diff --git a/contrib/packager.io/functions b/contrib/packager.io/functions
index d4a0caaac..b9b3acd6c 100644
--- a/contrib/packager.io/functions
+++ b/contrib/packager.io/functions
@@ -299,6 +299,7 @@ function update_or_install () {
 }
 
 function set_env_vars () {
+  zammad config:set RUBY_MALLOC_ARENA_MAX=${ZAMMAD_RUBY_MALLOC_ARENA_MAX:=2}
   zammad config:set RUBY_GC_MALLOC_LIMIT=${ZAMMAD_RUBY_GC_MALLOC_LIMIT:=1077216}
   zammad config:set RUBY_GC_MALLOC_LIMIT_MAX=${ZAMMAD_RUBY_GC_MALLOC_LIMIT_MAX:=2177216}
   zammad config:set RUBY_GC_OLDMALLOC_LIMIT=${ZAMMAD_RUBY_GC_OLDMALLOC_LIMIT:=2177216}