diff --git a/openjdk/excludes/ProblemList_openjdk21-openj9.txt b/openjdk/excludes/ProblemList_openjdk21-openj9.txt
index 6411c1ac93..33f2b743a4 100644
--- a/openjdk/excludes/ProblemList_openjdk21-openj9.txt
+++ b/openjdk/excludes/ProblemList_openjdk21-openj9.txt
@@ -127,6 +127,7 @@ jdk/internal/vm/Continuation/LiveFramesDriver.java https://github.com/eclipse-op
 jdk/internal/vm/Continuation/Scoped.java https://github.com/eclipse-openj9/openj9/issues/15163 generic-all
 jdk/modules/incubator/ImageModules.java https://github.com/adoptium/aqa-tests/issues/1267 macosx-all
 jni/nullCaller/NullCallerTest.java https://github.com/eclipse-openj9/openj9/issues/15370 linux-ppc64le,macosx-all
+java/lang/Thread/virtual/stress/Skynet.java#default https://github.com/eclipse-openj9/openj9/issues/16728 linux-ppc64le,aix-all
 
 ############################################################################
 
diff --git a/openjdk/excludes/ProblemList_openjdk22-openj9.txt b/openjdk/excludes/ProblemList_openjdk22-openj9.txt
index 7565b96048..b85b205bac 100644
--- a/openjdk/excludes/ProblemList_openjdk22-openj9.txt
+++ b/openjdk/excludes/ProblemList_openjdk22-openj9.txt
@@ -127,8 +127,8 @@ jdk/internal/vm/Continuation/LiveFramesDriver.java https://github.com/eclipse-op
 jdk/internal/vm/Continuation/Scoped.java https://github.com/eclipse-openj9/openj9/issues/15163 generic-all
 jdk/modules/incubator/ImageModules.java https://github.com/adoptium/aqa-tests/issues/1267 macosx-all
 jni/nullCaller/NullCallerTest.java https://github.com/eclipse-openj9/openj9/issues/15370 linux-ppc64le,macosx-all
-
 java/lang/Thread/jni/AttachCurrentThread/AttachTest.java#id1 https://github.com/eclipse-openj9/openj9/issues/17399 generic-all
+java/lang/Thread/virtual/stress/Skynet.java#default https://github.com/eclipse-openj9/openj9/issues/16728 linux-ppc64le,aix-all
 
 ############################################################################