diff --git a/runners/flink/job-server/flink_job_server.gradle b/runners/flink/job-server/flink_job_server.gradle
index 2e141b012ecd..4a4d5ff186bd 100644
--- a/runners/flink/job-server/flink_job_server.gradle
+++ b/runners/flink/job-server/flink_job_server.gradle
@@ -193,6 +193,10 @@ def portableValidatesRunnerTask(String name, Boolean streaming, Boolean checkpoi
       excludeTestsMatching 'org.apache.beam.sdk.testing.TestStreamTest.testLateDataAccumulating'
       // https://issues.apache.org/jira/browse/BEAM-12048
       excludeTestsMatching 'org.apache.beam.sdk.testing.TestStreamTest.testMultipleStreams'
+      // https://issues.apache.org/jira/browse/BEAM-12050
+      excludeTestsMatching 'org.apache.beam.sdk.transforms.ParDoTest$TimerTests.testEventTimeTimerUnbounded'
+      excludeTestsMatching 'org.apache.beam.sdk.transforms.ParDoTest$TimerTests.testEventTimeTimerAlignUnbounded'
+      excludeTestsMatching 'org.apache.beam.sdk.transforms.ParDoTest$TimerTests.testEventTimeTimerAlignAfterGcTimeUnbounded'
     },
   )
 }