diff --git a/input/grid5000/sites/luxembourg/clusters/vianden/nodes/vianden-1.yaml b/input/grid5000/sites/luxembourg/clusters/vianden/nodes/vianden-1.yaml
index 263bdd979efa6b86a8f2c4d48dc048be35e9154f..068bd9eb680016a8eea265bea49234dace537bcb 100644
--- a/input/grid5000/sites/luxembourg/clusters/vianden/nodes/vianden-1.yaml
+++ b/input/grid5000/sites/luxembourg/clusters/vianden/nodes/vianden-1.yaml
@@ -225,7 +225,7 @@ vianden-1:
     cache_l3: 110100480
     ht_capable: true
     instruction_set: x86-64
-    microcode: '0x2b000603'
+    microcode: '0x2b000620'
     model: Intel Xeon
     other_description: Intel(R) Xeon(R) Platinum 8470
     vendor: Intel