diff --git a/kubernetes/src/main/java/com/linecorp/armeria/client/kubernetes/KubernetesBlockHoundIntegration.java b/kubernetes/src/main/java/com/linecorp/armeria/client/kubernetes/KubernetesBlockHoundIntegration.java
index 04e8f2d3c56..a4153cf3c59 100644
--- a/kubernetes/src/main/java/com/linecorp/armeria/client/kubernetes/KubernetesBlockHoundIntegration.java
+++ b/kubernetes/src/main/java/com/linecorp/armeria/client/kubernetes/KubernetesBlockHoundIntegration.java
@@ -32,12 +32,5 @@ public void applyTo(Builder builder) {
         // a fully readable ByteBuffer.
         builder.allowBlockingCallsInside(
                 "io.fabric8.kubernetes.client.http.HttpClientReadableByteChannel", "doLockedAndSignal");
-        // StandardHttpRequest creates UUIDs using java.util.UUID.randomUUID() that uses SecureRandom.
-        // The method is temporarily allowed until the problem is resolved in the upstream.
-        // See: https://github.com/fabric8io/kubernetes-client/issues/5735
-        // TODO(ikhoon): Remove this once the issue is fixed.
-        builder.allowBlockingCallsInside(
-                "io.fabric8.kubernetes.client.http.StandardHttpRequest$Builder",
-                "build");
     }
 }
diff --git a/testing-internal/src/main/java/com/linecorp/armeria/internal/testing/InternalTestingBlockHoundIntegration.java b/testing-internal/src/main/java/com/linecorp/armeria/internal/testing/InternalTestingBlockHoundIntegration.java
index 3d62508a2b6..9fc2d90b760 100644
--- a/testing-internal/src/main/java/com/linecorp/armeria/internal/testing/InternalTestingBlockHoundIntegration.java
+++ b/testing-internal/src/main/java/com/linecorp/armeria/internal/testing/InternalTestingBlockHoundIntegration.java
@@ -52,6 +52,8 @@ public void write(int b) throws IOException {
 
     @Override
     public void applyTo(Builder builder) {
+        builder.nonBlockingThreadPredicate(predicate -> predicate.and(
+                thread -> !thread.getName().startsWith("vert.x-internal-blocking")));
 
         // tests are allowed to block event loops
         builder.allowBlockingCallsInside("com.linecorp.armeria.internal.testing.BlockingUtils",
@@ -76,6 +78,12 @@ public void applyTo(Builder builder) {
         builder.allowBlockingCallsInside("com.linecorp.armeria.client.ClientFactory", "ofDefault");
         builder.allowBlockingCallsInside("io.envoyproxy.controlplane.cache.SimpleCache", "createWatch");
         builder.allowBlockingCallsInside("io.grpc.netty.shaded.io.netty.util.Version", "identify");
+        builder.allowBlockingCallsInside(
+                "io.fabric8.kubernetes.client.server.mock.WatchEventsListener", "onClosed");
+        builder.allowBlockingCallsInside(
+                "io.fabric8.kubernetes.client.server.mock.WatchEventsListener", "onFailure");
+        builder.allowBlockingCallsInside("io.fabric8.mockwebserver.internal.WebSocketSession", "onOpen");
+        builder.allowBlockingCallsInside("io.vertx.core.spi.tls.DefaultSslContextFactory", "createContext");
 
         // prints the exception which makes it easier to debug issues
         builder.blockingMethodCallback(this::writeBlockingMethod);