140cdbeca61ab1e2"
+
 [[package]]
 name = "serde"
 version = "1.0.228"
@@ -2226,6 +2459,17 @@ dependencies = [
  "syn",
 ]
 
+[[package]]
+name = "serde_derive_internals"
+version = "0.29.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "18d26a20a969b9e3fdf2fc2d9f21eda6c40e2de84c9408bb5d3b05d499aae711"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn",
+]
+
 [[package]]
 name = "serde_json"
 version = "1.0.140"
@@ -2492,13 +2736,33 @@ dependencies = [
  "unicode-width 0.2.1",
 ]
 
+[[package]]
+name = "thiserror"
+version = "1.0.69"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b6aaf5339b578ea85b50e080feb250a3e8ae8cfcdff9a461c9ec2904bc923f52"
+dependencies = [
+ "thiserror-impl 1.0.69",
+]
+
 [[package]]
 name = "thiserror"
 version = "2.0.12"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "567b8a2dae586314f7be2a752ec7474332959c6460e02bde30d702a66d488708"
 dependencies = [
- "thiserror-impl",
+ "thiserror-impl 2.0.12",
+]
+
+[[package]]
+name = "thiserror-impl"
+version = "1.0.69"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "4fee6c4efc90059e10f81e6d42c60a18f76588c3d74cb83a0b242a2b6c7504c1"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn",
 ]
 
 [[package]]
@@ -2662,6 +2926,7 @@ version = "0.1.41"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "784e0ac535deb450455cbfa28a6f0df145ea1bb7ae51b821cf5e7927fdcfbdd0"
 dependencies = [
+ "log",
  "pin-project-lite",
  "tracing-attributes",
  "tracing-core",
@@ -2807,6 +3072,7 @@ dependencies = [
  "form_urlencoded",
  "idna",
  "percent-encoding",
+ "serde",
 ]
 
 [[package]]
@@ -3013,6 +3279,12 @@ dependencies = [
  "rustls-pki-types",
 ]
 
+[[package]]
+name = "widestring"
+version = "1.2.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "72069c3113ab32ab29e5584db3c6ec55d416895e60715417b5b883a357c3e471"
+
 [[package]]
 name = "winapi-util"
 version = "0.1.9"
@@ -3022,6 +3294,108 @@ dependencies = [
  "windows-sys 0.59.0",
 ]
 
+[[package]]
+name = "windows"
+version = "0.61.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9babd3a767a4c1aef6900409f85f5d53ce2544ccdfaa86dad48c91782c6d6893"
+dependencies = [
+ "windows-collections",
+ "windows-core",
+ "windows-future",
+ "windows-link",
+ "windows-numerics",
+]
+
+[[package]]
+name = "windows-collections"
+version = "0.2.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "3beeceb5e5cfd9eb1d76b381630e82c4241ccd0d27f1a39ed41b2760b255c5e8"
+dependencies = [
+ "windows-core",
+]
+
+[[package]]
+name = "windows-core"
+version = "0.61.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "c0fdd3ddb90610c7638aa2b3a3ab2904fb9e5cdbecc643ddb3647212781c4ae3"
+dependencies = [
+ "windows-implement",
+ "windows-interface",
+ "windows-link",
+ "windows-result",
+ "windows-strings",
+]
+
+[[package]]
+name = "windows-future"
+version = "0.2.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "fc6a41e98427b19fe4b73c550f060b59fa592d7d686537eebf9385621bfbad8e"
+dependencies = [
+ "windows-core",
+ "windows-link",
+ "windows-threading",
+]
+
+[[package]]
+name = "windows-implement"
+version = "0.60.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "053e2e040ab57b9dc951b72c264860db7eb3b0200ba345b4e4c3b14f67855ddf"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn",
+]
+
+[[package]]
+name = "windows-interface"
+version = "0.59.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "3f316c4a2570ba26bbec722032c4099d8c8bc095efccdc15688708623367e358"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn",
+]
+
+[[package]]
+name = "windows-link"
+version = "0.1.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5e6ad25900d524eaabdbbb96d20b4311e1e7ae1699af4fb28c17ae66c80d798a"
+
+[[package]]
+name = "windows-numerics"
+version = "0.2.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9150af68066c4c5c07ddc0ce30421554771e528bde427614c61038bc2c92c2b1"
+dependencies = [
+ "windows-core",
+ "windows-link",
+]
+
+[[package]]
+name = "windows-result"
+version = "0.3.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "56f42bd332cc6c8eac5af113fc0c1fd6a8fd2aa08a0119358686e5160d0586c6"
+dependencies = [
+ "windows-link",
+]
+
+[[package]]
+name = "windows-strings"
+version = "0.4.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "56e6c93f3a0c3b36176cb1327a4958a0353d5d166c2a35cb268ace15e91d3b57"
+dependencies = [
+ "windows-link",
+]
+
 [[package]]
 name = "windows-sys"
 version = "0.52.0"
@@ -3081,6 +3455,15 @@ dependencies = [
  "windows_x86_64_msvc 0.53.0",
 ]
 
+[[package]]
+name = "windows-threading"
+version = "0.1.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b66463ad2e0ea3bbf808b7f1d371311c80e115c0b71d60efc142cafbcfb057a6"
+dependencies = [
+ "windows-link",
+]
+
 [[package]]
 name = "windows_aarch64_gnullvm"
 version = "0.52.6"
diff --git a/Cargo.toml b/Cargo.toml
index 2b066b5..9bbc3db 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -15,6 +15,7 @@ resolver = "2"
 
 [workspace.dependencies]
 # External dependencies
+axoupdater = "0.9.1"
 anstream = "0.6.19"
 assert_fs = "1.1.3"
 bytesize = "2.0.1"
diff --git a/crates/rv/Cargo.toml b/crates/rv/Cargo.toml
index 52b4d0e..2bb6b47 100644
--- a/crates/rv/Cargo.toml
+++ b/crates/rv/Cargo.toml
@@ -9,6 +9,7 @@ homepage = "https://spinel.coop/rv"
 default-run = "rv"
 
 [dependencies]
+axoupdater = { workspace = true }
 clap = { workspace = true, features = ["derive", "env"] }
 clap_derive = { workspace = true }
 indicatif = { workspace = true, features = ["rayon"] }
diff --git a/crates/rv/src/commands.rs b/crates/rv/src/commands.rs
index 1c3a208..329bfa2 100644
--- a/crates/rv/src/commands.rs
+++ b/crates/rv/src/commands.rs
@@ -1,3 +1,4 @@
 pub mod cache;
 pub mod ruby;
+pub mod selfupdate;
 pub mod shell;
diff --git a/crates/rv/src/commands/selfupdate.rs b/crates/rv/src/commands/selfupdate.rs
new file mode 100644
index 0000000..6b4870c
--- /dev/null
+++ b/crates/rv/src/commands/selfupdate.rs
@@ -0,0 +1,12 @@
+use axoupdater::AxoUpdater;
+use miette::{IntoDiagnostic, Result};
+
+pub async fn selfupdate() -> Result<()> {
+    if AxoUpdater::new_for("rv").load_receipt()?.run().await?.is_some() {
+        println!("Update installed!");
+    } else {
+        println!("rv is already up to date!");
+    }
+
+    Ok(())
+}
diff --git a/crates/rv/src/main.rs b/crates/rv/src/main.rs
index 4fffe58..3282fc0 100644
--- a/crates/rv/src/main.rs
+++ b/crates/rv/src/main.rs
@@ -23,6 +23,7 @@ use crate::commands::ruby::pin::pin as ruby_pin;
 use crate::commands::ruby::run::run as ruby_run;
 use crate::commands::ruby::uninstall::uninstall as ruby_uninstall;
 use crate::commands::ruby::{RubyArgs, RubyCommand};
+use crate::commands::selfupdate::selfupdate;
 use crate::commands::shell::completions::shell_completions;
 use crate::commands::shell::env::env as shell_env;
 use crate::commands::shell::init::init as shell_init;
@@ -129,6 +130,8 @@ enum Commands {
     Cache(CacheCommandArgs),
     #[command(about = "Configure your shell to use rv")]
     Shell(ShellArgs),
+    #[command(about = "Update rv itself, if an update is available")]
+    Selfupdate,
 }
 
 #[derive(Debug, Copy, Clone, clap::ValueEnum)]
@@ -296,6 +299,7 @@ async fn run() -> Result<()> {
                 CacheCommand::Clean => cache_clean(&config)?,
                 CacheCommand::Prune => cache_prune(&config)?,
             },
+            Commands::Selfupdate => selfupdate().await.unwrap(), // FIXME: don't unwrap
             Commands::Shell(shell) => match shell.command {
                 ShellCommand::Init { shell } => shell_init(&config, shell)?,
                 ShellCommand::Completions { shell } => {