diff --git a/scripts/python/release_label_validator.py b/scripts/python/release_label_validator.py
index ca0d95f8c..d25f3d2ac 100755
--- a/scripts/python/release_label_validator.py
+++ b/scripts/python/release_label_validator.py
@@ -27,7 +27,7 @@
 
 prs_since_last_release = [
     pr for pr in all_closed_prs
-    if pr['merged_at'] is not None and pr['merged_at'] > latest_release_date
+    if pr['base']['ref'] == 'main' and pr['merged_at'] is not None and pr['merged_at'] > latest_release_date
 ]
 
 valid_prs = []