diff --git a/index.ts b/index.ts
index 62f9b7a..a7e8b5d 100644
--- a/index.ts
+++ b/index.ts
@@ -8,6 +8,7 @@ import {
     getRunningWork,
     resolveWorkfilePath,
 } from "./lib/workfile.ts";
+import { openWorkfileForEdit } from "./lib/edit.ts";
 
 const config = await loadConfig();
 const WORKFILE_PATH = await resolveWorkfilePath({
@@ -66,6 +67,10 @@ async function run(command: string) {
         case "status":
             await summary(WORKFILE_PATH, config.summary);
             break;
+        case "edit":
+            openWorkfileForEdit(WORKFILE_PATH);
+            await summary(WORKFILE_PATH, config.summary);
+            break;
         default:
             panic(`Unknown command: ${command}`);
     }
diff --git a/lib/edit.ts b/lib/edit.ts
new file mode 100644
index 0000000..95e04b9
--- /dev/null
+++ b/lib/edit.ts
@@ -0,0 +1,7 @@
+import { execSync } from "node:child_process";
+
+export function openWorkfileForEdit(path: string): void {
+    const editor = process.env["EDITOR"] || "vim";
+    const command = `${editor} ${path}`;
+    execSync(command, { stdio: ["ignore", "inherit", "inherit"] });
+}