diff --git a/pkgs/by-name/im/imapgoose/package.nix b/pkgs/by-name/im/imapgoose/package.nix
index 03546cd0e154..75eb104646aa 100644
--- a/pkgs/by-name/im/imapgoose/package.nix
+++ b/pkgs/by-name/im/imapgoose/package.nix
@@ -27,6 +27,8 @@ buildGoModule rec {
   postInstall = ''
     installManPage imapgoose.1
     installManPage imapgoose.conf.5
+
+    installShellCompletion --zsh contrib/_imapgoose
   '';
 
   meta = {