diff --git a/Tests/Data/Mechanics/HoekBrown/load_test_hb_nonassociated.prj b/Tests/Data/Mechanics/HoekBrown/load_test_hb_nonassociated.prj
index 63991236ba9..431012498fb 100644
--- a/Tests/Data/Mechanics/HoekBrown/load_test_hb_nonassociated.prj
+++ b/Tests/Data/Mechanics/HoekBrown/load_test_hb_nonassociated.prj
@@ -299,7 +299,7 @@
         <vtkdiff>
             <regex>load_test_hb_ts_.*_t_.*.vtu</regex>
             <field>EquivalentPlasticStrain</field>
-            <absolute_tolerance>5e-9</absolute_tolerance>
+            <absolute_tolerance>6e-9</absolute_tolerance>
             <relative_tolerance>0</relative_tolerance>
         </vtkdiff>
     </test_definition>