diff --git a/roles/ams_sso/tasks/main.yml b/roles/ams_sso/tasks/main.yml
index 7a35478..bb22c5c 100644
--- a/roles/ams_sso/tasks/main.yml
+++ b/roles/ams_sso/tasks/main.yml
@@ -9,12 +9,16 @@
       var: ansible_fqdn
 ##prüfen ob die erforderliche Software installiert ist
   - name: ensure software krb5-workstation and krb5-libs are installed
+    become_user: root
+    become: yes
     yum: 
-      name: "{{ packages }}"
-    vars:
-      packages:
-      - krb5-workstation
-      - krb5-libs
+      name: 
+        - krb5-workstation
+        - krb5-libs
+      state: present
+      disable_gpg_check: yes
+        
+      
 ##muss noch geklärt werden ob erforderlich
 ##BitBW hat zudem Änderungen an dem File vorgenommen
 ##daher u.U. BitBW noch informieren