diff --git a/src/cac.ts b/src/cac.ts
index a0d66f5..1bf032a 100644
--- a/src/cac.ts
+++ b/src/cac.ts
@@ -15,6 +15,9 @@ const quotedProcessExecArgs = process.execArgv.map(quoteIfNeeded);
 
 const x = `${quotedExecPath} ${quotedProcessExecArgs.join(' ')} ${quotedProcessArgs[0]}`;
 
+// Regex to detect if an option takes a value (has <required> or [optional] parameters)
+const VALUE_OPTION_RE = /<[^>]+>|\[[^\]]+\]/;
+
 function quoteIfNeeded(path: string): string {
   return path.includes(' ') ? `'${path}'` : path;
 }
@@ -78,8 +81,12 @@ export default async function tab(
       const targetCommand = isRootCommand ? t : command;
       if (targetCommand) {
         const handler = commandCompletionConfig?.options?.[argName];
+
+        // Check if option takes a value (has <> or [] in rawName, or is marked as required)
+        const takesValue =
+          option.required || VALUE_OPTION_RE.test(option.rawName);
+
         if (handler) {
-          // Has custom handler → value option
           if (shortFlag) {
             targetCommand.option(
               argName,
@@ -90,8 +97,24 @@ export default async function tab(
           } else {
             targetCommand.option(argName, option.description || '', handler);
           }
+        } else if (takesValue) {
+          // Takes value but no custom handler = value option with no completions
+          if (shortFlag) {
+            targetCommand.option(
+              argName,
+              option.description || '',
+              async () => [], // Empty completions
+              shortFlag
+            );
+          } else {
+            targetCommand.option(
+              argName,
+              option.description || '',
+              async () => []
+            );
+          }
         } else {
-          // No custom handler → boolean flag
+          // No custom handler and doesn't take value = boolean flag
           if (shortFlag) {
             targetCommand.option(argName, option.description || '', shortFlag);
           } else {