diff --git a/pkgs/applications/version-management/gitlab/default.nix b/pkgs/applications/version-management/gitlab/default.nix
index a386d3e63221..20f0937274ed 100644
--- a/pkgs/applications/version-management/gitlab/default.nix
+++ b/pkgs/applications/version-management/gitlab/default.nix
@@ -76,6 +76,7 @@ stdenv.mkDerivation rec {
     # Work around unpacking deb containing binary with suid bit
     tar -f gitlab-deb-data.tar --delete ./opt/gitlab/embedded/bin/ksu
     tar -xf gitlab-deb-data.tar
+    rm gitlab-deb-data.tar
 
     mv -v opt/gitlab/embedded/service/gitlab-rails/public/assets public
     rm -rf opt # only directory in data.tar.gz