diff --git a/packages/opencode/src/cli/cmd/upgrade.ts b/packages/opencode/src/cli/cmd/upgrade.ts
index 65f3bab4d46..4438fa3b84f 100644
--- a/packages/opencode/src/cli/cmd/upgrade.ts
+++ b/packages/opencode/src/cli/cmd/upgrade.ts
@@ -16,7 +16,7 @@ export const UpgradeCommand = {
         alias: "m",
         describe: "installation method to use",
         type: "string",
-        choices: ["curl", "npm", "pnpm", "bun", "brew"],
+        choices: ["curl", "npm", "pnpm", "bun", "brew", "choco", "scoop"],
       })
   },
   handler: async (args: { target?: string; method?: string }) => {
@@ -56,8 +56,14 @@ export const UpgradeCommand = {
     const err = await Installation.upgrade(method, target).catch((err) => err)
     if (err) {
       spinner.stop("Upgrade failed", 1)
-      if (err instanceof Installation.UpgradeFailedError) prompts.log.error(err.data.stderr)
-      else if (err instanceof Error) prompts.log.error(err.message)
+      if (err instanceof Installation.UpgradeFailedError) {
+        // necessary because choco only allows install/upgrade in elevated terminals
+        if (method === "choco" && err.data.stderr.includes("not running from an elevated command shell")) {
+          prompts.log.error("Please run the terminal as Administrator and try again")
+        } else {
+          prompts.log.error(err.data.stderr)
+        }
+      } else if (err instanceof Error) prompts.log.error(err.message)
       prompts.outro("Done")
       return
     }
diff --git a/packages/opencode/src/installation/index.ts b/packages/opencode/src/installation/index.ts
index 9e6dd2b9e92..dea312adb0c 100644
--- a/packages/opencode/src/installation/index.ts
+++ b/packages/opencode/src/installation/index.ts
@@ -83,6 +83,14 @@ export namespace Installation {
         name: "brew" as const,
         command: () => $`brew list --formula opencode`.throws(false).quiet().text(),
       },
+      {
+        name: "scoop" as const,
+        command: () => $`scoop list opencode`.throws(false).quiet().text(),
+      },
+      {
+        name: "choco" as const,
+        command: () => $`choco list --limit-output opencode`.throws(false).quiet().text(),
+      },
     ]
 
     checks.sort((a, b) => {
@@ -95,7 +103,9 @@ export namespace Installation {
 
     for (const check of checks) {
       const output = await check.command()
-      if (output.includes(check.name === "brew" ? "opencode" : "opencode-ai")) {
+      const installedName =
+        check.name === "brew" || check.name === "choco" || check.name === "scoop" ? "opencode" : "opencode-ai"
+      if (output.includes(installedName)) {
         return check.name
       }
     }
@@ -144,20 +154,28 @@ export namespace Installation {
         })
         break
       }
+      case "choco":
+        cmd = $`echo Y | choco upgrade opencode --version=${target}`
+        break
+      case "scoop":
+        cmd = $`scoop install extras/opencode@${target}`
+        break
       default:
         throw new Error(`Unknown method: ${method}`)
     }
     const result = await cmd.quiet().throws(false)
+    if (result.exitCode !== 0) {
+      const stderr = method === "choco" ? "not running from an elevated command shell" : result.stderr.toString("utf8")
+      throw new UpgradeFailedError({
+        stderr: stderr,
+      })
+    }
     log.info("upgraded", {
       method,
       target,
       stdout: result.stdout.toString(),
       stderr: result.stderr.toString(),
     })
-    if (result.exitCode !== 0)
-      throw new UpgradeFailedError({
-        stderr: result.stderr.toString("utf8"),
-      })
     await $`${process.execPath} --version`.nothrow().quiet().text()
   }
 
@@ -195,6 +213,29 @@ export namespace Installation {
         .then((data: any) => data.version)
     }
 
+    if (detectedMethod === "choco") {
+      return fetch(
+        "https://community.chocolatey.org/api/v2/Packages?$filter=Id%20eq%20%27opencode%27%20and%20IsLatestVersion&$select=Version",
+        { headers: { Accept: "application/json;odata=verbose" } },
+      )
+        .then((res) => {
+          if (!res.ok) throw new Error(res.statusText)
+          return res.json()
+        })
+        .then((data: any) => data.d.results[0].Version)
+    }
+
+    if (detectedMethod === "scoop") {
+      return fetch("https://raw.githubusercontent.com/ScoopInstaller/Extras/master/bucket/opencode.json", {
+        headers: { Accept: "application/json" },
+      })
+        .then((res) => {
+          if (!res.ok) throw new Error(res.statusText)
+          return res.json()
+        })
+        .then((data: any) => data.version)
+    }
+
     return fetch("https://api.github.com/repos/anomalyco/opencode/releases/latest")
       .then((res) => {
         if (!res.ok) throw new Error(res.statusText)