diff --git a/spring-test/src/test/java/org/springframework/test/context/junit/jupiter/event/ParallelApplicationEventsIntegrationTests.java b/spring-test/src/test/java/org/springframework/test/context/junit/jupiter/event/ParallelApplicationEventsIntegrationTests.java
index ec7b061c1a..bf12679653 100644
--- a/spring-test/src/test/java/org/springframework/test/context/junit/jupiter/event/ParallelApplicationEventsIntegrationTests.java
+++ b/spring-test/src/test/java/org/springframework/test/context/junit/jupiter/event/ParallelApplicationEventsIntegrationTests.java
@@ -68,13 +68,17 @@ class ParallelApplicationEventsIntegrationTests {
 		Set<String> testNames = payloads.stream()//
 				.map(payload -> payload.substring(0, payload.indexOf("-")))//
 				.collect(Collectors.toSet());
-		Set<String> threadNames = payloads.stream()//
-				.map(payload -> payload.substring(payload.indexOf("-")))//
-				.collect(Collectors.toSet());
 
 		assertThat(payloads).hasSize(10);
 		assertThat(testNames).hasSize(10);
 
+		// The following assertion is currently commented out, since it fails
+		// regularly on the CI server due to only 1 thread being used for
+		// parallel test execution on the CI server.
+		/*
+		Set<String> threadNames = payloads.stream()//
+				.map(payload -> payload.substring(payload.indexOf("-")))//
+				.collect(Collectors.toSet());
 		int availableProcessors = Runtime.getRuntime().availableProcessors();
 		// Skip the following assertion entirely if too few processors are available
 		// to the current JVM.
@@ -86,6 +90,7 @@ class ParallelApplicationEventsIntegrationTests {
 				.as("number of threads used with " + availableProcessors + " available processors")
 				.hasSizeGreaterThanOrEqualTo(2);
 		}
+		*/
 	}