diff --git a/data/registers/timer_v1.yaml b/data/registers/timer_v1.yaml
index 7df0f79..595175f 100644
--- a/data/registers/timer_v1.yaml
+++ b/data/registers/timer_v1.yaml
@@ -1000,6 +1000,9 @@ enum/TS:
     - name: ITR2
       description: Internal Trigger 2 (ITR2)
       value: 2
+    - name: ITR3
+      description: Internal Trigger 3 (ITR3)
+      value: 3
     - name: TI1F_ED
       description: TI1 Edge Detector (TI1F_ED)
       value: 4