diff --git a/Cargo.lock b/Cargo.lock
index 963a317939..c8539327c6 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -501,9 +501,9 @@ dependencies = [
 
 [[package]]
 name = "aws-sdk-s3"
-version = "1.119.0"
+version = "1.120.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "1d65fddc3844f902dfe1864acb8494db5f9342015ee3ab7890270d36fbd2e01c"
+checksum = "06673901e961f20fa8d7da907da48f7ad6c1b383e3726c22bd418900f015abe1"
 dependencies = [
  "aws-credential-types",
  "aws-runtime",
@@ -513,6 +513,7 @@ dependencies = [
  "aws-smithy-eventstream",
  "aws-smithy-http",
  "aws-smithy-json",
+ "aws-smithy-observability",
  "aws-smithy-runtime",
  "aws-smithy-runtime-api",
  "aws-smithy-types",
@@ -593,9 +594,9 @@ dependencies = [
 
 [[package]]
 name = "aws-smithy-checksums"
-version = "0.63.12"
+version = "0.63.13"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "87294a084b43d649d967efe58aa1f9e0adc260e13a6938eb904c0ae9b45824ae"
+checksum = "23374b9170cbbcc6f5df8dc5ebb9b6c5c28a3c8f599f0e8b8b10eb6f4a5c6e74"
 dependencies = [
  "aws-smithy-http",
  "aws-smithy-types",
@@ -885,7 +886,7 @@ dependencies = [
  "bitflags",
  "cexpr",
  "clang-sys",
- "itertools 0.13.0",
+ "itertools 0.10.5",
  "log",
  "prettyplease",
  "proc-macro2",
@@ -1339,7 +1340,7 @@ version = "3.1.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "faf9468729b8cbcea668e36183cb69d317348c2e08e994829fb56ebfdfbaac34"
 dependencies = [
- "windows-sys 0.61.2",
+ "windows-sys 0.59.0",
 ]
 
 [[package]]
@@ -1555,15 +1556,14 @@ checksum = "19d374276b40fb8bbdee95aef7c7fa6b5316ec764510eb64b8dd0e2ed0d7e7f5"
 
 [[package]]
 name = "crc-fast"
-version = "1.6.0"
+version = "1.9.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "6ddc2d09feefeee8bd78101665bd8645637828fa9317f9f292496dbbd8c65ff3"
+checksum = "2fd92aca2c6001b1bf5ba0ff84ee74ec8501b52bbef0cac80bf25a6c1d87a83d"
 dependencies = [
  "crc",
  "digest",
- "rand 0.9.2",
- "regex",
  "rustversion",
+ "spin 0.10.0",
 ]
 
 [[package]]
@@ -2023,7 +2023,7 @@ dependencies = [
  "libc",
  "option-ext",
  "redox_users",
- "windows-sys 0.61.2",
+ "windows-sys 0.59.0",
 ]
 
 [[package]]
@@ -2259,7 +2259,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "39cab71617ae0d63f51a36d69f866391735b51691dbda63cf6f96d042b63efeb"
 dependencies = [
  "libc",
- "windows-sys 0.61.2",
+ "windows-sys 0.59.0",
 ]
 
 [[package]]
@@ -2342,13 +2342,14 @@ checksum = "28dea519a9695b9977216879a3ebfddf92f1c08c05d984f8996aecd6ecdc811d"
 
 [[package]]
 name = "filetime"
-version = "0.2.27"
+version = "0.2.26"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f98844151eee8917efc50bd9e8318cb963ae8b297431495d3f758616ea5c57db"
+checksum = "bc0505cd1b6fa6580283f6bdf70a73fcf4aba1184038c90902b92b3dd0df63ed"
 dependencies = [
  "cfg-if",
  "libc",
  "libredox",
+ "windows-sys 0.60.2",
 ]
 
 [[package]]
@@ -3691,8 +3692,6 @@ version = "0.15.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "9229cfe53dfd69f0609a49f65461bd93001ea1ef889cd5529dd176593f5338a1"
 dependencies = [
- "allocator-api2",
- "equivalent",
  "foldhash 0.1.5",
 ]
 
@@ -3970,7 +3969,7 @@ dependencies = [
  "libc",
  "percent-encoding",
  "pin-project-lite",
- "socket2 0.6.1",
+ "socket2 0.5.10",
  "system-configuration",
  "tokio",
  "tower-service",
@@ -4416,7 +4415,7 @@ dependencies = [
  "portable-atomic",
  "portable-atomic-util",
  "serde_core",
- "windows-sys 0.61.2",
+ "windows-sys 0.59.0",
 ]
 
 [[package]]
@@ -4525,7 +4524,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "642883fdc81cf2da15ee8183fa1d2c7da452414dd41541a0f3e1428069345447"
 dependencies = [
  "scopeguard",
- "windows-sys 0.61.2",
+ "windows-sys 0.59.0",
 ]
 
 [[package]]
@@ -4592,7 +4591,7 @@ version = "1.5.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "bbd2bcb4c963f2ddae06a2efc7e9f3591312473c50c6685e1f298068316e66fe"
 dependencies = [
- "spin",
+ "spin 0.9.8",
 ]
 
 [[package]]
@@ -4789,11 +4788,11 @@ dependencies = [
 
 [[package]]
 name = "lru"
-version = "0.12.5"
+version = "0.16.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "234cf4f4a04dc1f57e24b96cc0cd600cf2af460d4161ac5ecdd0af8e1f3b2a38"
+checksum = "a1dc47f592c06f33f8e3aea9591776ec7c9f9e4124778ff8a3c3b87159f7e593"
 dependencies = [
- "hashbrown 0.15.5",
+ "hashbrown 0.16.1",
 ]
 
 [[package]]
@@ -4842,14 +4841,20 @@ dependencies = [
 
 [[package]]
 name = "lzma-rust2"
-version = "0.15.7"
+version = "0.13.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "1670343e58806300d87950e3401e820b519b9384281bbabfb15e3636689ffd69"
+checksum = "c60a23ffb90d527e23192f1246b14746e2f7f071cb84476dd879071696c18a4a"
 dependencies = [
  "crc",
  "sha2",
 ]
 
+[[package]]
+name = "lzma-rust2"
+version = "0.15.7"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1670343e58806300d87950e3401e820b519b9384281bbabfb15e3636689ffd69"
+
 [[package]]
 name = "lzma-sys"
 version = "0.1.20"
@@ -5262,7 +5267,7 @@ version = "0.50.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "7957b9740744892f114936ab4a57b3f487491bbeafaf8083688b16841a4240e5"
 dependencies = [
- "windows-sys 0.61.2",
+ "windows-sys 0.59.0",
 ]
 
 [[package]]
@@ -5624,7 +5629,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "7d8fae84b431384b68627d0f9b3b1245fcf9f46f6c0e3dc902e9dce64edd1967"
 dependencies = [
  "libc",
- "windows-sys 0.61.2",
+ "windows-sys 0.45.0",
 ]
 
 [[package]]
@@ -6143,7 +6148,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "be769465445e8c1474e9c5dac2018218498557af32d9ed057325ec9a41ae81bf"
 dependencies = [
  "heck",
- "itertools 0.14.0",
+ "itertools 0.10.5",
  "log",
  "multimap",
  "once_cell",
@@ -6163,7 +6168,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "8a56d757972c98b346a9b766e3f02746cde6dd1cd1d1d563472929fdd74bec4d"
 dependencies = [
  "anyhow",
- "itertools 0.14.0",
+ "itertools 0.10.5",
  "proc-macro2",
  "quote",
  "syn 2.0.114",
@@ -6258,7 +6263,7 @@ dependencies = [
  "quinn-udp",
  "rustc-hash 2.1.1",
  "rustls 0.23.36",
- "socket2 0.6.1",
+ "socket2 0.5.10",
  "thiserror 2.0.18",
  "tokio",
  "tracing",
@@ -6296,9 +6301,9 @@ dependencies = [
  "cfg_aliases",
  "libc",
  "once_cell",
- "socket2 0.6.1",
+ "socket2 0.5.10",
  "tracing",
- "windows-sys 0.60.2",
+ "windows-sys 0.59.0",
 ]
 
 [[package]]
@@ -6545,8 +6550,6 @@ dependencies = [
  "rustls 0.23.36",
  "rustls-pki-types",
  "rustls-platform-verifier",
- "serde",
- "serde_json",
  "sync_wrapper",
  "tokio",
  "tokio-native-tls",
@@ -6787,7 +6790,7 @@ dependencies = [
  "errno 0.3.14",
  "libc",
  "linux-raw-sys",
- "windows-sys 0.61.2",
+ "windows-sys 0.59.0",
 ]
 
 [[package]]
@@ -6858,7 +6861,7 @@ dependencies = [
  "security-framework 3.5.1",
  "security-framework-sys",
  "webpki-root-certs",
- "windows-sys 0.61.2",
+ "windows-sys 0.59.0",
 ]
 
 [[package]]
@@ -7365,7 +7368,7 @@ checksum = "414256b6bb303a2a38ad800096664c3b332295c17b7ef0674bf0acf44284036c"
 dependencies = [
  "crc32fast",
  "js-sys",
- "lzma-rust2",
+ "lzma-rust2 0.15.7",
  "wasm-bindgen",
 ]
 
@@ -7482,7 +7485,7 @@ version = "1.4.8"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "c4db69cba1110affc0e9f7bcd48bbf87b3f4fc7c61fc9155afd4c469eb3d6c1b"
 dependencies = [
- "errno 0.3.14",
+ "errno 0.2.8",
  "libc",
 ]
 
@@ -7705,6 +7708,12 @@ version = "0.9.8"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "6980e8d7511241f8acf4aebddbb1ff938df5eebe98691418c4468d0b72a96a67"
 
+[[package]]
+name = "spin"
+version = "0.10.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d5fe4ccb98d9c292d56fec89a5e07da7fc4cf0dc11e156b41793132775d3e591"
+
 [[package]]
 name = "spki"
 version = "0.7.3"
@@ -7901,7 +7910,7 @@ dependencies = [
  "getrandom 0.3.4",
  "once_cell",
  "rustix",
- "windows-sys 0.61.2",
+ "windows-sys 0.59.0",
 ]
 
 [[package]]
@@ -8946,7 +8955,7 @@ version = "0.1.11"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "c2a7b1c03c876122aa43f3020e6c3c3ee5c05081c9a00739faf7503aeba10d22"
 dependencies = [
- "windows-sys 0.61.2",
+ "windows-sys 0.59.0",
 ]
 
 [[package]]
@@ -9531,9 +9540,9 @@ checksum = "66fee0b777b0f5ac1c69bb06d361268faafa61cd4682ae064a171c16c433e9e4"
 
 [[package]]
 name = "xx"
-version = "2.3.1"
+version = "2.3.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b2df0028c106b318c37108eaa6930ee85c73e0ad03e2d54dfe7fea44975c1259"
+checksum = "704f7d8fce796d9206ab2f0a04a0c59c54394105b838b236d6687e8eef721440"
 dependencies = [
  "bzip2 0.6.1",
  "duct 1.1.1",
@@ -9545,13 +9554,13 @@ dependencies = [
  "miette",
  "rand 0.9.2",
  "regex",
- "reqwest 0.13.1",
+ "reqwest 0.12.28",
  "sha2",
  "tar",
  "thiserror 2.0.18",
  "tokio",
  "xz2",
- "zip 7.1.0",
+ "zip 6.0.0",
 ]
 
 [[package]]
@@ -9732,21 +9741,21 @@ dependencies = [
 
 [[package]]
 name = "zip"
-version = "7.1.0"
+version = "6.0.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "9013f1222db8a6d680f13a7ccdc60a781199cd09c2fa4eff58e728bb181757fc"
+checksum = "eb2a05c7c36fde6c09b08576c9f7fb4cda705990f73b58fe011abf7dfb24168b"
 dependencies = [
  "aes",
+ "arbitrary",
  "bzip2 0.6.1",
  "constant_time_eq 0.3.1",
  "crc32fast",
  "deflate64",
  "flate2",
- "generic-array",
  "getrandom 0.3.4",
  "hmac",
  "indexmap 2.13.0",
- "lzma-rust2",
+ "lzma-rust2 0.13.0",
  "memchr",
  "pbkdf2",
  "ppmd-rust",
diff --git a/completions/mise.ps1 b/completions/mise.ps1
new file mode 100644
index 0000000000..325cc878b6
--- /dev/null
+++ b/completions/mise.ps1
@@ -0,0 +1,40 @@
+# @generated by usage-cli from usage spec
+
+if (-not (Get-Command 'usage' -ErrorAction SilentlyContinue)) {
+    Write-Warning "Error: usage CLI not found. This is required for completions to work in mise."
+    Write-Warning "See https://usage.jdx.dev for more information."
+    return
+}
+
+Register-ArgumentCompleter -Native -CommandName 'mise' -ScriptBlock {
+    param($wordToComplete, $commandAst, $cursorPosition)
+
+    $tmpDir = if ($env:TEMP) { $env:TEMP } else { [System.IO.Path]::GetTempPath() }
+    $specFile = Join-Path $tmpDir "usage__usage_spec_mise_2026_1_4.kdl"
+
+    if (-not (Test-Path $specFile)) {
+    mise usage | Out-File -FilePath $specFile -Encoding utf8
+}
+
+    $words = $commandAst.CommandElements | ForEach-Object { $_.ToString() }
+    if ($words.Count -lt 1) {
+        $words = @('mise')
+    }
+
+    $completions = & 'usage' complete-word --shell powershell -f "$specFile" -- @words $wordToComplete 2>$null
+
+    if ($completions) {
+        $completions | ForEach-Object {
+            $parts = $_ -split "`t", 2
+            $completion = $parts[0]
+            $description = if ($parts.Count -gt 1) { $parts[1] } else { '' }
+
+            [System.Management.Automation.CompletionResult]::new(
+                $completion,
+                $completion,
+                'ParameterValue',
+                $description
+            )
+        }
+    }
+}
diff --git a/docs/cli/completion.md b/docs/cli/completion.md
index eced21ccf1..12826aea01 100644
--- a/docs/cli/completion.md
+++ b/docs/cli/completion.md
@@ -16,6 +16,7 @@ Shell type to generate completions for
 
 - `bash`
 - `fish`
+- `powershell`
 - `zsh`
 
 ## Flags
@@ -33,4 +34,5 @@ Examples:
 mise completion bash --include-bash-completion-lib > ~/.local/share/bash-completion/completions/mise
 mise completion zsh  > /usr/local/share/zsh/site-functions/_mise
 mise completion fish > ~/.config/fish/completions/mise.fish
+mise completion powershell >> $PROFILE
 ```
diff --git a/docs/installing-mise.md b/docs/installing-mise.md
index 6652b30e04..568642d841 100644
--- a/docs/installing-mise.md
+++ b/docs/installing-mise.md
@@ -347,7 +347,7 @@ this is not necessary.
 See [`MISE_FISH_AUTO_ACTIVATE=1`](/configuration#mise-fish-auto-activate-1) for more information.
 :::
 
-### Powershell
+### PowerShell
 
 ::: warning
 See [about_Profiles](https://learn.microsoft.com/en-us/powershell/module/microsoft.powershell.core/about/about_profiles) docs to find your actual profile location.
diff --git a/docs/tasks/file-tasks.md b/docs/tasks/file-tasks.md
index 7cc4f2504c..3c667d2178 100644
--- a/docs/tasks/file-tasks.md
+++ b/docs/tasks/file-tasks.md
@@ -86,10 +86,10 @@ console.log(`PATH, ${Deno.env.get("PATH")}`);
 
 ```powershell [powershell]
 #!/usr/bin/env pwsh
-#MISE description="Hello, World in Powershell"
+#MISE description="Hello, World in PowerShell"
 
 $current_directory = Get-Location
-Write-Host "Hello from Powershell, current directory is $current_directory"
+Write-Host "Hello from PowerShell, current directory is $current_directory"
 ```
 
 :::
diff --git a/mise.usage.kdl b/mise.usage.kdl
index ec016356be..39d35f13e7 100644
--- a/mise.usage.kdl
+++ b/mise.usage.kdl
@@ -155,10 +155,10 @@ cmd cache help="Manage the mise cache" {
 }
 cmd completion help="Generate shell completions" {
     alias complete completions hide=#true
-    after_long_help "Examples:\n\n    $ mise completion bash --include-bash-completion-lib > ~/.local/share/bash-completion/completions/mise\n    $ mise completion zsh  > /usr/local/share/zsh/site-functions/_mise\n    $ mise completion fish > ~/.config/fish/completions/mise.fish\n"
+    after_long_help "Examples:\n\n    $ mise completion bash --include-bash-completion-lib > ~/.local/share/bash-completion/completions/mise\n    $ mise completion zsh  > /usr/local/share/zsh/site-functions/_mise\n    $ mise completion fish > ~/.config/fish/completions/mise.fish\n    $ mise completion powershell >> $PROFILE\n"
     flag "-s --shell" help="Shell type to generate completions for" hide=#true {
         arg <SHELL_TYPE> {
-            choices bash fish zsh
+            choices bash fish powershell zsh
         }
     }
     flag --include-bash-completion-lib help="Include the bash completion library in the bash completion script" {
@@ -168,7 +168,7 @@ cmd completion help="Generate shell completions" {
         long_help "Always use usage for completions.\nCurrently, usage is the default for fish and bash but not zsh since it has a few quirks\nto work out first.\n\nThis requires the `usage` CLI to be installed.\nhttps://usage.jdx.dev"
     }
     arg "[SHELL]" help="Shell type to generate completions for" required=#false {
-        choices bash fish zsh
+        choices bash fish powershell zsh
     }
 }
 cmd config help="Manage config files" {
diff --git a/src/backend/conda_macos.rs b/src/backend/conda_macos.rs
index 244a9be2f2..ed1436115a 100644
--- a/src/backend/conda_macos.rs
+++ b/src/backend/conda_macos.rs
@@ -98,12 +98,12 @@ fn find_paths_to_fix(deps: &str, lib_dir: &Path) -> Vec<(String, PathBuf)> {
         .skip(1) // Skip the first line (file path)
         .filter_map(|line| {
             let line = line.trim();
-            if let Some(old_path) = extract_build_path(line) {
-                if let Some(lib_name) = Path::new(&old_path).file_name() {
-                    let new_path = lib_dir.join(lib_name);
-                    if new_path.exists() {
-                        return Some((old_path, new_path));
-                    }
+            if let Some(old_path) = extract_build_path(line)
+                && let Some(lib_name) = Path::new(&old_path).file_name()
+            {
+                let new_path = lib_dir.join(lib_name);
+                if new_path.exists() {
+                    return Some((old_path, new_path));
                 }
             }
             None
@@ -117,13 +117,13 @@ fn verify_signature(path: &Path) {
         .args(["--verify", path.to_str().unwrap_or("")])
         .output();
 
-    if let Ok(output) = result {
-        if !output.status.success() {
-            debug!(
-                "Binary {} has invalid or missing signature, skipping signature verification",
-                path.display()
-            );
-        }
+    if let Ok(output) = result
+        && !output.status.success()
+    {
+        debug!(
+            "Binary {} has invalid or missing signature, skipping signature verification",
+            path.display()
+        );
     }
 }
 
diff --git a/src/cli/completion.rs b/src/cli/completion.rs
index b447013891..228e332125 100644
--- a/src/cli/completion.rs
+++ b/src/cli/completion.rs
@@ -78,6 +78,7 @@ impl Completion {
         match shell {
             Shell::Bash => include_str!("../../completions/mise.bash"),
             Shell::Fish => include_str!("../../completions/mise.fish"),
+            Shell::PowerShell => include_str!("../../completions/mise.ps1"),
             Shell::Zsh => include_str!("../../completions/_mise"),
         }
         .to_string()
@@ -90,20 +91,24 @@ static AFTER_LONG_HELP: &str = color_print::cstr!(
     $ <bold>mise completion bash --include-bash-completion-lib > ~/.local/share/bash-completion/completions/mise</bold>
     $ <bold>mise completion zsh  > /usr/local/share/zsh/site-functions/_mise</bold>
     $ <bold>mise completion fish > ~/.config/fish/completions/mise.fish</bold>
+    $ <bold>mise completion powershell >> $PROFILE</bold>
 "#
 );
 
 #[derive(Debug, Clone, Copy, EnumString, strum::Display)]
 #[strum(serialize_all = "snake_case")]
+#[allow(clippy::enum_variant_names)] // PowerShell is a proper noun
 enum Shell {
     Bash,
     Fish,
+    #[strum(serialize = "powershell")]
+    PowerShell,
     Zsh,
 }
 
 impl ValueEnum for Shell {
     fn value_variants<'a>() -> &'a [Self] {
-        &[Self::Bash, Self::Fish, Self::Zsh]
+        &[Self::Bash, Self::Fish, Self::PowerShell, Self::Zsh]
     }
     fn to_possible_value(&self) -> Option<PossibleValue> {
         Some(PossibleValue::new(self.to_string()))
diff --git a/src/cli/watch.rs b/src/cli/watch.rs
index 9a4f4151b3..07fa88e155 100644
--- a/src/cli/watch.rs
+++ b/src/cli/watch.rs
@@ -1177,12 +1177,13 @@ pub enum FsEvent {
 }
 
 #[derive(Clone, Copy, Debug, Eq, PartialEq, ValueEnum)]
+#[clap(rename_all = "lower")]
 pub enum ShellCompletion {
     Bash,
     Elvish,
     Fish,
     Nu,
-    Powershell,
+    PowerShell,
     Zsh,
 }
 
diff --git a/tasks.toml b/tasks.toml
index 8c4a6ee2b1..aece3523a2 100644
--- a/tasks.toml
+++ b/tasks.toml
@@ -91,6 +91,7 @@ set -xeuo pipefail
 mise completion bash > completions/mise.bash
 mise completion zsh > completions/_mise
 mise completion fish > completions/mise.fish
+mise completion powershell > completions/mise.ps1
 '''
 
 ["render:mangen"]
diff --git a/xtasks/fig/src/mise.ts b/xtasks/fig/src/mise.ts
index 1e2ed8799d..511d91d793 100644
--- a/xtasks/fig/src/mise.ts
+++ b/xtasks/fig/src/mise.ts
@@ -736,7 +736,7 @@ const completionSpec: Fig.Spec = {
         name: "shell",
         description: "Shell type to generate completions for",
         isOptional: true,
-        suggestions: ["bash", "fish", "zsh"],
+        suggestions: ["bash", "fish", "powershell", "zsh"],
       },
     },
     {