diff --git a/src/index.mjs b/src/index.mjs
index b3a1297..fcc4f18 100644
--- a/src/index.mjs
+++ b/src/index.mjs
@@ -23,6 +23,7 @@ async function ghActionBot() {
     COMMENT_BODY_REGEXP_FLAGS,
     COMMENT_ACTOR,
     PULL_LABEL_FILTER,
+    PULL_LABEL_EXCLUDE,
     PULL_AUTHOR_FILTER,
     PULL_RETEST_BODY,
     ACTION_RETRY_DELAY = 3000,
@@ -71,6 +72,17 @@ async function ghActionBot() {
         return false;
       }
 
+      // filter out matching exclusion tags
+      if (PULL_LABEL_EXCLUDE) {
+        const exclude = PULL_LABEL_EXCLUDE.split(',').some(label => pull.labels.includes(label));
+        if (exclude) {
+          logger.debug(
+            `SKIP PULL #${pull.number}: label matches exclusion labels '${PULL_LABEL_EXCLUDE}'`
+          );
+          return false;
+        }
+      }
+
       return { comment, pull };
     })
   )).filter(Boolean);