diff --git a/src/termio/Exec.zig b/src/termio/Exec.zig
index f54ac5e77..863a4a86f 100644
--- a/src/termio/Exec.zig
+++ b/src/termio/Exec.zig
@@ -800,7 +800,7 @@ const Subprocess = struct {
 
         // Build our args list
         const args = args: {
-            const cap = 6; // the most we'll use on macOS
+            const cap = 9; // the most we'll ever use
             var args = try std.ArrayList([]const u8).initCapacity(alloc, cap);
             defer args.deinit();